MagnaFlow Competition Series Cat Back Exhaust Subaru WRX / STI 2015-2021

Part #: 19361. The MagnaFlow Cat - Back Exhaust System is a game - changer. It boosts your Subaru WRX/STI's performance by adding more horsepower and torque. It also cuts down turbo lag and sharpens throttle response. This is achieved through smooth mandrel bends and larger piping diameter. You'll enjoy better gas mileage and a great sound across the entire RPM range. Its straight - through flow design is perfect for future upgrades that need a free - flowing exhaust. The system comes ready to install, with exhaust hangers welded at OEM locations, so no body or chassis alterations are needed for fitment. It also includes clamps and a pair of o - rings for a complete installation. Note: If you're using a stock j pipe or downpipe, the GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter p/n 077046 is required.

Using this MagnaFlow Cat - Back Exhaust System is easy. First, check that all parts are included: the exhaust system, clamps, and o - rings. If you have a stock j pipe or downpipe, make sure you have the GrimmSpeed adapter on hand. The exhaust hangers are already welded at the right places, so just fit it onto your Subaru WRX or STI from 2015 - 2021 without altering the body or chassis. Tighten the clamps and install the o - rings as needed. As for maintenance, keep an eye on the clamps to make sure they're tight. If you notice any strange noises or a drop in performance, check for loose parts. And remember, since it's designed for high - performance, avoid using it in extremely harsh conditions without proper checks. With proper use and care, this exhaust system will keep your car running great.