Using 2.0T coil packs on the 1.8T

[walky_talky20]

This has been quite a popular topic on the B6 A4 forums here and with the VW 1.8T guys. Just wanted to make sure the B5'ers weren't left out.

Basically, it has been discovered that using coil packs from the "2.0T FSI" and "2.0 TFSI" can give an advantage over the 1.8T coils (Rev R and Rev D, etc). Because of the requirement for the 2.0T to do a leaner burn, the spark must be hotter. By using these more capable coil packs, 1.8T drivers have been able to increase the gap on their spark plugs to .040" or more. This gives a hotter spark with many advantages.

The disadvantage is that the 2.0T coils are indeed longer than the 1.8T counterparts meaning that they don't seal off against the valve cover, and aren't held down very well.

Just recently, coil pack adapters have been designed and are in production for the AWM and AMB engines. Even more recently, adapters have been designed for the AEB and ATW engine codes. These adapters bolt to the valve cover and allow the longer coil packs to seat properly.

There is currently "intro pricing" available on the AEB/ATW adapters (Version 1.3's), so I wanted to make sure you guys were aware.

Please feel free to discuss this here, but for the main thread for info, ordering, and inquiry on these adapters, please go here:
http://www.audizine.com/forum/showth...-INTRO-PRICING

And the main thread which explains this all:
http://www.audizine.com/forum/showth...FSI-coil-packs

Myself, I've ordered one set of the V1.2 adapters for my AWM car, and one set of the V1.3's for my brother's ATW car. I'll be running the red 06E-109-115E coil packs. My brother will probably be using the Cali emissions version.

[walky_talky20]

Adding some pics for those who don't like to read:

[nzant008]

Hi, Very interested in this topic. I have been through the and some of the post on the other threads.

I have a question. How would one fit these coils on an old AEB engine set up. I have noticed that all the coils are 4 pin but mine is a 3 pin. Is there an easy conversion to using the different plugs (ie a 4 pin plug etc) or is there an alternative way??

[revolution337]

good info walky. I'm saving this thread

[biketsai]

Do like. So what kind of gains can we see?

[Seerlah]

I'm about to pick these up myself.

[2001A4QUATTRO]

Do like. So what kind of gains can we see?

Likewise

[bandit]

I work for VW and this looks like a sweet idea

[viceprp]

Do like. So what kind of gains can we see?

SEARCH!

LOL, Winston.Podi did a thread and gained 15whp/15ft-lb on a b6 gt2871 on 18psi.

I'll be either running these or Aem pencil coils

[guy022077]

SEARCH!

LOL, Winston.Podi did a thread and gained 15whp/15ft-lb on a b6 gt2871 on 18psi.

I'll be either running these or Aem pencil coils

this is a cheap upgrade, 80 bucks plus those adapters.....good thing i did the coilpack upgrade on my AEB...i need every horse i can wrangle.

[biketsai]

SEARCH!

LOL, Winston.Podi did a thread and gained 15whp/15ft-lb on a b6 gt2871 on 18psi.

I'll be either running these or Aem pencil coils

15WHP? Thats all I need to hear.

[nzant008]

this is a cheap upgrade, 80 bucks plus those adapters.....good thing i did the coilpack upgrade on my AEB...i need every horse i can wrangle.

Can you please provide a link on how to upgrade the AEB coilpack harness?
Thanks in advance!

[spindoctor]

Interested. :)

[xdewaynex]

Just skimming through on the original thread in the B6 area, it seems like a great idea. I guess its time to start saving, swap over my AEB coil wiring to the newer style, get the adapters, coils and hold downs for the push down coils and ride out. Plus if someone gained 15whp just from this, thats awesome.

