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50 Posts
I know tune's make a huge difference and I'm hamstringing myself if I don't use one. But right now my Focus is brand new with a warranty and I want to keep that warranty. I read that Ford can tell when you've flashed the ECU, so even if I flash back to normal before taking it in, I'd still run the risk of losing warranty - correct?
So say I go with a FMIC and a CAI, what can I expect to see? I'm assuming the numbers won't be very high, but the cooler air has to count for something, right?
So say I go with a FMIC and a CAI, what can I expect to see? I'm assuming the numbers won't be very high, but the cooler air has to count for something, right?