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Hi guys, I am about to get my 1 7/8" headers & 100 cell cats installed soon on my 2017 S550 which currently has Roush ACTIVE axle backs & stock suitcase resonator. I am assuming because of the Roush axle backs it will still be pretty damn loud (want to keep the axle backs because of the active...

Hi guys, Car has been supercharged for about 7 months now (Edelbrock 2300 blower) Since changing from 5w30 to 5w50 oil weight (I think about 2 months ago?) I have had the below issue. After starting the car since its been sitting for about 1 hour (from a small drive to the shops) the car...

Hi all, Who has the stock poorly designed RHD headers and is supercharged? Ran into any issues or see any dangers? I’ve heard high Exhaust Gas Temps may cause engine failure if on a supercharged car due to restriction etc. I plan to leave them on my daily driver since it’s already insanely...

Hi guys, Who has the stock poorly designed RHD headers and is supercharged? Ran into any issues or see any dangers? I’ve heard high Exhaust Gas Temps may cause engine failure if on a supercharged car due to restriction etc. I plan to leave them on my daily driver since it’s already insanely...