Peugeot 107 Fault Code After Chip Tuning

I have a 107, and something similar happened to me. I wasn't getting the promised performance gains after the chip install, and the car kept throwing codes. Did you use a reputable tuner, or a cheaper option? Bad tuning is like giving your engine a messed-up instruction manual.

Thanks. The chip tuning was indeed done by a less reputable provider, due to budget. Could you tell me the specific fault codes you encountered and what you did to fix it?

The code I kept getting was related to fuel trim; the engine was trying to compensate for something the remap had messed up. I took it to a proper workshop. They ran diagnostics, confirmed the tuning was the problem, and reflashed the ECU back to its original settings. Get it looked at by professionals ASAP for your engine's sake.

Thanks for the advice. I had the car assessed by a workshop. They confirmed the faulty chip tuning and recalibrated the ECU. The total repair cost was 180€.