H23a intake planum and a6 runner swap performance ?

[Caution]

For those of you who done the a6 runner and h23 plenum swap on your f22. Well, I done the swap like 2 months ago, but really didnt get to drive the car till now. I do notice the car pulls more than the stock singo runners. It pulls from 2.5k rpm all the way to about 5k and then its just kinda stops pulling, but just seems to scream all the way to REDline. It seems like there is no top end and that seems like the powerband just drop because it aint going any faster. Haver you guys experience that??

Another Question is its kinda sluggish or slow on the throttle response, is all your guys setup like that?

Maybe I need to upgrade injector, I did do some pnp.

let me know!

sorry, my setup...
iab hookup via vacuum,
stock singo runner ecu
f22a6 runner with h23 plenum

[d112crzy]

which ecu are you using?

[blackcb7]

i am guessing he is using a pt3, cause he said single runner ecu

[Caution]

correct, stock f22a1 ecu

[d112crzy]

you should upgrade to a pt6 and hook up the butterflies correctly.

[LinX]

Throttle response is going to be slow because according to you setup, you have a pt3 ecu that cannot be wired to vacuum cannister so your butterflies must be open all the time. Hooking up the IAB's through an ecu such as a pt6 can activate vacuum from startup and let it go at a certain rpm.

[owequitit]

There would appear to be other issues somewhere.

Like they already said, having the IAB's hooked to vacuum is going to dull throttle response because the butterflies are going to pop open under a significant amount of throttle, resulting in reduced intake velocity, and thus less response.

The fact that they are hooked up to vacuum, should allow them to open at full throttle, so that shouldn't be restricting it in the top end.

Typically, the ECU pops them open at 4800.

you may want to check other stuff out, because even with a slightly modified stock airbox, with a stock paper filter, mine pulls harder until about 6K and then gradually tapers off to the rev limit at 6800. It still pulls right on up to 6500 though.

[owequitit]

Actually, I just though about something else.

Your cam may be a contributing factor too. The A1/A4 cam is smaller than the A6 cam. The A6 cam made a very noticable difference in the power band, with the A6 manifold. Since the H23 plenum TB would be conducive to higher RPM breathing and the cam isn't, that may be where your issue is.

[wed3k]

yea mine pulls all the way up to 6k
w/ PT6, 3" intake

[accordaffair]

I'm in a similar boat, I feel like I'm not getting enough air to be productive when I get higher up in rpm's. It feels to me like the cam profile is not as aggressive as it could be. Although I ponder whether I really want to install a D-260, considering I really want a 5 speed with no rust issues...I've wondered a lot lately if I should keep spending on this cb7 or get more serious about finding a replacement cb7...

[owequitit]

I'm in a similar boat, I feel like I'm not getting enough air to be productive when I get higher up in rpm's. It feels to me like the cam profile is not as aggressive as it could be. Although I ponder whether I really want to install a D-260, considering I really want a 5 speed with no rust issues...I've wondered a lot lately if I should keep spending on this cb7 or get more serious about finding a replacement cb7...

I understand your point, and with the way I did my upgrades, it is hard to say what the limit of the A1/A4 cam was.

At least if you get a new CB, all of the parts will transfer over if you so choose, so it wouldn't really be wasting money unless you left CB's all together.

From a labor standpoint, I can see waiting, but getting it to pull correctly, really makes the car a lot more fun.

I still wish mine was a manual, but I am a lot less disappointed with the auto now. For me, it expanded the powerband in the two places it was needed most. Down low and up high.

I can say this though. Based on the A6 manifold, there still wasn't much point in going above 5500 RPM. Once, I switched to A6 cam it would pull to about 6, but there wasn't much point in going above that.

Now it pulls into 6500 the way it used to pull into 6, and then past 6500 is a little better than pulling past 6 was with the stock A6 manifold and A6 cam.

It still pulls to 6800, but it isn't really necessary to go there. The only advantage it has really, is dropping the car at a more advantageous RPM when it shifts to the next gear, because the auto gear spacing sucks.

[Caution]

i get wat u guys are saying about the ecu and cam, but i pnp my bro civic with aftermarket tb and skunk 2 intake manifold and it feels the same like mine. It pulls all the way to like 5.5krpm and then it just screams all the way without any more pull, I really do believe its the fueling that im lacking,

[owequitit]

i get wat u guys are saying about the ecu and cam, but i pnp my bro civic with aftermarket tb and skunk 2 intake manifold and it feels the same like mine. It pulls all the way to like 5.5krpm and then it just screams all the way without any more pull, I really do believe its the fueling that im lacking,

I don't know about your brother's car, but your fuel system should have enough capacity if everything is in good order.

Have you changed the fuel filter? Maybe clean the injectors. For leaving them on the car and still cleaning them, I like Redline Fuel System cleaner. It works really well.

Also, it almost sounds like your timing is a tooth off. Did you do your won timing belt at any point in time?