Bigger turbo than K04 recommendation ?

[uzone02]

After years of technology innovation.

Traditional big turbo i.e. GT28RS, GT2871...etc is reliable and with lots of data / log supporting.

How about Twin scroll ?

I know it has been install by few of AZs,

For the money and performance balance,

Any room for discussion?

ps: Currently running K04 with Unitronic stg2+

Cheers


Sent from my iPhone using Tapatalk

[Seerlah]

Unless adding forged rods, you are basically block limited due to precautionary limits at roughly 300whp. So, your choices are rather limited unless you like taking chances.

[uzone02]

Unless adding forged rods, you are basically block limited due to precautionary limits at roughly 300whp. So, your choices are rather limited unless you like tasking chances.

How about
BW K04 + forged rods
Or
GT2xxx? + stock rods

?


Sent from my iPhone using Tapatalk

[CyberPMG]

Keeping the block alone, I've been running the GT2871R Eliminator for many years and lots of miles. Got 100k miles on the turbo until the shaft started to have some play and make noise (not the normal noise when under boost). Had a Unitronic tune, but changed over to Motoza for a more custom tune that has brought out better power delivery with less boost (less stress on turbo and engine). With the Unitronic tune, I was getting 265 whp. Have not done any dyno tests with the Motoza tune. Unitronic no longer supports big turbos on our 1.8T engines. Excellent customer service with Motoza! Highly recommend them.

If you're going to upgrade the block (rods and pistons), then anything is possible if you have the cash.

[uzone02]

Keeping the block alone, I've been running the GT2871R Eliminator for many years and lots of miles. Got 100k miles on the turbo until the shaft started to have some play and make noise (not the normal noise when under boost). Had a Unitronic tune, but changed over to Motoza for a more custom tune that has brought out better power delivery with less boost (less stress on turbo and engine). With the Unitronic tune, I was getting 265 whp. Have not done any dyno tests with the Motoza tune. Unitronic no longer supports big turbos on our 1.8T engines. Excellent customer service with Motoza! Highly recommend them.

If you're going to upgrade the block (rods and pistons), then anything is possible if you have the cash.

Btw I just saw u got the big turbo GT2781(?) kit from here :p

Happy with it ?


Sent from my iPhone using Tapatalk

[Seerlah]

How about
BW K04 + forged rods
Or
GT2xxx? + stock rods

?


Sent from my iPhone using Tapatalk

I'm not really understanding your question. What you are looking for has already been answered. Many people on here have bigger turbo setups, including myself. This is a rather old platform, and many things have been done to it already. Use the search function to decide what route you want to take.

[itsmatt33]

if you will install rods then gt2871r
if you will not rods then gtrs

/thread

[Fast4esT]

Keeping the block alone, I've been running the GT2871R Eliminator for many years and lots of miles. Got 100k miles on the turbo until the shaft started to have some play and make noise (not the normal noise when under boost). Had a Unitronic tune, but changed over to Motoza for a more custom tune that has brought out better power delivery with less boost (less stress on turbo and engine). With the Unitronic tune, I was getting 265 whp. Have not done any dyno tests with the Motoza tune. Unitronic no longer supports big turbos on our 1.8T engines. Excellent customer service with Motoza! Highly recommend them.

If you're going to upgrade the block (rods and pistons), then anything is possible if you have the cash.

how much improvement did you find after switching to Motoza? Any more power or drivability under 3000 rpm? I have the same turbo and unitronic 630cc file running 24psi and its boring

[CyberPMG]

how much improvement did you find after switching to Motoza? Any more power or drivability under 3000 rpm? I have the same turbo and unitronic 630cc file running 24psi and its boring

Much more available power under the curve... and tuned at lower boost. Using 550cc Bosch injectors and only hitting 21-22 PSI. Used to hit 25-27 psi with Unitronic, but power was weak in the lower RPM range. The Motoza tune starts with a basic safe tune, and they will work on customizing it to get the most out of your car's unique setup through a series of data logging and flash uploads.

[CyberPMG]

Btw I just saw u got the big turbo GT2781(?) kit from here :p

Happy with it ?


Sent from my iPhone using Tapatalk

Turbo is fine and running strong!

