View Single Post
      03-12-2011, 07:14 PM   #4
Forced Induction FTW!
roninsoldier83's Avatar

Drives: E90 BMW 335xi N54 6MT
Join Date: Oct 2010
Location: Denver, CO

iTrader: (1)

Originally Posted by View Post
Makes sense given how map5 is programmed. If you're seeing timing drops map5 will continue to lower it's boost target until they subside or it hits the floor at 11psi. At elevation the factory boost target is around 10psi, and you're seeing drops there as well, so map5 is just going to drop down to the min level. In situations like yours (high elevation / poor gas) richening up the air/fuel ratio can help. It's under user settings.

Yeah, I'll be playing around with fuel and timing settings (as well as boost obviously) when Cobb releases an AP & ATR support. I considered playing with the A/F additive table, but didn't want to touch anything in order to show what the OTS maps would look like in comparison to each other.

Under my local conditions (high elevation & 91 octane), I'm sure you can understand why I've always been a big advocate of custom tuning.
E90 BMW 335xi 6MT N54 - SOLD
Kawasaki Ninja 650R - Play Toy
Former cars: 2009 Infiniti G37x, 2006 Subaru STI, 2006 Mazdaspeed 6, 2003 Nissan 350Z, 2004 Subaru WRX, 1991 Toyota MR2 Turbo, 2nd Gen DSM & 1990 Mazda Miata