Mr.Cool

iTrader: (2)

hey i bought an s4 na engine a while ago that dynoed about 180hp and i had already bought the guys ecu for this engine earlier(rtek2.0). problem is i dont have his old maps and neather does he. i have it setup to help me with emissions currently but im going to reset it to stock now and start tuning it. like i said, it made about 180 but it only feels like its making about 120 right now, if that. so where should i start? its an s4 engine with an s5 intake (theory's old engine if you knew it)

turbo2ltr

iTrader: (1)

What ECU is it running on now?
The current map is stored in the ECU and is easily extracted to be saved.

Mr.Cool

iTrader: (2)

its his exact ecu, i bought it for my old engine blew it up, then bought his engine now i dont have any of his tuning and nether does he. so i need to start from scatch.

turbo2ltr

iTrader: (1)

What I'm saying, if he tuned his car with the ECU you now have, the tune is still stored in the ECU. But I guess you are saying you tuned the rtek ECU on your engine?

Mr.Cool

iTrader: (2)

yes all old maps are looooong gone. its been writen over like 5 times since i got it.

turbo2ltr

iTrader: (1)

1: Get a wideband
2: if it runs lean, make an adjustment
3: if it runs rich, make and adjustment
4:?
5: profit!