Quote:
Originally Posted by bodaddy
I love my RPI ST Section 1! Biggest gains in midrange torque and peak Hp, with no loss throughout the band in either Hp or torque.
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What is RPI ST Section 1? Does it replace the secondary cat with their own version of race cats? Care to elaborate 
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07 M6 blk/blk
Custom headers
Secondary race cats
Eisenmann Race exhaust
Evosport Pulleys
BMC air filters
RPI air scoops
H&R springs
Brex White Rings
8000K Xenon
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