No. Linear throttle will do nothing for you. Good luck and keep us posted. Dont go WOT until issue solved.
N54 bank 1 runs lean and rich
- Thread starter Templedakota
- Start date
Guys, are my do my logs show that my turbo is blown? I haven’t upgraded to MSD81 yet. But I want to make sure before I start dropping more money.
Nope. Just stage 0. Stock tune. There are several logs on this thread. Starting to think a turbo is blown or ECU is bad. Would a blown turbo cause 1 bank to misfire? -34 fuel trim on bank 1? Iv just about given up on this car guys. I need someone that knows what they are looking at to look at my logs.
Logs will not tell what part exactly is broken. It can indicate different things and you need to rule out what makes sense the most. If you have flashed the car with MHD Stage 1 show us the log please.
Hmm... if the rotating assembly in the turbo froze up, then the turbine would be a restriction in the exhaust path. If exhaust can't get out efficiently, charge air can't get in efficiently. Maybe that could mess up your trims??? But that charge air should still be getting metered, so that probably doesn't make much sense. Plus it doesn't explain that you still feel full power before it warms up.
If I understand correctly, you describe these various problems as sometimes present, sometimes not. You note the engine runs fine at first then drivability issues of several types appear, plus you have a changing set of fault codes that most recently included a series of PT-CAN bus communication errors involving the DME. The intermittent nature of these things is not typical for a failed turbo or a failed DME but could indicate an electric connector problem. In any case, I cannot come up with a reasonable hypothesis for how a turbo problem could result in this constellation of issues.
Since the problems occurred after driving through deep water, have you checked the DME the box for water entry? Have you removed the DME connectors and looked for corrosion?
Since the problems occurred after driving through deep water, have you checked the DME the box for water entry? Have you removed the DME connectors and looked for corrosion?
After a couple months, I finally figured out the issue… clogged bank 1 secondary cat. I did a secondary cat delete and now the car runs better then it has ever. This is my first time driving the car since I put on the catless down pipes. Damn, it honestly feels like she gained 50 hp. Still haven’t tuned the car yet. Only issue now is that she smokes like a chimney. I think I’ll deal with the smoke until the turbos completely give.