[JumboBlack1.8]

Ordering a set of these today. It'll be GREAT to finally address my random misfires under WOT.......Really hoping these will have a good effect on my tri-electrode FR5DTC plugs

[walky_talky20]

The major advantage here is the ability to run a larger plug gap. If you run them with the same plug gap (.028 for most of us), then you won't see much benefit unless your coils were already bad. Of course these 2.0T coils may prove to be longer life than the 1.8T ones, especially if the gap is kept small (less stress on a stronger coil). But they are cheap anyway, so gap it up!

[JumboBlack1.8]

I think my coils are somewhat weak, so I was already planning on buying a new set. Once I get these installed, I may start hunting down a new plug for my setup......I can't believe the reported gains of these. Its amazing, considering the cost

[gmx]

SEARCH!

LOL, Winston.Podi did a thread and gained 15whp/15ft-lb on a b6 gt2871 on 18psi.

I'll be either running these or Aem pencil coils

Link?

If I'm thinking what it is, that was Okada Project coils vs the Rev R.
It made more hp because the Rs had a miss up top IIRC too?

Other than that I do not believe ANYONE has tangible hard data yet. But very good obvious feedback. Smoothness in all driving conditions is enough for me. Even if power/tq was the same I'd still do this upgrade. Drivability aspect is often too much overlooked.

Just clearing up before anyone gets disappointed...

[JumboBlack1.8]

Very good point! With this upgrade, driveability is far more important to me, as I've already got more than enough power ;)

[biketsai]

Very good point! With this upgrade, driveability is far more important to me, as I've already got more than enough power ;)

I wish that were the case for the rest of us ;)

[Papa_Dios]

How do the 2.0 coils differ from the 1.8t? I have an 01.5 and had mine changed under recall not to long ago. I'm interested but not if they are basically the same revised versions.

[walky_talky20]

How do the 2.0 coils differ from the 1.8t? I have an 01.5 and had mine changed under recall not to long ago. I'm interested but not if they are basically the same revised versions.

If you want to wait it out, I should have some of that data for you. I just got a set of the "115 D" coils yesterday at the dealership under the recall. So I'll have fresh "D" coils to compare against the 2.0T coils at high plug gap settings. I'll be buying the red coils (which are actually the V6 FSI coils as used in the C6 A6, R8, etc), but I think my brother will probably get the black 2.0T california emissions "lean burn" coils. So I should have a bunch to compare.

I've been running on some old "L" coil packs lately. I had some "R's", but I didn't want the dealer to throw away the ones I paid for. (They definitely won't give your old coils back after the recall, even for spares). So I dug out some "L" coils that barely worked. Car was running like poop, but runs so much better now with the fresh "D's". I can't wait to see the difference with the 2.0T stuff and a higher gap.

[JAW714]

Subscribed - I'm thinking of going BT soon. This would be a great addition.

[guy022077]

Can you please provide a link on how to upgrade the AEB coilpack harness?
Thanks in advance!

http://www.audigeeks.com/forums/index.php?topic=3181.0

http://www.ecstuning.com/Flyer-Sprin...ance/ES477951/

[flynnr]

idk. im kind of skeptical.

i am running 034 IIc standalone, will i see gains simply by throwing these on and opening up my gap? will i have to re tune anything? how will i know what to gap it at?

[walky_talky20]

The largest gap that your coil will support. I'm planning on starting at .040, then .045, etc. The larger the gap, the hotter the spark and (hopefully) a more complete burn. That leads to more horsepower, less emissions, and greater mpg. However, the larger you open the gap, the harder it works the coil as it is demanding more voltage before it jumps. This can shorten the life of the coil somewhat.

[Seerlah]

Hey Walky, I have some spare L (not weak) and R version ignition coils if you want them for testing. I have 3 L and 2R, but want to keep a spare even though I may not need it (running the Hitachi E, and will keep one of the R versions if you want these. just better to have one than not to). Just pay shipping and they are yours. I should be able to flat rate ship them, so it should cost $5 and some change to get them to you.

[walky_talky20]

I think I'm all set Seerlah. I've got a good set of R's so I can compare. I don't think it's worth it to compare the L's. I don't think you can even buy those anymore.

