puffxy

after my h22a swap, i've notice a drop in power around the 3k - vtec rpm area.. i had a h23a before and i'm used to shift ~ 6k or so, when doing that now i pop straight out of vtec and have to work my way up again =|, i'm wondering what kind of mods are possible to bring my low end back?

thx

KB798

if you have a CAI, then change that to a short ram intake. that should bring back a few in the lower end.

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Brian

yield

I've heard that pullies and advancing your timing can help with mid-range power.

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Si_g

just wondering bout what u just say, dont all vtecs have automated timing ? my friend go 5gen and told me that it sets itself automatically ?

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concLude

it can only be done OBD1

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Brandon
Captain - my other car has two engines
1993 Prelude Si (JDM H22A with automatic to 5spd Swap)
My white 93 Vtec
AIM: Mach30SiR

preluda92

When advancing timing try to think of it as moving the powerband. If you advance it you'll have more power up top but, you'll make a tiny sacrifice down below. I found 18 degrees past TDC (3 advanced from stock) worked best for me. But, I have an H23a. The pullies will make the whole power band 1-2 hp better!

overdrive23

pullies can help w/ mid to low range power..but advancing timing does not add any power at all. i WISH it did..b/c that would be a very cheap/easy mod.

what preluda92 wrote is acurate.

preluda92

hehe it does add power if your timing wasn't anygood to begin with I.E mine was 3 degrees retarded.... She felt alot better after that!

Satan_SRV

You might want to check with 4bidden...maybe your knock sensor is messed up, as it seems like you almost have a 'hesitation' at 3,000 rpms?

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Joel
Dirty Supra Turbo Hardtop

yield

you're right, but in essence you are "adding" power depending on where you spend most of your time in the power band. And yes you can only do it on obd1 (92-95 years).

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overdrive23

how did it get to be so retarded..lol. ? well im glad its fixed and its running normal.

btw yeild. im glad you put quotes on "adding" b/c its not increasing anything..its just shifting the powerband over so you hit it sooner. but if you drive in your powerband all the time, your gonna hurt your car and i hope that no one does that ALL the time.

yield

not ALL the time, but most of the time when you are racing, which is when it matters Plus I'm H23 so maybe I'm looking for ways to blow up my engine (swap).

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