Both are really good to deal with. With that said go with Brenspeed. They do dyno tunes as part of their business and know how to write a decent tune.
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2008 GT/CS 5 Speed
Control Arms, Prothane MM's
Aluminum DS, McLeod RST/Fidanza FW
FRPP Ceramic Shorties
FRPP Whipple HO 488/452 RWHP/TQ
Forged Rods and Pistons
Whipple Crew
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