Engine swap base maps and tuning haltech elite 1500

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.

I found myself in an almost identical situation with a motorbike engine in a buggy with an elite 1000. The guy didn't touch any base tables, just turned on short and long term fuel trim.

Without modifying the target lambda table the fuel trim was always aiming for lambda 1 with the trims adjusting the base to achieve this. The engine ran, was a bit thirsty on fuel and by my estimation, a bit gutless.

I thought I could do better. I changed the targets in the lambda table to a bit richer and did some paddock tuning with the dataog. By bringing up the STFT, throttle position and wideband reading in the dataog I quickly and easily the tuned the fuel base table and the buggy ran WAY better.

My suggestion is, save the original tune that you currently have because you know it starts and runs. Name it something like ORIGINAL so you can search it if you lose it

Then change things.

If it gets worse you can always return to the ORIGINAL, just don't save over it.

If you've done some of the courses you'll have a general idea on what you have to do and this forum is FULL of people that know a lot more than I do.

THEY WILL HELP YOU!

I figured it was mine and if I ruined it I could just fix it. I didn't ruin that particular one, however I have had to revert to the original tune before. But I've since learned what I did wrong and it hasn't happened again.

Nobody is stopping you but you and you have all the help right here that you could ever need.