after i get the h23 intake manifold installed on my a4 and then cut the balance shaft belt and then put an a6 cam in what ecu should i be running?? i was told to run an obd1 p12 ecu is there such thing?
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well heres the deal.....the p12 is for the F22a1 engine you have a F22A4 and can also work for the A4 engine the P12 comes from a A1 installed in a prelude that has 10 hp more than the A1 in the accord. You have a H23 Intake manifold that has secondary runners with a butterfly system witch I call it....in order to operate the H23 Intake manifold right you need a Pt6 ECU that comes with the F22A6, it also has a intake manifold similar like the H23....the Pt6 operates the the Manifold, also one more thing, when you say A6 Cam? you mean Camshaft right?....still with that Pt6 is your bet! the p12 wont do you any good.....Originally posted by Motoxpaul05 View Post
Originally posted by deevergote -
quick ?
just running through some thoughts well using the a6 runners our the BF valves / secondary valves are they located in the runners so if i was to change the plenum to the H23 will the a6 runners and secondary valves still work i have the pt6 i havnt got the chance to jump into the intake manifolds section yet so just wondering what im gonna need and run into thinking of keeping the a6 runners and changing the plenum to H23 seems simpler with gainsI want to die in my sleep like my grandfather... Not screaming and yelling like the passengers in his car
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Oja Thnx Everyone, at cb7tuner.comComment
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ok, well the difference in the H23 and F22A6 manifold is mainly the upper plenum of the manifold, the H23 is bigger and more rounder and efficient for high flow, the A6 is just stock, also the H23 I believe it has a Bigger Throttle body as well...so if you want the H23 you don't have to totally change manifolds...just get the upper half and all the air valves including the Throttle and TPS on the TB, oh and the Spacers are exactly the same, the Pt6 will open the butterflies in both Intake manifolds, my A6 manifold has the butterflies removed so it has open air at all time more tq but lost a little in top end, if you berly got into manifolds then you should check out the Double spacer stacked H23 Manifold in has a little increase of power....it includes two spacers installed in one manifold...hope this helps?....Originally posted by Oja View Post
p.s if any thing above is wrong plz correct me./..
Originally posted by deevergoteComment
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The main differences in the a6 and the h23 IMs are a bigger plenum and tb on the and slightly longer runners on the a (about 1/2 inch). The bigger plenum will give you more available air at launch, the longer runners on the a6 will give you slightly more torque than the h runners. More torque is the same reason for double stacking the IAB plates as well, the longer runners (pipes, tubes) give the air more chance to straighten out and flow more effeciently. Without the butterflies in place, you should be losing some torque in the low end. The main reason they are there is to keep you down to one set of intake runners when the engine doesn't need that much air in the low revs.Originally posted by turboAccordHSF View Postok, well the difference in the H23 and F22A6 manifold is mainly the upper plenum of the manifold, the H23 is bigger and more rounder and efficient for high flow, the A6 is just stock, also the H23 I believe it has a Bigger Throttle body as well...so if you want the H23 you don't have to totally change manifolds...just get the upper half and all the air valves including the Throttle and TPS on the TB, oh and the Spacers are exactly the same, the Pt6 will open the butterflies in both Intake manifolds, my A6 manifold has the butterflies removed so it has open air at all time more tq but lost a little in top end, if you berly got into manifolds then you should check out the Double spacer stacked H23 Manifold in has a little increase of power....it includes two spacers installed in one manifold...hope this helps?....
p.s if any thing above is wrong plz correct me./..Comment
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The H23 manifold and the F22A6 manifold are completely different, aside from the fact that the bolt pattern is the same, and that the ports match up.
The PT6 should be used to properly operate the F22A6 and H23 manifolds.
I'm sick of everyone saying "get a P12!". It is ONLY good for the F22A1 and F22A4.
ALL of these parts are "stock" parts.
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what about a butterfly delete.then install the p12.would that work?Originally posted by deevergote View PostComment
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If you have an A6 cam on your car, you should be running on a PT6 ecu.
If you have a stock A1/A4 cam, then P12 would be a good choice.
The butterflies can be vacuum operated if you are worried about that, just hook them to the plenum and you are done. They'll open around the 3-4k rpm range due to vacuum pressure loss.Last edited by shadowdlink; 12-01-2009, 01:14 AM.Accord 93 LX: H23 intake mani, Ebay short ram, P12 ecu, Full exhaust. Lots of noise... and that's about it, just noise. LOL
Mazdapeed MX-5 04: Begi Intake, Forge BOV, Ebay FMIC. Whoooooooosh... Phhhff!Comment
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The P12 is designed to run a stock F22A1. It is not designed to run an engine with a larger intake manifold, or a different camshaft.Originally posted by 92smokeaccord View Post
Would it work? Sure. Would it be an upgrade worth suggesting to someone? No.
The P12 is ONLY good on a stock or near-stock F22A1. It's not some "always adds 10hp" supermod.
If you want any gains at all from an ECU, learn how to tune.
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but what do you think? is it better to do the butterfly delete or just leave them in?Comment
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Understand the concept behind the IAB system, and decide for yourself.
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