I was thinking about getting a performance chip for my 86 325e. When I looked on ebay there are some chips that are $100 and some that are $40 and some that are $200. Of course they all look identical, but are they all ACTUALLY the same thing and some just cost more because it has a name brand...
I would like to add a little bit more punch to my '05 Z4 and I was trying to understand how the chip tuning is conducted and what potential problems can this upgrade cause.. My 2005 Z4 is in a very good condition mechanically speaking... However, then I am debating, if this was...
First post here.
I have a 2004 X5 3.0 Diesel.
I was recently approached by a guy offering to fit a performance chip/software.
It was the first I heard of them, so I did a search and found them very widespread.
What are the recommendations or warnings from this community?