Is my car healthy? 2010 535xi 50K mi

[marseille]

Noob/First Post. Trying to learn how to interpret my logs.

Data Logs:

datazap.me | marseille

datazap.me

All done within last 250 miles:
MHD v8 Stg. 1+ 93 Oct
xHP Stg. 3
DCI
BMS Chargepipe w/ Tial BOV and vacuum adapter
VRSF 7.5 Race IC
Stock DPs -> 2-1 merge into 3in single -> Vibrant resonator -> 3in Straight Pipe -> Vroom Vrooom
Denso CP
NKG 95770 @ .022
BMS PCV Valve
BMS Oil Cooler Sport Valve
Oil, Trans, Diff fluid changes

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[doublespaces]

I'm no tuner.

The only thing I noticed is you have a decent throttle closure and your short term fuel trims have a moderate deviation:

 

[marseille]

Throttle closures at WOT related to over-boosting or DSC being active? Feel certain I pressed and held DSC for a few seconds and target vs actual boost appears ok? Other causes?

I don't have any codes. Not sure which injectors I have. Also assume my intake valves haven't been cleaned.

 

[typedRew]

mhd v8 maps always have throttle closure for me, think they just intended to have them overshoot target boost for guys who had trouble meeting targets before due to worn out equipment, imo

only time you really notice is in logs, i never feel it

 

[marseille]

I put it on the dyno today and the first pull didn't have throttle closure. The second pull was loaded at 10% and had throttle closure just past 4K for 20whp less difference from there to the top.

What causes STFT's to be out of sync > 5% ?

 

[typedRew]

injector or o2 sensor wear, thats a pretty minor difference, i wouldnt worry about it or the throttle closures. itll only do that to bring boost back under target

 

[marseille]

thanks for the feedback.

 

[doublespaces]

I had an STFT deviation by about 7-10% and I had a bad cyl 6 injector. Had a rough startup though.

 

[marseille]

DataLog

Flashed 2+ E30 and installed a 3.5 TMAP. Do I need a custom tune to target above 18.5? Would a custom tune also get rid of the choppy boost curve and throttle cut? Throttle cut seems to come in right when the actual load is near the load requested.

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[marseille]

Looking into replacing vacuum lines and boost solenoids to eliminate boost oscillation. Will cleaning the intake valves also help? Going back to MHD 7.1 appears to have eliminated the throttle cut issue.