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boring factory fabric shrouds and make your engine bay stand out with the BRAND NEW GrimmSpeed Fender Shrouds for the 2015+ WRX/STI (sold as a pair)
Preforms voltage drop tests with included external leads
00 GPM) with less than 1-PSI pressure drop
The upgrade uses your factory electronic wastegate and diverter valve
exposing them to the coldest-possible incoming air while also making the filters still easy to service
aFe Large Bore-HD 2-1/2in 409 Stainless Steel DPF-Back Exhaust System w/Black Tip (49-42041-B) 1807 boring factory fabric shrouds andLarge Bore HD 409 SS DPF Back Exhaust System with Split Rear Exit (49 42041 B) by aFe. Exhaust System Type: DPF Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 2. 5". Exhaust System Sound: Moderate. Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Large Bore HD DPF Back Exhaust System. aFe dyno tests every system for maximum gains, and constructs them from mandrel
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