[Fast4esT]

Mine feels the same, dead dog before boosts comes on, it's never consistent under boost either. Sometimes it feels fast and other times it feels lethargic. Then randomly while just cruising 55 and hit gas or downshift and hit gas it'll peak at 15psi and no higher for a while. Really hate unitronic. I won't even feel bad for having a new tune flashed over it

[CyberPMG]

Dave and the crew at Motoza are top notch. Unitronic won't support what you have anymore. With Motoza, you'll end up with a tune that is custom made for your car to get the best out of what you have. You may have to go through a few flashes and data logs to get there, but it's worth it.

[uzone02]

Yea I'm going to Motoza also,

After reading millions of thread these weeks

For the money and performance balance

I think I would go for a GT28RS

Mainly becoz the forged internal will cost a lot


Sent from my iPhone using Tapatalk

[uzone02]

Turbo is fine and running strong!

What other mod you did to it ?


Sent from my iPhone using Tapatalk

[CyberPMG]

What other mod you did to it ?


Sent from my iPhone using Tapatalk

First, the engine is a stock 1.8T AMB block and head. Was purchased as remanufactured by Audi when my original motor blew at 237k miles. With the new engine, I sent the transmission out to a specialist in Texas to have it rebuilt. They cryo treated the gears for added strength. They also added shims to the center differential from the original 2:1 ratio to 4:1 ratio to make the power distribution more like the RS4 (40/60).

Here's the whole mod setup...

GT2871R Eliminator turbo
Bosch 550cc injectors
Motoza tuning
Bosch 440 drop in fuel pump
034 braided fuel line from fuel filter to engine
034 billet aluminum fuel rail
Fluidampr pulley
OEM Audi BEX exhaust manifold (had it ceramic coated)
034 HFC
APR 2.5" downpipe
Magnaflow 16601 exhaust
Evolution Racewerks Comp FMIC
ECS Tuning RA4 Stage 2 clutch w/ steel flywheel
JHM short shift and solid linkage
Samco Sport diverter valve
2.0 TFSI ignition coils
NGK BKR7E-IX spark plugs
Bilstein PSS9 coilovers
Stoptech 332mm BBK (slotted)
ECS Tuning B6 S4 rear brake kit w/ 2 piece slotted rotors

Probably some other small items I'm forgetting too (not to mention cosmetic mods)

[texasboy21]

First, the engine is a stock 1.8T AMB block and head. Was purchased as remanufactured by Audi when my original motor blew at 237k miles. With the new engine, I sent the transmission out to a specialist in Texas to have it rebuilt. They cryo treated the gears for added strength. They also added shims to the center differential from the original 2:1 ratio to 4:1 ratio to make the power distribution more like the RS4 (40/60).

Here's the whole mod setup...

GT2871R Eliminator turbo
Bosch 550cc injectors
Motoza tuning
Bosch 440 drop in fuel pump
034 braided fuel line from fuel filter to engine
034 billet aluminum fuel rail
Fluidampr pulley
OEM Audi BEX exhaust manifold (had it ceramic coated)
034 HFC
APR 2.5" downpipe
Magnaflow 16601 exhaust
Evolution Racewerks Comp FMIC
ECS Tuning RA4 Stage 2 clutch w/ steel flywheel
JHM short shift and solid linkage
Samco Sport diverter valve
2.0 TFSI ignition coils
NGK BKR7E-IX spark plugs
Bilstein PSS9 coilovers
Stoptech 332mm BBK (slotted)
ECS Tuning B6 S4 rear brake kit w/ 2 piece slotted rotors

Probably some other small items I'm forgetting too (not to mention cosmetic mods)

Thats a sold mod list, and very close to what I want move to when my K03 decides to go (IF I cannot get my hands on an MTM tune).

Have you ever had the car dyno'd? I like to see the graph.

[uzone02]

First, the engine is a stock 1.8T AMB block and head. Was purchased as remanufactured by Audi when my original motor blew at 237k miles. With the new engine, I sent the transmission out to a specialist in Texas to have it rebuilt. They cryo treated the gears for added strength. They also added shims to the center differential from the original 2:1 ratio to 4:1 ratio to make the power distribution more like the RS4 (40/60).

Here's the whole mod setup...

