i know that i/h/e makes a huge difference to a 99-00 civic Si but does it also make a big difference on a 4th gen Prelude Si??

 

yes

 

yes. also mods generally respond better to bigger displacement. so you're looking at some decent gains. but don't expect any huge difference.
10-15WHP would be a decent gain.

 

a dyno tested 4th gen SI made 155 whp 155 lb-ft of torque with i/h/e

considering 15% drivetrain loss, thats 183 hp 183 lb-ft

btw: that same car made 136 whp with just intake (short ram i think too)


[Modified by F23 Power, 6:09 PM 9/29/2002]

 

damn really? i got that and gude cams at i am 163.7hp thats good. its about 87degrees outside when we did it.

 

Yes and no...

a 4th gen has a very restrictive Air flow....and does benefit 15-20whp from mods

But basically I/H/E/V-AFC tuning you won't get much above 180whp without cracking the motor open.

 

[QUOTE]
a 4th gen has a very restrictive Air flow....QUOTE]

i have a feeling that an intake manifold would yeild good gains on h22s

 

I agree the H23 is capable of unleashing a decent amount of power from I/H/E.
I need headers and to modify my intake to get the best gains.. cant wait for heders.. but I maybe getting a H22a soon so headers may not be a good thing to get right now..

but yeah between 10/15hp with a decent setup

 

that's with a not so good setting on the cam gears. i/h/e, cam gears, 8lb flywheel
max 153.4hp 144.6 torque

 

H23 POWER!!! woo hoo bolt ons with a little gude cams runin. not tuned though!! i am thinkin bout 168 tuned.




[Modified by BoostedH23a1, 2:40 AM 9/30/2002]


[Modified by BoostedH23a1, 2:41 AM 9/30/2002]


[Modified by BoostedH23a1, 9:35 PM 9/30/2002]

 

wow... 150whp is good for an h23.... what year is it?

 

mines 163.7 on a h23 what about me

 

ur boosted... shut up

 

i/h/e make a big difference over stock set up

 

It makes a difference but I think suspension is the first thing to do. This is coming from someone who did I/H/E and that stuff first, suspension last.

My recommendation to someone who has a stock Prelude engine bay right now...leave it that way. Get an intake and exhaust if you want, but wait until a few more parts are released, I.E. SMSP's header or the Skunk2 IM and see how they do. The H22A comes with a VERY good header stock, I'd wait it out.

 

yeah i didn't change my headers. just i/e

 

on some cars i'd agree about the suspension...but the stock prelude suspension is bad ***...this car handles with the best of them, that's why i haven't touched mine yet...also, intakes are cheap and the best bang for the buck bolt on

 

uhhhhhhhh no. An SI with I/H/E only gained 11 HP and 7 Lbs.ft. .. from a stock 136 HP to the wheels. That car would need some boost to get 180+ lbs ft. of torque... mkayyyyyyy.

Don't know where you're getting this inflated info.. but it is <U>tre</U> wrong.

 

NO ITS NOT BOOSTED YET ITS ON THE WAY.. this is just /i/h/e cams. good god 163 with boost i would have to laugh my *** of at that.ahah

 

163whp??? W/ just I/H/E and cams????

 

and 13 pound flywheel.

 

eh?

 

damn no wonder mines quick. i still dont understand why i can beat the VTEC's with the same mods i have. whats the deal?? ive raced 4 at the 1/8 mile. and like 3 on the interstate (not sure bout their mods i heard intake and saw an exhaust on all of them on the interstate). someone explain this to me...??

 

one easy answer...must me racing horribel drivers...


[Modified by 95vtec****, 5:37 PM 10/1/2002]

 

dude im sure not all 7 of them are that damn bad. that still wouldnt explain why i pull away from them on the interstate (not saying i pull away fast or anthing but i pull away).