Embarrassing night at the track. Missing a ton of HP. Ideas?
03-30-10, 10:24 PM
#1
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Embarrassing night at the track. Missing a ton of HP. Ideas?
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?
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?
03-30-10, 11:03 PM
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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..
I'm positive the boost was good, I watched the whole way down and made some test pulls on the way home.
Hmm..
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03-31-10, 06:58 AM
#10
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
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
03-31-10, 08:47 AM
#12
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....
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....
03-31-10, 08:47 AM
#13
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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
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
Car ran smooth, no break up, rang it out to 7700-8000 with ease.
03-31-10, 08:50 AM
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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....
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....
Help me find me missing 150 whp!
03-31-10, 09:01 AM
#15
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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?
Am I wrong by assuming this?
03-31-10, 10:14 AM
#16
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...
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...
03-31-10, 10:31 AM
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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...
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...
If the plugs are ruined, wouldn't the car break up like crazy?
03-31-10, 10:52 AM
#21
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
Scroll to the bottom. There are other similiar devices. This is only one I know off hand. Or you could make your own.
thewird
03-31-10, 12:04 PM
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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!
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!
