Thee Black Mamba
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Which shop is best with dyno tuning our S550?
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I assume you mean Racer's Edge Tuning in Downey? Greg knows his stuff and I would highly recommend him. He tuned my Cobra, most of my friends' Cobras, and I think he put a Coyote swapped Fox in the 7's (I might be off though).The racers edge is one they recommended to me
They had good reviews on yelp wanna check it out of you like and tag mortor sports