SOLVED: N54 Oscillating throttle position/surge at steady speed

jadams161 · 09-29-2022, 12:46 PM

You absolutely can get the oxygen sensors to complete for inspection. You have to flash to MHD V10 Stage 0 tune and select your necessary options (catless, tmap ect.). Then do a proper drive cycle. I just did this this week and everything set except catalyst. It took a few days for Evaporative system to set. Need to be under 3/4 tank of gas.

Scooternjj · 04-17-2024, 09:22 AM

I have been dealing with the same issue of lunging at steady speeds. My 08 335 is completely stock with no tunes. I have replaced the coils and plugs and just completed a walnut blast of the intake valves. Ran great for about 20 minutes after the walnut blast and now is back to lunging. So far I am not getting any codes to show up. Any ideas would be greatly appreciated. I am new to the BMW family.

09-29-2022, 12:46 PM	#89
jadams161 First Lieutenant 171 Rep 340 Posts Drives: 2009 E93 335i. 2011 E90 328xi Join Date: Apr 2021 Location: Upstate New York iTrader: (1)	You absolutely can get the oxygen sensors to complete for inspection. You have to flash to MHD V10 Stage 0 tune and select your necessary options (catless, tmap ect.). Then do a proper drive cycle. I just did this this week and everything set except catalyst. It took a few days for Evaporative system to set. Need to be under 3/4 tank of gas.
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04-17-2024, 09:22 AM	#90
Scooternjj Registered 0 Rep 1 Posts Drives: 2008 335xi Join Date: Apr 2024 Location: Kansas city iTrader: (0)	I have been dealing with the same issue of lunging at steady speeds. My 08 335 is completely stock with no tunes. I have replaced the coils and plugs and just completed a walnut blast of the intake valves. Ran great for about 20 minutes after the walnut blast and now is back to lunging. So far I am not getting any codes to show up. Any ideas would be greatly appreciated. I am new to the BMW family.
	Appreciate 0 Quote