Don't quote me here but I believe it's when they cut out a portion of their exhaust to make it more free flowing. I run turndowns which would be similair and didn't notice any significant increase.
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00 GT, MAC Offroad H, Steeda Pulleys, Steeda Timing Adjuster, FMS 4.10’s, Flows w/turndowns, UPR shifter, UPR subframes, UPR adj LCA’s (not installed), Air Filter, Lakewood 70/30 & 50/50, Weld Pro Stars, Nitto DR’s, 253.8 RWHP/292.8RWTQ
Best on DR's 13.09@103.92 (1.81 60ft)
Best on ET Drags 12.91@101.93 (1.74 60ft)
M/M 100
88 LX coupe X-FHP, 12pt Cage, UPR K-member, 31 spline rear, full spool (For Sale)
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