Well if you have a
Manual ecu with correct wiring loom, you say you have coil packs, airflow meter, I would check cat converter I'll have a better think about it and get back to you but I spose your right you probably
Don't need a tune im just saying of u had a power fc and a retune your issues would probably
Be fixed or atleast be more
Viable whilst tuning very hard to
Diagnose over the Internet with the provided info.