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Mike_L Mike_L is offline
Posts: 2,047
Join Date: Jun 2014
Car: 2021 M550i xDrive
Default 03-03-2021, 06:19 PM

Originally Posted by Mikeurbano1

Hey guys I’m new to this forum but not new to JB4, I had some questions I just turned my 2021 M550 and installed down ***** as well. I was curious on what map you think I should be running my vehicle on? Right now I am running it on map 2 but I think it can definitely get more power with a different map.. any help or suggestions would be great
This is actually G series, but I'd like to hear from Terry on this also. I've heard a few people with the N63TU3, 5, 8, and X series, saying that the gains were very underwhelming, which I don’t like hearing when they bought off my recommendation. Thinking the TU2/R firmware may not be optimized for the TU3.

I haven't installed my JB4 yet, waiting for the EWG harnesses, but considering how much the stock TU3 seems to like ethanol (I'm on my second tank of E25), E25/30 could really wake the motor up with a custom Map or firmware.

Mike Levy
2021 Tanzanite Blue II M550 xDrive
2010 Glacier Pearl Nissan Murano SL

Last edited by Mike_L; 03-03-2021 at 11:08 PM..
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