intake and headers upgrade question

[Brad92accord]

This may sound extra noobish but i need an answer. I wanted to upgrade my intake mani and my headers to A6 because i have an F22A1 motor..these will fit ont he F22A1 motor right?


thanks


PS..how much power can i expect to gain with these?

[ExplodingCake]

This may sound extra noobish but i need an answer. I wanted to upgrade my intake mani and my headers to A6 because i have an F22A1 motor..these will fit ont he F22A1 motor right?


thanks


PS..how much power can i expect to gain with these?

Yeah direct fit. You also need the PT6 ECU from a 92-93 EX to activate the secondaries on the intake manifold , plus the IAB.

[Brad92accord]

what is the IAB? pic?

[91 EX-R]

you'll want to get the header from a A4 since that was a tubular design. the A1 and A6 were cast manifolds. you should try and get the A6 cam along with the intake mani and ECU. with those installed, you should be seenig around 140-145 HP.

here man, check this thread out:

http://www.cb7tuner.com/vbb/showthre...ighlight=%2450

could someone please, please sticky this thread?

[Brad92accord]

if i wanted to just upgrade from the a1 headers to the a4 could i leave everything else the way it is? and what years or models did the a4's come from??

how much power with just the a4 header in???

[91 EX-R]

yes, you can leave everything the same. all you need is the A4 header and downpipe. i'm pretty sure they came in the 90-91 EX's.

and expect close to a 5 horsepower gain. not much, you won't even feel it. although coupled with the A6 parts, it'll be a lot more noticeable. it'll be around 5 horses as that was apparantly the only difference between the A1 and A4.

[Brad92accord]

now what if i got just an a6 header? wouldnt that gimme like 10hp?

srry im noobish with engine stuff

[91 EX-R]

no. the A6 exhaust manifold was identical to the A1 manifold. or really close to it.

in order to get the power increase to 140, you need the A6 camshaft, intake manifold, and ECU. those alone will bring you to 140, since it's basically converting your engine to an A6. with the A4 headers, it'll be close to 145. that's a nice gain from the 125 you got right now!

honestly though man, read the thread i linked to a couple posts back. it answers a ton of questions, and tells you how to gain a bunch of power for relatively cheap.

[Brad92accord]

but all the labor isnt gunna be cheap because i cant do it. im going to school when i graduate to learn mechanics but stil

[ExplodingCake]

with the A4 headers, it'll be close to 145..

I would not say switching the A6 Exhaust manifold to an A4 one will give extra 5 horses. Remember that the A4 and A6 exhaust manifolds are identical EXCEPT the way it looks. A4 is more of a tubular and the A6 is more like of the A1 surface structure. However , both A4 and A6 manifolds are 4-2-1 design. If you switch both either manifolds to the A1 engine , yeah it will give extra power.

Yeah we hear that A4 manifold is quite better than the A6 but so far , for me I have not seen any proof that the A4 is better than the A6. Overall both manifolds are better than the A1 of course.

[evil_demon_01]

http://www.cb7tuner.com/vbb/showthre...&highlight=whp
Good reading right there. And answers all your questions

[91 EX-R]

http://www.cb7tuner.com/vbb/showthre...&highlight=whp
Good reading right there. And answers all your questions

i beat you to it a few posts back.

and i was under the impression that the A4 header was the best one. this is just going on what was posted in that thread though. i actually had no idea the A4 and A6 were that much alike. thanks for the info!

[evil_demon_01]

Oh crap I missed it, I was wondering why no-one had mentioned it

[91 EX-R]

Oh crap I missed it, I was wondering why no-one had mentioned it

yea, that thread really, really needs to be stickied. (hint, hint)

[benji]

i beat you to it a few posts back.

and i was under the impression that the A4 header was the best one. this is just going on what was posted in that thread though. i actually had no idea the A4 and A6 were that much alike. thanks for the info!

I always thought that the A4 was better also, because the tubular design was smoother (more free flowing) than the cast A6 mani. Like DS said, either way it is a 4-2-1 design, so I'd say (in my opinion) maybe a 1-2 hp difference between them.