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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 > 1-2 Shift Shudder WOT alpina flash



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      10-08-2013, 11:24 PM   #1
X.X.I.V
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So I've had my 09 335 for the last 1 1/2 yrs with procede and DCI, no issues, cars mileage at 70k. About a month ago I had the Alpina flash done....still no issues.
Last weekend I've put in DP's,FMIC, Chargepipe, Forge DV, and I had a walnut blasting. Later that day I upgraded to stage 3 maps and tested it out.
I have slowing building the adaptions back the last 2 days since ive had this all done, but yesterday and today I'm getting a shift Shudder, on the 1-2 shift in S mode only going WOT. I can't pinpoint if its overboost or trans issue like a double shift (1.................2.3.......... )
Again Car is good till I got all this new power. I did search but have come up with nothing so far.
I'll post a log tomorrow
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      10-09-2013, 12:15 AM   #2
Gemballa1980
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Plugs and or coils.

Since you're putting a lot more strain on the components, they're the weakest link.

Very common for these to fail once someone chucks a tune on - or has a more powerful flash / map.

Flash back to your previous map as a test and I think you'll find you won't be able to replicate the issue.
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      10-09-2013, 11:07 AM   #3
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It's not the Alpina flash... Before you start making assumptions, get the logs and see what's actually happening. If you need help, let me know.
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      10-10-2013, 05:19 PM   #4
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Log is here http://datazap.me/u/mario0573/first-stg3-fbo
Not an expert but it looks ok compare to others logs
Is it possible the DTC is detecting slip ?

Last edited by X.X.I.V; 10-11-2013 at 01:10 PM..
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      10-11-2013, 06:35 AM   #5
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link fixed

Last edited by X.X.I.V; 10-11-2013 at 01:11 PM..
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