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Looking for some help on what i think is a tuning issue on my 2019 STI.
Current relevant mods:
Cobb SF Intake
KillerB Hard Turbo Inlet
IAG AOS
MAP Downpipe
Cobb FMIC
Speed Density
TIAL BOV
EVAP Delete
PCV Diagnostic Connector Delete
Dimemod 2.0
The Issue:
First off, the car seems to only exhibit the following issues after it has completed one start / stop cycle. If i reset the ECU or the first start after flashing a new map, the idle does not seem to exhibit these behaviors.
I am seeing high/erratic idle, ~1100-1200, with occasional surging up to ~2500. This typically occurs while the car is in motion, and once stopped the idle drops down to the ~700. Sometimes the idle will not drop all the way and remains at ~1100. When the idle is incorrect, i do notice throttle plate angle readings seem to correlate with the rise and lowering of the idle.
Its especially apparent while doing something like driving through a parking lot, the car typically spends them majority of the time over 1k RPM.
Can you post a data log please? I’d be curious to look through it and see what you’re seeing, and maybe there’s something in there that we can use to help.
