best chip for '90 325i?

[M20power93]

I'm looking to get a good chip (not e-bay) for my 325i, What's the best one to get that doesn't require tuning and I don't have to change the injectors. I was looking at the 91 octane Mark D chip..

[devon.818]

Mark D chip best bet.
send him a PM and he'd probably point you at the right product

[CoClimber]

I run that chip. You won't notice huge gains as the stock tuning is already good but I did feel a difference in mid rpm and the higher rev limit is useful when you are autocrossing.

Bottom line is that I would recommend it.