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

Drives: '08 E90 335i MT
Join Date: Jun 2010
Location: Bay Area

iTrader: (6)

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
'08 E90 335i, MT, VRSF 7" HD, VRSF CP, Fuel it stage 2 LPFP, CSF radiator, more on the way!
'16 MK7 GTI DSG, bone stock
SOLD '10 E92 335i M, 6MT COBB v3, ER IC, ER CP, VRSF DP, Fuel-it st2, Mfactory LSD
SOLD --'07 E90 335i, PTF COBB E50, HFS4, ER CP, ETS 7", AA DP, DCI, ACT, Nitto Nt555