....suck big time. I was only able to net a peak of 173whp@7,600rpms and 123.8lb/ft@6,400rpm SAE corrected.

I tuned the car using STR cam gears. The first run with them set at 0,0 I pulled 171whp. I messed around and eventually got the best numbers with the exhaust and intake both retarded 2 degrees? That is if retarding the cam gears means moving the inner part of the cam gear counter clockwise. I wasn't really sure but I tried both directions.

From my base run however I was able to gain torque throughout the entire powerband. I picked up around 6lb/ft of torque from 2,500-3,500 and my torque from 6,200rpm to 7,200 flatlined at a peak of 123lb/ft.

I'm pretty happy with my powerband but not the numbers. It seems as if I'm developing my power alot lower than most ITR's.

Anybody in Alabama/Atlanta area wanna help me out with tunning?

 

did you ever dyno it stock?
if not then how do you know those numbers suck?

 

what are you using for fuel management? I made 176 whp moderately tuned at Dynolab and their numbers (Even ausmith can back this up) are typically a few low. Based on 176 the other dyno's I have been on are 4-5 hp higher. THi is with Stock cams and stock exhaust with Icebox and JDM 4-1.

If you have a power FC I can help. You need to go to a place that can datalog the air/fuel ratio so you can use a VAFC or something similar to trim fuel. YOu can add 5-10 hp this way safely most times

 

That seems low, what kind of fuel management?

I recently made 175whp with no fuel management, only bolt ons. I'd say you need some a/f tuning!!

 

177/129 with stock cams here

 

Because I trapped 100.7mph with the stock cams. I'm not using any fuel tuning at all. Just cam gears. Another person with the exact same setup made over 190whp without fuel tuning as well.

 

I made lower numbers than you with my Skunk2 Stage 1/cam gears, SMS header, custom 2.5" exhaust, AEM intake, Kenji ECU with VAFC. I spent almost 4 hours on the dyno, got the a/f ratio to right where it wanted to be. The cams made perfectly linear power, unlike most charts I have seen, and never tapered off in power all the way to 8800 rpm. I dont think the chart had a "curve" so to speak. There was no real point of inflection (for those calculus people).

Cam gear tuning didn't help me much either. I gained like one hp or 2 maybe, retarding my timing back to 16 degrees gave me 3 all the way through the power band though. My engine likes the timing @ 16 degrees for some reason.

I was dissappointed just like you, and I guess that is why I sold it all to start fooling around with the suspension. Man this is an expensive hobby. My car was never running times like yours stock though, if it was I would have been happy stock.

 

Seems like you need to tune your air/fuel ratio. Maybe some fuel upgrades are needed; adjustable FPR, VAFC. I'm just taking guesses. I think a good tuner, someone like SgT, Kenji, or someone in you area could really help you out.. As far as your car stock. Sounds like the motor is strong, and the driver is damn good too..

 

Brock - let me know if you need a hookup at a local ATL dyno. I could assist in tuning your car. Let me know.

-Sean

 

I'm not really worried that bad about it because I know it has to be in the tuning. Stock my car was hella strong for an ITR and I just recently ran the 13.7 so I doubt it has suddenly lost that much power in a few months. SGT is too far away but I don't know where Kenji is located. I'm stupid for ever thinking I could get away with just cam gear tuning.

 

How were you tuning the cam gears? like were you going for the mid-range or the high rpm power? because tuning for high end is the almost opposite of tuning for midrange, also what kinda dyno was it?

 

I made 178 on stock cams with USDM Mugen header...I would have expected more from the skunk cams.

 

Something isn't tuned right here, or maybe the car had low hp to start with, but that wouldn't make any sense since he got crazy times with it , well take it to the track Active and see how you run now and what kind of mphs and times....also notice his peak hp and torque fell alot, like peak hp at 7600 rpms and peak torque at around 6500, that awesome considering stock i think peak hp is like 8000 and torque at like 7500 rpms, im almost sure it would show great numbers at the track....remember the lower your peak torque is the better (at least i think thats how it is)....

 

Cosworth and I could help if you want to drive over to ATL. I could use a little more time on the dyno for partial throttle tuning.

 

I was tuning for the most area under the curve above the VTEC crossover. I didn't really matter though. I could gain a tad more peak hp at a slightly higher rpm but up until that it would be a good bit lower for at least 2,000rpms. My end result was basically the only option I had unless I just wanted to be cool and have 2 more peak hp for maybe 200rpm. Oh and it was a standard dynojet dyno.

 

then dont worry about it.

 

Trey - I've just talked to Brock over IM. I'll try to get a dyno day going in late March. It'll be just 3-5 of us to test-n-tune. Let me know if that sounds like something you're interested in.

 

When you spend almost $800 and are possibly making less hp than you did stock I sure hope I have the right to worry a little.

 

Sounds like you could meet up with Asahi and Cosworth. Don't know how far that is from where you're located in b'ama. Nice to see h-t members helping a fellow R owner out... I think Kenji is located in the Tampa, FL area.. Good luck..

 

seriously man, numbers do not matter unless you're at a dyno shoot out or something. sure its nice to have bling numbers to back up the $$$ you've dropped, but there are so many variances from dyno to dyno, hell you might put down 190whp somewhere else, theres just no telling. If the car runs well, the A/F is good, and the actual on road power is good, then i think it was money well spent. you said you picked up good midrange, which is killer IMHO. peak #s are for braggin, and i never understand why honda folks battle over them, when we'll never have close to the digits the Supra/Rx7/V8 boys have.


BTW- what bolt ons are you running? that could have a huge effect


[Modified by Rob :190:, 7:40 PM 1/23/2003]

 

Numbers do matter, Rob. So, I can make fun of your dyno numbers.

BTW, why do you have a picture of my gf in your avatar?

 

170whp/120wtq, what of it?

 

Yeah man, your power curver seems really good, like i said take it to the track again and see what you run, you might be surprised...

 

I'm game. I will have the datalogit for the power FC delivered monday.

 

AA, not be a cynic. But I honestly feel that you had a gifted stock motor that should have been left alone, thats just me. I know for a fact that 90% of all US ITR's run mid 14's stock, but the elusive 14.1-14.3 bone stock ITR's do exist and I think yours was one of them. Dont be surprised if you cant break 14.0 @ 99 with the Skunks. Best of luck in your tuning venture.