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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Boulder dyno day, ONLY 278WHP with procede?



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      02-20-2007, 12:11 AM   #23
schneid4323
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Originally Posted by shiv@vishnu View Post
Mike, what you are describing hasn't been reported by anyone else or seen by ourselves over 10k miles of testing. I know you reverted your bypass valve setup back to stock after the dyno day so you might want to pressure test intake plumbing. You'll be surprised how big of an effect just a tiny leak in the signal line that goes to the top of the bypass valves will have on how the car runs. As for the ECU trying to compensate for the PROcede... it really doesn't work that way. Just as long as you use the appropriate gas, the ECU will not dial back timing (and lose power). Also, you reported that switching the PROcede map helped regain power temporarily. This does not make sense because the map you loaded was essentially the same as your original map (and the same map that everyone else is running). So I suspect the problem lies elsewhere. I'd really like to see a dyno chart of your car in low output mode and see what it is doing. Perhaps that will reveal the cause of what you are describing.

shiv
I understand what your saying completely, it is just odd how my car, as described by Alex@creative is "losing power by the day". Today i had total turbo failure for no apparent reason and it felt weaker then the day before, which felt weaker then the day before that, sorta like what happened before i reloaded the map, (Im not crazy people have witnessed this). What temp should it be running at by the way? As far as turbo leak, we looked today and I will continue to look until I am 100% positive there is none. I tried to log a couple quick runs up the freeway with the PROcede software, but for some reason it recorded everything but boost???? which seemed very odd why just that wasnt working. Any ideals what I should go about doing?
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      02-20-2007, 01:15 AM   #24
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Originally Posted by schneid4323 View Post
I understand what your saying completely, it is just odd how my car, as described by Alex@creative is "losing power by the day". Today i had total turbo failure for no apparent reason and it felt weaker then the day before, which felt weaker then the day before that, sorta like what happened before i reloaded the map, (Im not crazy people have witnessed this). What temp should it be running at by the way? As far as turbo leak, we looked today and I will continue to look until I am 100% positive there is none. I tried to log a couple quick runs up the freeway with the PROcede software, but for some reason it recorded everything but boost???? which seemed very odd why just that wasnt working. Any ideals what I should go about doing?
To test for a turbo leak, you will have to do a pressure test. Looking for it any other way just wont cut it. As for loosing power by the day, could you do a dyno test to confirm this? The last dyno of 315whp and 350lbft of torque isn't exactly anything to worry about. Especially when conducted on another dyno by another operator in different conditions. As for logging, we haven't released any directions yet so its no surprised that you could log boost. To log it, you need to go to Channel Setup and select MAP. It will be displayed in PSI. The LOAD gauge on the main screen is also directly proportional to boost pressure. At atmospheric pressure (0psi), it will read ~40%. At 70%, it'll be around 12psi. I know you are concerned about your car but please understand that what you are describing has nothing to do with the PROcede. If you weren't hitting your boost targets, for instance, you would be throwing a CEL. The stock computer really does have a firm grip on how things are working. If there are any quantifiable changes, it'll tell you.

-shiv
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