GT2871R Eliminator turbo
Bosch 550cc injectors
Motoza tuning
Bosch 440 drop in fuel pump
034 braided fuel line from fuel filter to engine
034 billet aluminum fuel rail
Fluidampr pulley
OEM Audi BEX exhaust manifold (had it ceramic coated)
034 HFC
APR 2.5" downpipe
Magnaflow 16601 exhaust
Evolution Racewerks Comp FMIC
ECS Tuning RA4 Stage 2 clutch w/ steel flywheel
JHM short shift and solid linkage
Samco Sport diverter valve
2.0 TFSI ignition coils
NGK BKR7E-IX spark plugs
Bilstein PSS9 coilovers
Stoptech 332mm BBK (slotted)
ECS Tuning B6 S4 rear brake kit w/ 2 piece slotted rotors

Probably some other small items I'm forgetting too (not to mention cosmetic mods)

You are B5 ?

If B6 change to AMB head,

Anything has to change at the same time ?

BEX exhaust mani fit GT2781r ?


Sent from my iPhone using Tapatalk

[CyberPMG]

You are B5 ?

If B6 change to AMB head,

Anything has to change at the same time ?

BEX exhaust mani fit GT2781r ?


Sent from my iPhone using Tapatalk

AMB is the B6 1.8T engine code for the US. My car is a 2004 A4 1.8T Ultrasport. Among the early builds - was built in early September 2013 and delivered to the first owner in November of 2013.

The BEX manifold is equivalent to the standard OEM manifold, but is slightly larger in volume with thicker walls to support the BEX motor (the S-Line version offered in Europe with a factory tune of 190 bhp).

My turbo isn't a straight GR2871R. It's the Eliminator series, so it has a KKK back end as used in the K03/K04 which allows you to use the stock manifold. Details: Clicky click

[itsmatt33]

AMB is the B6 1.8T engine code for the US. My car is a 2004 A4 1.8T Ultrasport. Among the early builds - was built in early September 2013 and delivered to the first owner in November of 2013.

The BEX manifold is equivalent to the standard OEM manifold, but is slightly larger in volume with thicker walls to support the BEX motor (the S-Line version offered in Europe with a factory tune of 190 bhp).

My turbo isn't a straight GR2871R. It's the Eliminator series, so it has a KKK back end as used in the K03/K04 which allows you to use the stock manifold. Details: Clicky click

I would swap that manifold out. that is your setup's limiting factor.

[texasboy21]

I would swap that manifold out. that is your setup's limiting factor.

Stock manifold will allow for quicker response and spool. Larger runners will push the powerband further to the right where the turbine housing and manifold flange begin to become inefficient.

[Matt Devo]

They also added shims to the center differential from the original 2:1 ratio to 4:1 ratio to make the power distribution more like the RS4 (40/60).

just to clarify, the shimming on the 01E/01A/02X center differentials only changes the torque bias ratio from 2:1 to 4:1, which means it can send up to 80% of the power to either the front or rear, compared to 66% stock. It's doesn't change the normal/unloaded biasing from 50:50, unlike the RS4 and newer diffs that are rear-biased.

[CyberPMG]

just to clarify, the shimming on the 01E/01A/02X center differentials only changes the torque bias ratio from 2:1 to 4:1, which means it can send up to 80% of the power to either the front or rear, compared to 66% stock. It's doesn't change the normal/unloaded biasing from 50:50, unlike the RS4 and newerer diffs that are rear-biased.

Thanks for the clarification. At lease having more power to either front or rear is good in the winter!

[CyberPMG]

I would swap that manifold out. that is your setup's limiting factor.

Along with what texasboy21 has said, I used to go with a high flow exhaust manifold, but those kept warping and cracking on me. Have not been impressed by any KKK based high flow manifold. The next best thing was to go with the BEX manifold. It does respond and spool faster as it takes less time to fill the volume of the manifold to get the wheel moving.

If I was to go with a bigger manifold, I would then go for a straight GT2871R and not the Eliminator... and then upgrade the rods and pistons to handle the higher power. The Eliminator takes the power safely and reliably up to what a stock block can handle.

[texasboy21]

"Elminiator" means it elmininates the need for a manifold.

[itsmatt33]

Along with what texasboy21 has said, I used to go with a high flow exhaust manifold, but those kept warping and cracking on me. Have not been impressed by any KKK based high flow manifold. The next best thing was to go with the BEX manifold. It does respond and spool faster as it takes less time to fill the volume of the manifold to get the wheel moving.