Thanks for the offer, and I'll let you know if something changes.

[ricekikr]

How do the 2.0 coils differ from the 1.8t?

FAQ:

1. Why would I convert my 1.8T to use 2.0T coils?

Allthough when we dissected the 2.0T Coil , internally it was the same as a 1.8T unit.

Read the FAQ here:
http://www.audizine.com/forum/showth...-INTRO-PRICING

I don't get how a 2.0 unit can run hotter than the 1.8 if they're internally the same. Maybe the difference in length?

[ECS Tuning-Audi]

For the AEB guys to take advantage of this what mods do they need to do to the wiring harness to run the newer coils? Is it the same as the ICM delete?

Jason

[walky_talky20]

Yes, delete of the ICM, including the new coil pack harness/plugs. Using OEM replacement harness for the Jetta 1.8T would be the cheapest route. Or a used harness, but that's not advisable due to the way those harnesses get heat treated.

[CamrideA4]

I just put mine in. I can feel a pretty big difference between the MK VI coils and my ~2 year old R's. I've got my BKR7's gapped at .035 right now, I may push them out a bit tomorrow. I'll get logs tomorrow as well.

BTW, can anyone tell me if I use the same procedure in this TSB to replace the wiring harness in my AWM engine: http://www.squarewave.com/army/andre...b.97-04-02.pdf It doesn't specify that engine code but I've read other threads that said that is the procedure to use. Just wanted to be sure.

[nzant008]

http://www.audigeeks.com/forums/index.php?topic=3181.0

http://www.ecstuning.com/Flyer-Sprin...ance/ES477951/

Thank you.

The DIY thread will need some digesting!!!

Very excited now!!

[J Ozzie]

humm i may upgrade to these in the near future!

Thanks for posting man!

[malanca]

Great info! Thanks for posting, this is really a very good upgrade.

And the best part: this is cheaper than replacing that f@ck'n ICM in case of failure!

[gmx]

For the AEB guys to take advantage of this what mods do they need to do to the wiring harness to run the newer coils? Is it the same as the ICM delete?

Jason

By using the MK4/transverse repair harness you guys sell :)
Just don't use one of the connections which only applies to transverse cars on that harness, and you're set.

[walky_talky20]

You could even get away with using this harness, from the newer 2.5 engine. Of course you'll need to remove the plug for cylinder 5! But the connectors are all there, for very cheap:
http://www.ecstuning.com/Flyer-Sprin...ance/ES477951/

[ECS Tuning-Audi]

You could even get away with using this harness, from the newer 2.5 engine. Of course you'll need to remove the plug for cylinder 5! But the connectors are all there, for very cheap:
http://www.ecstuning.com/Flyer-Sprin...ance/ES477951/

Keith not sure if this matters but I noticed it mentions this harness is for auto transmissions only. So be advised there may be complications other than just removing the 5th cylinder plug.

Jason

[walky_talky20]

Keith not sure if this matters but I noticed it mentions this harness is for auto transmissions only. So be advised there may be complications other than just removing the 5th cylinder plug.

Jason

Certainly, you would be trashing most of that harness so it doesn't matter at all. You would just be "harvesting" the coil pack section of the harness: 4 coil connectors and the wires for them. Pretty sure that I'm going to do this before I put in the 2.0T coils. Definitely not plug-and-play, but neither is the Jetta 1.8T repair harness.

[ECS Tuning-Audi]

Certainly, you would be trashing most of that harness so it doesn't matter at all. You would just be "harvesting" the coil pack section of the harness: 4 coil connectors and the wires for them. Pretty sure that I'm going to do this before I put in the 2.0T coils.

OK, I just didn't want people to get the wrong idea that all that would need to be done is remove the 5th cylinder wire.

With how inexpensive these harnesses are I just might have to pick one of these up myself!

Jason