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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > cobb stg2+ datalog help



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      07-29-2013, 10:30 AM   #1
gatorheel
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cobb stg2+ datalog help

first time datalogging w/ cobb. have some experience w/ jb4 and have done my research to hold my own.

map: stg2+ sport ST
mods:
ams fmic
er cp + tial bov
bms catless dps
drop-in filter

Note: Timing corrections: just changed plugs ...

Main questions per the logs 1 and 2:
1. Load_act: am I too far from target?
2. AFRs: settle to ~12.05 WOT .... too lean?
3. Timing: curves look alright from what i can tell...am i wrong?
4. Boost: ~18 tapering to 12.5psi ... isnt this a little high for stg2+ sport (16 to 12.5?)
5. Timing corrections (Run2): 1 multi-cylinder timing correction in 3rd @ 2200-3400 .... should i be concerned? right at onset of run, so no?

Also, regarding IAT...it was 85*/65%humidity during the runs. Considering I have AMS intercooler, should I be seeing temps this high? Thoughts?

Attached are graphs in Virtual Dyno and Zasquatch as well as csv data.

Any other analysis of my logs would be appreciated.

Thanks in advance.
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File Type: zip logs 1-3 csv.zip (38.8 KB, 6 views)
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Last edited by gatorheel; 07-29-2013 at 01:07 PM. Reason: add: intercooler comment
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      07-29-2013, 04:01 PM   #2
135Pats
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Its impossible to read this on my phone but

Thats right where you want it AFR wise. Def. Not lean.

Timing looks OK

Boost curve looks like a Stg2+ aggressive curve, but ive never run 2+ sport so the difference could just be more advance. Either way the taper is fine, just make sure you arent getting big boost overshoots.

Cant comment on the other stuff until i actually see the numbers
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