If I was to go with a bigger manifold, I would then go for a straight GT2871R and not the Eliminator... and then upgrade the rods and pistons to handle the higher power. The Eliminator takes the power safely and reliably up to what a stock block can handle.

i validate all that, because i went through it twice. on GTRS and GT2871r. Best thing you can do is get an APR manifold. you can still run an eliminator and it's inconel so it'll never crack. They are hard to find but they are there. Ask me how I know.

[Matt Devo]

you can still run an eliminator and it's inconel so it'll never crack. They are hard to find but they are there. Ask me how I know.

the only way that would be possible would be with a T25->3-bolt adapter, which would be pretty pointless. If you've managed to acquire an APR manifold, might as well replace the exhaust housing with a T25 one and use it like it was designed

[itsmatt33]

the only way that would be possible would be with a T25->3-bolt adapter, which would be pretty pointless. If you've managed to acquire an APR manifold, might as well replace the exhaust housing with a T25 one and use it like it was designed

also exactly what i did. new exhaust housing from atp was only about 300 bucks if i remember correctly

[sleepwalker_gsr]

First, the engine is a stock 1.8T AMB block and head. Was purchased as remanufactured by Audi when my original motor blew at 237k miles. With the new engine, I sent the transmission out to a specialist in Texas to have it rebuilt. They cryo treated the gears for added strength. They also added shims to the center differential from the original 2:1 ratio to 4:1 ratio to make the power distribution more like the RS4 (40/60).

Here's the whole mod setup...

GT2871R Eliminator turbo
Bosch 550cc injectors
Motoza tuning
Bosch 440 drop in fuel pump
034 braided fuel line from fuel filter to engine
034 billet aluminum fuel rail
Fluidampr pulley
OEM Audi BEX exhaust manifold (had it ceramic coated)
034 HFC
APR 2.5" downpipe
Magnaflow 16601 exhaust
Evolution Racewerks Comp FMIC
ECS Tuning RA4 Stage 2 clutch w/ steel flywheel
JHM short shift and solid linkage
Samco Sport diverter valve
2.0 TFSI ignition coils
NGK BKR7E-IX spark plugs
Bilstein PSS9 coilovers
Stoptech 332mm BBK (slotted)
ECS Tuning B6 S4 rear brake kit w/ 2 piece slotted rotors

Probably some other small items I'm forgetting too (not to mention cosmetic mods)

Do you get a lot of clutch chatter? I do with mine. Mainly when idle and when I turn off the car. Normal?

[Fast4esT]

also exactly what i did. new exhaust housing from atp was only about 300 bucks if i remember correctly

This sounds like a good idea, I've been curious about getting a full frame exhaust housing on my 2871. Is that all it takes is a housing? Aside from the manifold. I was told a couple years ago it's not worth it to go full frame 2871 from the elim. I never understood why

[uzone02]

Along with what texasboy21 has said, I used to go with a high flow exhaust manifold, but those kept warping and cracking on me. Have not been impressed by any KKK based high flow manifold. The next best thing was to go with the BEX manifold. It does respond and spool faster as it takes less time to fill the volume of the manifold to get the wheel moving.

If I was to go with a bigger manifold, I would then go for a straight GT2871R and not the Eliminator... and then upgrade the rods and pistons to handle the higher power. The Eliminator takes the power safely and reliably up to what a stock block can handle.

So I can keep my engine block stock with the GT2871R Eliminator ?

[CyberPMG]

So I can keep my engine block stock with the GT2871R Eliminator ?

Yes. Get the ATP turbo kit and then go with Motoza for injectors and tune. This combo works! My car now has 359k miles. Granted I’m on my second engine (died at 237k miles), but have been using this Turbo on a stock block for over 120k miles.

[uzone02]

Yes. Get the ATP turbo kit and then go with Motoza for injectors and tune. This combo works! My car now has 359k miles. Granted I’m on my second engine (died at 237k miles), but have been using this Turbo on a stock block for over 120k miles.

http://www.atpturbo.com/mm5/merchant...ory_Code=VVWTK

This one ?

[CyberPMG]

http://www.atpturbo.com/mm5/merchant...ory_Code=VVWTK

This one ?

Yes. That one.

