Hi there,

I am new here and I am looking for some advice from people with first hand experience with chiptuning of a 530dA (218bhp version without soot filter).

I am considering an AC Schnitzer chip, but also read about people with good experience with other suppliers like KMS or Kempower. What is your experience with a tuned engine? Important things for me are:

1. Power/Torque and driveability
2. Reliability
3. Warranty issues
4. Fuel consumption

I live in the Netherlands, so feedback on tuners from the Netherlands, Germany, Belgium and the UK are most valuable to me.

Appreciate your feedback!