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A little background information: 2015 subaru xv crosstrek with an EJ205 turbo swap from a 2002 WRX. Haltech Elite 1500 ECU.
I had the engine tuned by a professional tuner. he ran it on a dyno, and had me confirm the tune via real world street driving and sending the log back to him for comparison. After everything was done and he said I'm good to go i was having small idle control issues. i got curious about the tuning process so i took the EFI tuning fundamentals course, understanding AFR, and practical standalone tuning. i then compared his final maps to the original base maps supplied by the NSP software and i notice that ZERO changes were made to the target lambda (AFR), and ignition timing base tables. Im a little concerned i may have gotten ripped off by a lazy tuner.
the car runs seemingly well but has relatively poor fuel economy. And continues to have rough idle characteristics. I am thinking of restarting the whole tuning process and doing the job myself now that i have some decent knowledge but zero real world tuning experience. Wanted to get yall's take on the matter and can provide more information if necessary.
