[Mike38]

What do you think about the possibility to increase the performance of the 20i to 30i version by chip tuning ?
Will this cancel the warranty on engine failures ?

[Balr14]

Originally Posted by Mike38

What do you think about the possibility to increase the performance of the 20i to 30i version by chip tuning ?
Will this cancel the warranty on engine failures ?

It is not difficult to increase the performance with a piggyback tuner, but serious performance gains require unlocking and changing the ECU. A piggyback tuner can increase boost and adjust some air flow and fuel parameters, which may not be all of the changes needed to bring a 20i to 30i specs. For that you would need to change the ECU and the lock is very difficult to break (depending on the model year). In the USA, the ECU has to be removed and sent to hackers in Russia (I believe). Just swapping for a 30i ECU may be possible and a better option. In any, it can be detected. It has been my experience that some brands and/or dealers are much more tolerant of tunes than others, with respect to warranty coverage.

These are just my experiences and I am not deep into the tuning and modding culture. In addition I live in an area that has very few shops that specialize in tuning German cars. Consequently, I'm stuck with mostly what I learn on my own. So, others are much more knowledgeable than I am. Your location may have significance as well. I believe there are more options available to the tuner in Europe than in the USA, for BMW B48/B58 engines.

[StanDiego]

Originally Posted by Mike38

What do you think about the possibility to increase the performance of the 20i to 30i version by chip tuning ?
Will this cancel the warranty on engine failures ?

Try using this forum's search tool. I seem to recall (in the past six months) someone with a 20i posting tuning results that showed power figures similar to the 30i.

[Mike38]

Originally Posted by StanDiego

Try using this forum's search tool. I seem to recall (in the past six months) someone with a 20i posting tuning results that showed power figures similar to the 30i.

I tried to find any thread but without success. Also searching form did not help.

[robsishere]

Managed this on MG Flasher Stage 1

[Amadeo]

Bmw Z4 30i B48 stage 1

[Highline-Autos.com]

Originally Posted by Mike38

What do you think about the possibility to increase the performance of the 20i to 30i version by chip tuning ?
Will this cancel the warranty on engine failures ?

Correct, you'd run into the possibilities of OEM warranty not covering drivetrain repairs.

With 3rd party warranty coverage you're less likely to run into issues because they would not be aware unless disclosed to them, and you'd still pass a visual inspection.

Trenton O. Gibson
tgibson@highline-autos.com
Highline Autos
Direct: 602.909.9216
Office: 480.348.0777

[Timdon]

I had me 20i remapped in the uk to just under 300BHP and better toque