View Single Post
      10-08-2012, 06:48 PM   #47
marv85's Avatar

Drives: '07 335i MT
Join Date: Jun 2010
Location: Portland

iTrader: (5)

Originally Posted by Ænema View Post
Basically, you log "Boost setpoint factor" and "MAF req(WGDC)" and then adjust the WGDC base table in the corresponding cells where the overshoots/undershoots occur. For over boosting i like to make adjustments(reductions) by a factor of 5-10%. For under boosts I go by a smaller value(2-5%) because as you increase the value the percentage increase grows each time. Increasing the WGDC adder table also works on under boost, but I kind of like using the base table.

My stock turbos are pretty healthy and not very picky so I haven't had to make a lot of changes. I have a set of TD04s on the way, when they get installed I have a felling I'm going to be spending a lot time in the WGDC tables haha
Thanks buddy
SOLD --'07 E90 335i, PTF COBB E50, HFS4, ER CP, ETS 7", AA DP, Vishnu Exhaust, DCI, ACT, Nitto Nt555

SOLD '10 E92 335i M, 6MT COBB v3, ER IC, ER CP, VRSF DP, Fuel-it st2, Mfactory LSD