[itsmatt33]

This sounds like a good idea, I've been curious about getting a full frame exhaust housing on my 2871. Is that all it takes is a housing? Aside from the manifold. I was told a couple years ago it's not worth it to go full frame 2871 from the elim. I never understood why

APR manifold still takes a eliminator turbo. it is just more reliable and breathe better than stock or ATP.

If you wanted to run full frame youll need a new inlet and exhaust housing for your turbo I believe. I would probably go with a full race manifold.

[itsmatt33]

So I can keep my engine block stock with the GT2871R Eliminator ?

as I mentioned before running a gt2871r is risky on a stock block. Rods:

https://www.performancebyie.com/inte...n-rods-vw-audi

If you do not plan on installing rods then you should go with a GTRS:

http://www.atpturbo.com/mm5/merchant...de=ATP-VVW-151

If you plan on getting rods then go with the GT2871r:

http://www.atpturbo.com/mm5/merchant...ory_Code=VVWTK

Personally I would go with a GTX turbo. Same turbo but with a billet wheel = faster spool. you can go with gtx 2867r or gtx2871r. either way an open of the box tune will not max out either turbo.

I personally enjoy Revo and they have been around longer than motoza. Check out my build in my signature below.

[texasboy21]

APR manifold still takes a eliminator turbo. it is just more reliable and breathe better than stock or ATP.

If you wanted to run full frame youll need a new inlet and exhaust housing for your turbo I believe. I would probably go with a full race manifold.

The APR manifold is not the OEM KKK flange.

http://www.goapr.co.uk/products/about_b6a4s3.html

[itsmatt33]

The APR manifold is not the OEM KKK flange.

http://www.goapr.co.uk/products/about_b6a4s3.html

I am not really sure what you mean by OEM kkk flange. The apr manifold CAN run an eliminator style turbo. my GTX turbo is 2 bolt inlet 3 bolt outlet with a 5 bolt and t25 exhaust housing. I am literally running an eliminator turbo on an APR manifold so.....


If what you mean is that is does not have the 3 bolt to the exhaust manifold like OEM turbos, that is correct but like i mentioned before you can get a different exhaust housing from ATP for a t25 mate to the APR manifold

[texasboy21]

I am not really sure what you mean by OEM kkk flange. The apr manifold CAN run an eliminator style turbo. my GTX turbo is 2 bolt inlet 3 bolt outlet with a 5 bolt and t25 exhaust housing. I am literally running an eliminator turbo on an APR manifold so.....


If what you mean is that is does not have the 3 bolt to the exhaust manifold like OEM turbos, that is correct but like i mentioned before you can get a different exhaust housing from ATP for a t25 mate to the APR manifold

I gotcha, you did swap the turbine housing so its a bit misleading. By that logic, and turbo can fit on any manifold (which they can) as long as you swap the housings.

[uzone02]

as I mentioned before running a gt2871r is risky on a stock block. Rods:

https://www.performancebyie.com/inte...n-rods-vw-audi

If you do not plan on installing rods then you should go with a GTRS:

http://www.atpturbo.com/mm5/merchant...de=ATP-VVW-151

If you plan on getting rods then go with the GT2871r:

http://www.atpturbo.com/mm5/merchant...ory_Code=VVWTK

Personally I would go with a GTX turbo. Same turbo but with a billet wheel = faster spool. you can go with gtx 2867r or gtx2871r. either way an open of the box tune will not max out either turbo.

I personally enjoy Revo and they have been around longer than motoza. Check out my build in my signature below.

The price of the rods is down to $4xx , quite affordable to me, I thought its still around $8xx-1000

How about the intake & head block if I go with the GT2871R / GTX2867R ?

GTX2867R this link ? http://www.atpturbo.com/mm5/merchant...egory_Code=VHS

Is the 3" cat in this kit should be customised to the GT/X turbo ?

AEB head = B5 A4 right?

[itsmatt33]

The price of the rods is down to $4xx , quite affordable to me, I thought its still around $8xx-1000

How about the intake & head block if I go with the GT2871R / GTX2867R ?

GTX2867R this link ? http://www.atpturbo.com/mm5/merchant...egory_Code=VHS

Is the 3" cat in this kit should be customised to the GT/X turbo ?

AEB head = B5 A4 right?

yea rods are not too expensive and best to be safe. You dont need to build head or intake for these turbos only change the rods.

I used to have the gt2871r and changed it for gtx2867r. Spool is supposed to be faster with the GTX billet wheel.