tuning guru's chime in
 

Well today we had a dyno day. at a local shop i have a b16 .20 overbore 9.0cpr street tuned my self 15 pounds on lo cam high cam 20. my first question is the dyno when we did a pull i only could boost 17 psi. but to my suprise i pulled off 301.9 hp and 194.6 tq the only thing that has me thinking is my max hp was at 8150 i redline at 8800 and tq was at 7600. I think it maybe a timing problem but im not positive my af at peek hp was 10.7 i know that is pig rich but i like to play it kinda safe. What can i do to get more mid range power.

Re: tuning guru's chime in
 

tire/rim size, gearing, more tuning, better cams, timing, etc, etc...

Re: tuning guru's chime in
 

Not run a B16 crank.

Re: tuning guru's chime in
 

i was wondering if that may have did it at the track i run my 14 but for dyno day i had 16's

Re: tuning guru's chime in
 

What?

Re: tuning guru's chime in
 

Agreed :P It's hard as ---- to make good usable power on a b16.

Re: tuning guru's chime in
 

No you just need to grow a pair with the boost controller.

20 pounds makes B16s fun.

Re: tuning guru's chime in
 

thats another think my car has a boost creep when vtec ingages i creep 20-22 psi but on the dyno i only got like 17.6 then boost fell off i added more timing to my map today the car spools faster and pulls a lil harder i think ill go back to the dyno to clean up my tune a lil more def need to fininsh my det cans though

Re: tuning guru's chime in
 

Uh yeah....right. I ran my old b16 up to 17psi on a dynojet and still never broke over 300wtq and that was from an sc61.

HP=(Tq x rpm)
----------------
5252

You do the math, only reason b16's can post high hp numbers is due to high rpm capabilities. :P

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Dude a 300wtq Honda engine is going to be making like, 500whp.

I'm not hating, just saying when you throw enough boost at them they make fun street engines.

I tuned an 84mm B16 with a 57 trim on it at 18-19psi a few weeks ago that is a rocket ship, even if it's not making a ton of torque.

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i know that trying to make decent tourqe on a b16 will own me but 194 sounds off and to peek so late in rpm ive been going threw my maps adding more timing so next week back to the dyno for hopefully some better numbers my cooling setup blows im thinking its the ebay intercooler i still usually only run 20 deg above the temp outside but i have afeeling its killing power some how.

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I'm not trying to bust your balls, plus an 84mm block has a little more displacement than the typical 1.6, I'm just trying to say torque from a b16 is never going to be what we'd like it to be. Add in the benefit of a light-weight chassis and it's always a recipe for good fun.
No, 194 sounds about right believe it or not. Like I said before, they're not known to be torque monsters. If you want 4 cylinder torque, get a 4g63 instead.

Re: tuning guru's chime in
 

yea ur right iv done my b16 dyno graph research and im just about were everyone else is im still gunna try to break200 mark though any sugestions