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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 > Can someone interpreter my datalog?



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      02-11-2010, 02:25 PM   #1
cocoturkey
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Can someone interpreter my datalog?

Can someone interpreter my datalog? i'm running stage 4+, and i have no idea why my boost decreased from 17psi to 10psi after 5,500 rpm on 3rd and 4th gear... my boost did not decrease after 5,500 rpm on 2nd gear. it's' really weird... shiv must be very busy right now since he didn't have the time to reply my e-mail.... I don't know if this is what it's supposed to be or not... i'm seeking for your opion.

i love v4 stage+ very much... it's extremely smooth and runs great!!!!!





my mod list: v4 stage 4+, ar design catless downpipes, aa fmic, modified ar design oc, ams full catless exhaust, dci, shiv meth kit (80% meth + 20%water) on octane 98 ( = 95 in the US).
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File Type: zip datalog.zip (24.7 KB, 61 views)

Last edited by cocoturkey; 02-11-2010 at 02:45 PM..
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      02-11-2010, 02:27 PM   #2
enrita
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where is the datalog?
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      02-11-2010, 02:27 PM   #3
cocoturkey
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attached...
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      02-11-2010, 03:18 PM   #4
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I can't view the csv files you sent me because I'm traveling and living off the iPhone. But the pics u posted look fine for a 6at. You can view 'boost set point" to see boost targets and how they compare to boost.

The 6at maps taper off boost above 6000rpm in preperation for the upshift. For max accel, you want to shift manually at ~6200rpm. Taking it to the autoshift point (7000rpm) like you did in the logs is unneccesary.

Last edited by OpenFlash; 02-11-2010 at 03:32 PM..
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