Max Boost Block?

[mlacava17]

Hello all,
Recently have notice an extremely consistent max boost of 18.7 on all of my runs. Haven’t had the chance to log anything but no matter the conditions, roll, or dig, I always seem to max boost at about 18.7. This however was not normally the case. I’ve been running JB4 map 3 e30 for about 6-8 months and have seen varying boost levels in different conditions. I suspect the dealership could have something to do with it as I just had it serviced about a month ago. Maybe not I have no idea but that’s my only guess. I will be finding some time to do logging to see what the technical “problem” may be but any help or guesses is appreciated!

 

[rpoffen]

Hello all,
Recently have notice an extremely consistent max boost of 18.7 on all of my runs. Haven’t had the chance to log anything but no matter the conditions, roll, or dig, I always seem to max boost at about 18.7. This however was not normally the case. I’ve been running JB4 map 3 e30 for about 6-8 months and have seen varying boost levels in different conditions. I suspect the dealership could have something to do with it as I just had it serviced about a month ago. Maybe not I have no idea but that’s my only guess. I will be finding some time to do logging to see what the technical “problem” may be but any help or guesses is appreciated!

What IAT's (Intake Air Temperature) are you seeing (jb4 logs this). I had high IAT's, even with the BMS intercooler, and Terry walked me through IAT spoofing (which is talked about in the n54tech forum).
You should also see what timing corrections you are getting (ign2 through ign6) in the logs, anything over 3 might mean your fuel is not as good. as you think.
If you have high timing corrections, Sometimes the ECU gets learned parameters that make it pull timing for no reason, try disconnecting the battery for a few minutes so it clears out those adapted settings.

 

[Terry@BMS]

For tuning advice you'd want to post a reference log.