Quote:
Originally Posted by georgez949
Race chip I had a problem with the plugs, contacted support never replied. only replied with some bull shit and never actually helped me.
Jb4 was decently good but didn't really give me that big of a performance boost even on 105 octane and on the corresponding map for it
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I agree with you as far as Racechip. I didn't see much difference that's worth something going wrong and possibly having a warranty issue. Contacted customer service to see why I don't see much of a difference in power and they didn't get back to me til after the 30-day return policy. I had a problem with one of the plugs as well, could not remove the Racechip plug from the BMW plug, had to get a mechanic friend to help and he had a hard time.