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EVO 8/9 Cat-back Exhaust Install
The stock Evo 8 stock exhaust piping isn't too shabby at around 2.25" ID, but the muffler just sucks. Not only is it baffled like crazy, the exhaust piping enters on the side of the can and the muffler contains a valve which opens and closes. To get maximum reduction in exhaust back-pressure, we will be installing an RMR stainless steel cat-back system with a straight through muffler and 3" piping. [MORE INFO]
Downpipe Install
The stock Evo 8 stock exhaust piping isn't too shabby at with an ID about 2.25", but that's not as good as 3". In an effort to further reduce exhaust back pressure, we will be installing an RMR downpipe to match the RMR catback. While a 3" downpipe can be installed prior to a cat-back exhaust system, it should really be installed after or at the same time. Restrictions should be removed from the outermost point and then work your way in. There is no point in freeing up exhaust flow close... [MORE INFO]
Test Pipe Install
Even though the stock catalytic converter is a "high flow" unit, there is no way it flows as well as an off-road pipe (test pipe). An off-road pipe will both increase the pipe diameter to 3" to match your aftermarket exhaust and it removes the catalyst material, both of which open up the flow of the exhaust systems tremendously. In addition to the usual "off-road only" nature of off-road pipes, the removal of the catalyst will cause the rear O2 sensor readings to be off and the ECU will... [MORE INFO]
EVO X Cat-back Exhaust Install
Nice Cat-back exhaust system you have there. Bet you canít wait to install it. If you donít know how, then we got your Cat-back! As long as you have a 14 mm and 12 mm wrench, and anti-seize paste (can be purchased from Amazon.com and WEICON), youíll have your new Cat-back exhaust installed via this guide. [MORE INFO]
EVO X Downpipe Install
Having an aftermarket downpipe is always good to have, especially if you modified your EVO to run at a higher boost pressure, or if itís already modified in such a way. This is setting aside the fact that, as most of us know, aftermarket downpipes improves performance. Got a new downpipe and arenít exactly sure on how to install it? This guide will take downpipe installation down the pipe! To save you time, and trouble, itís important to know/keep in mind that a majority of 3Ē downpipes donít... [MORE INFO]

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