Can you add the B8.5 intake manifold to the B8?

[amz]

Hi everyone. I've been drooling over APR's numbers since they officially announced yesterday and I know this question is going to be going through a lot of B8 owners' heads'. Has anyone investigated retrofitting the B8.5 intake manifold onto the B8 cars? As far as I can tell it should be a pretty straightforward swap to put in the components:
- B8.5 metal intake manifold w/ alcohol sensor + fuel injector
- New fuel line to the 5th injector
- New ECU + component recoding so they don't go into protection mode

The real problem is going to be figuring out how to wire the fuel injector and alcohol sensor so they can communicate with the ECU. Not saying it's cheap, but the APR stage II numbers are near enough to stage III that it could be worth it - specially if you happen to find the bits at the wreckers yard.

[Ryan_T]

I'm not sure those gains are because of the intake manifold alone. The 91 and 93 numbers are different as well, and those have nothing to do with the intake.

Either the insides are improved, or maybe us B8 guys can eventually see those gains as well. Here's hoping for the latter - especially since there are no E85 around me.

[amz]

I'm not sure those gains are because of the intake manifold alone. The 91 and 93 numbers are different as well, and those have nothing to do with the intake.

Either the insides are improved, or maybe us B8 guys can eventually see those gains as well. Here's hoping for the latter - especially since there are no E85 around me.

If I understand everything correctly, the new manifold actually has a fuel injector in it, which would give tuners the ability to add more fuel into the mix (and actually reduce the amount of fuel each injector is responsible for.) More fuel = more POWERRRRRRRRR. That would explain the extra numbers on 91/93 octane; I'm pretty sure nearly everything else about the engine is the same. Also, the 5th injector means carbon buildup won't be a problem anymore.

[oascom]

Let's hope revised version will be close to this tune without e85 part ofcourse

[oascom]

Stage 2 e93 b8 (crank) = 352tq and 277hp
Stage 2 e93 b8.5 (crank) = 343tq and 302hp

That's huge bump in hp numbers and the graph is way better car pulls to the end don't fall on its face...



Stage 2 E85 = 405tq and 318hp that is crazy.... This tq kills...

[StigThe]

Well, I have B8 flexifuel 2010 with metal intake maninifold (were available in Europe, but not in US).
Comparing photos it looks identical / close to indentical to 2013 B8.5 engine.

So qualified guess on question is either yes,
or alternatively that the B8 flexifuels are like early beta versions of B8.5 engines...

[adamazing]

More fuel = more POWERRRRRRRRR.

Air = power. Not fuel.

Adding more fuel enriches your AF ratio.

[Jerry1847]

Air = power. Not fuel.

Adding more fuel enriches your AF ratio.

Well you just need a bigger turbo then don't you ☺

Anyone gonna test this out?

[amz]

Air = power. Not fuel.

Adding more fuel enriches your AF ratio.

I was making a bit of a subtle implication. Getting air into the system isn't a problem, the limiting factor is getting enough fuel into the mix to maintain the A/F ratio. So, more fuel = more POWERRRRRRRR.

[Jerry1847]

Getting air in the system is the biggest problem.... That's why a tune increases boost to add air, and why you need a bigger turbo to get big power.

Out cars don't have any fuel limitations, especially with the stock turbo. No upgrades to fueling need for bigger turbos like the k04 or gtx28's.

[Benan]

If I'm not mistaken, the B8.5 have a fifth injector to clean the inlet valves, the B8 flexi fuel witch we have in Sweden dose not have that, so the are not the same al the way.

[IHave2Turbos]

Has anyone seen a flow or displacement comparison between the b8 and b8.5 manifolds? Does the metal flow more air? Even if you plugged the 5th injector hole and put it on the B8 would it be a middle ground between stock and the $900 IE manifold?

[Lambda13]

Has anyone seen a flow or displacement comparison between the b8 and b8.5 manifolds? Does the metal flow more air? Even if you plugged the 5th injector hole and put it on the B8 would it be a middle ground between stock and the $900 IE manifold?

