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M
It really boils down to what sound you want. Slight rasp with X, slight rumble with H. The performance gains of each are so minor it...
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A local shop, Nextgen, ran a Dyno Day for Mustangs in Northern California this past Sunday. Cost was $50 for 3 runs (reg. $100-$180)...
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A local shop, Nextgen, ran a Dyno Day for Mustangs in Northern California this past Sunday. Cost was $50 for 3 runs (reg. $100-$180)...