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      11-03-2023, 11:43 AM   #14
PMW0801
Second Lieutenant
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Drives: BMW M4
Join Date: May 2022
Location: New Jersey

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Quote:
Originally Posted by Hendo741 View Post
Map 3 is an additive E30 map. Definitely don't run that with 93. Map 4 is also listed as an E30 map, but its not nearly as aggressive as Map 3. It shouldn't reset to map 0 when turning off the car either.

Maps 1-3 are additive while map 4 and 5 are absolute. 1-3 just add boost to the ecu target, whereas 4 and 5 change the target. Map 6 is a custom map that you can make changes to.

Logging and sending to BMS is the right answer though. They'll get you sorted.
Thanks for the insight. I will do some logging and send to BMS before running any other MAP than 2. The only time my MAP changes is when I am away from the car, lock it and then get in it. I think there is a setting in the JB4 app to keep it set to the last MAP I ran but I think I don't have that checked off.
Appreciate 0