Glad you found this and necro bumped it. I'm interested as well, as indicated in the FT thread.

[Mr.Audi]

B8.5 have metal intake mani?

Pretty sure mine is plastic...


Sent from ....

[The Infiltrator]

B8.5 have metal intake mani?

Pretty sure mine is plastic...


Sent from ....

I've seen them on the Allroads but I'm not sure about sedans.

[Lambda13]

I've seen them on the Allroads but I'm not sure about sedans.

I've seen sedans with the metal one somewhere.

[Smellie]

I've seen sedans with the metal one somewhere.

He might have a 6MT, MT's have no metal intake

[Mr.Audi]

He might have a 6MT, MT's have no metal intake

And there we have it


Sent from ....

[adamazing]

B8.5 have metal intake mani?

Pretty sure mine is plastic...

B8.5 Tiptronic models that are FlexFuel capable (Allroads and Sedans) have metal intake manifolds.

[Lambda13]

B8.5 Tiptronic models that are FlexFuel capable (Allroads and Sedans) have metal intake manifolds.

My buddy has an 8.5 without flex fuel but a metal intake... This shit has no rhyme or reason!?

[adamazing]

My buddy has an 8.5 without flex fuel but a metal intake... This shit has no rhyme or reason!?

Say what? That's the first I've ever heard of that. Did Audi just put a plug in the fifth injector hole?

[Lambda13]

Say what? That's the first I've ever heard of that. Did Audi just put a plug in the fifth injector hole?

Unless I'm mistaken, he's never mentioned having that option before? IDK maybe he does lol

[SleeperCar]

Unless I'm mistaken, he's never mentioned having that option before? IDK maybe he does lol

he definitely does...most dont know about it..unless they are enthusiasts looking for a specific tune.. tell him to look on the inside of his gas cap...it will say if he can take flex

[Lambda13]

he definitely does...most dont know about it..unless they are enthusiasts looking for a specific tune.. tell him to look on the inside of his gas cap...it will say if he can take flex

Roger, will do.

[hyperunion]

Say what? That's the first I've ever heard of that. Did Audi just put a plug in the fifth injector hole?

Some Early models of b8/5 had the metal intake but did not say e85 capable.. All metal intake cars have the 5th injector and can run e85... The whole fueling system is upgraded to withstand the corrosive effects of ethanol... Even heard the engine was strengthened with better internals as well

[blbroo]

According to this, the part fits gas and flex cars.

http://www.audiusaparts.com/audi/q5/...at/intake-scat

[Shimmy]

According to this, the part fits gas and flex cars.

http://www.audiusaparts.com/audi/q5/...at/intake-scat

it also states fitment for 2013+

I thought i read somewhere that the manifolds weren't interchangeable btween a b8 and b8.5

[zokissima]

Yeah, I don't think they're interchangeable, but I wish we could get a simple fix like a plugged 5th hole on an OEM manifold. Guess we're stuck saving our pennies for the IE one.

[IHave2Turbos]

my thought with the metal one was that it could maybe be extrude honed to increase CFM and give us a relatively cheap upgrade for the B8 cars. roughly 50% of HPA/IE manifolds.

[Lambda13]

Yeah, I don't think they're interchangeable, but I wish we could get a simple fix like a plugged 5th hole on an OEM manifold. Guess we're stuck saving our pennies for the IE one.

They are the same engine for the most part, can't see why they wouldn't be interchangeable. May need a slight modification but otherwise should be fine no?

[SleeperCar]

They are the same engine for the most part, can't see why they wouldn't be interchangeable. May need a slight modification but otherwise should be fine no?

so it has already been confirmed that the metal intake manifold from a B8.5 will not fit a B8...i am at work so finding the extra time to search for the thread isnt going to happen but i know this has been answered. I am pretty sure it was answered in the APR E85 tune thread though.

[Lambda13]

so it has already been confirmed that the metal intake manifold from a B8.5 will not fit a B8...i am at work so finding the extra time to search for the thread isnt going to happen but i know this has been answered. I am pretty sure it was answered in the APR E85 tune thread though.

Goddammit Audi.