I got the cybernation kit and they will turn #s, as where the sfp kit looks great! Judging from seeing is beleiving-when the kit was first installed, the first dyno #s were 223 whp and after dyno tuning with the s-afc11 which sfp. does not supply my car made over 250 to the wheels, and now Im taking out v8s. I'm sure sfp has a great kit, this is just my experiance.
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