TPIS airfoil
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From: Beautiful BC
Car: '88 IROC-Z / '91 Z28 / '91 GTA
Engine: LT4 Hot Cam 305 / L98 355 / MR 383
Transmission: 5-spd / 700R4 / 700R4
Axle/Gears: 3:45 / 3:23 / 3:23
TPIS airfoil
just got one the other day and installed it.. isn't the airfoil supposed to be smooth?? the one I got is rough.. kinda like sandpaper. just wondering..
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
Eh, its just there to direct the air into the throttle body bores better. Hit it with some sandpaper if you want.
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