Car put down 435whp on 15 psi with a Steve Kan tune. I witnessed this.

Took it to the track just to get a MPH reading to tell me where I'm at. I expected 120 mph traps.

Results; 13.5@111 mph.

Car ran strong, held boost (15 psi) perfectly. No misfires or hickups.

What could be the issue?

 

And yes, that Fiero almost drug me down the track.

 

You sure your boost was good? I bet you have a boost leak. If the car feels good, then maybe it was a timing problem (with the track timer)... maybe you should put it on a dyno to make sure. Your car should def be in the 120 mph range IMO.

 

Timing at the track was fine.

I'm positive the boost was good, I watched the whole way down and made some test pulls on the way home.

Hmm..

 

driver error?? XD

 

What is your setup no offense but whos to say that steve kan didnt play with the dyno?

i cant see any problems with your driving.

just to give you an idea.
i tuned an fd no long ago that made 346rwhp on 15psi with a gt3582r.

it ran 11.7@119mph.

 

oh man

 

pressure test for boost leaks. don't assume anything.

 

Sure doesnt sound like it was making good power.

 

Did you check water/intake temps? Could have been pulling a ton of timing if it was heat soaked. Did the car feel normal? Out of curiosity, what is your setup?

rx72c, Steve Kan is just a well known tuner that travels around and doesn't use his own dyno. You should know by now how skewed dyno's can be

thewird

 

Big street port, 3mm seals, ceramic rotors, msd ignition, T04R, blitz intercooler, wolf ecu, 16 switches

The dyno wasn't fucked with.

 

Its not always the tuner that plays with the dyno numbers. Dyno shops like to have 'kids" leave happy!

I dont think thats the case here. I think its lack of seat time and the numbers will get better as you get some more time in. I also never understand how anyone can go to the track and not crank the boost up and go for the gold....

 

Water was 82, AIT was 30's

Car ran smooth, no break up, rang it out to 7700-8000 with ease.

 

From my experience, the MPH is usually always there. MPH is the reason I went, I knew my ET would be ****. Trust me, there's nothing I could have done as a driver to bring that MPH up.

Help me find me missing 150 whp!

 

One thing, car was tuned 2 years ago. It's still running the same plugs as what it was tuned with. I figured since the car wasn't breaking up and acting ignorant, the plugs must be good.

Am I wrong by assuming this?

 

Wouldn't hurt to check them. That MPH is low for even 375whp let alone 50 more.

I would bet with the MSd on there that the plugs have been fried. Usually a powerful ignition will wear away electrodes quickly. If the numbers were made that long ago, there's alot that could've changed between then and now namely plugs and compression. Maybe its just wearing out a little...

 

Yeah, I'm seeing guys with 275whp trapping 112mph. So, I'm way way down on power.

If the plugs are ruined, wouldn't the car break up like crazy?

 

Yes and no. I've killed plugs running 16AFR on the highway for days on road trips. Car still ran and pulled clean, but once I slapped new ones in it pulled much harder. It may not be your issue, but its somewhere to start and easy to check.

 

Change your plugs, check for boost leaks and then go from there. Start with the easier stuff first.

thewird

 

About the boost leaks, besides listening under boost. Is there a better way? I have a mightyvac. Could I use that or is it not strong enough?

 

http://www.fighters-garage.com/rx7.html

Scroll to the bottom. There are other similiar devices. This is only one I know off hand. Or you could make your own.

thewird

 

to check for boost leaks: http://www.siliconeintakes.com/produ...e05e500c08da5e

Then add a 4" (or whatever size your turbo intake is) to 2.5" silicone adapter. Pressurize to ~40 psi, listen, and even spray the LIM/UIM and connections with soapy water.

Good way to make sure your silicone couplers won't blow off on the track too!

 

what plugs you running anyways, 9's all around?

 

Yes, 9's all the way around.

 

I would change the plugs. I had a similar problem wih my old 20b . Car ran perfect except slow as hell. Boost was fine. Changed the plugs and that did it. I am used tothe car idling like crap with bad plugs but the car idled fine.