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Personally I would pick JB or COBB. Think from the point of proven performance the JB3/4 with all the top 135/335 N54 & N55 stock/RB turbo cars at Drag Times speaks for itself with out a lot of X "feels" faster than X. For COBB a Protune, not sure of the cost, by Dzenno looks to be the pick of the litter.
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Kevin
Dravit Gray, Black Leather, Moonlight Roof, Red Calipers
2022 M4C - 2020 Z4 M40i - 2023 FORD Expedition XLT Max 4X4 400BHP - 2009 V-Star - 1998 Ranger 4X4 5MT - 1965 Cobra (R) 5MT - 2023 Jeep Wrangler Sport S 6MT |