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I have a chance to save a lot of money on a tuner, found an SF3 brand new..
now my car is already modded so the 'pre-tunes' on the SF3 will be useless.. but other than that does anyone have any experience with either/both of these tuners, I'm wondering if I need to spend an extra $150+ on the X3 if it is exactly the same as the SF3?
now my car is already modded so the 'pre-tunes' on the SF3 will be useless.. but other than that does anyone have any experience with either/both of these tuners, I'm wondering if I need to spend an extra $150+ on the X3 if it is exactly the same as the SF3?