I have a 2.7 with seta pistons, Bimmerheads 885 head with dual pattern cam, racing dynamics headers, cat back exhaust, and #17 injectors. I'd like to get it tuned so it runs optimally. Someone suggested using a miller war chip but from what I've read people seem to find them unreliable. Mine is a daily driver so unreliable doesn't work for me. Anyone out there have experience with using the miller war chip or want to suggest an alternative?
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