I will replace the Rear Bumper cover with a RA bumper, (heard the EVO bumper is not bolt on??) Not worried about modifying the muffler, I know the intake flange needs welded, and the outlets probably need changed width wise to fit that bumper...

Any one think I will lose Back Pressure? Or Anything detrimental?

 

dont have any idea about this. good luck and post pics

 

because the evo x muffler has a spring loaded flap inside that opens off pressure, you may loose HP because you lil motor might not make enough back pressure to open the valve.

 

it wont fit anyway, the gap on the RA bumper and evo bumper are in different spots, it simply wont bolt up to the RA bumper. the evos exhaust is more spaced. somone has tried it already.

 

I can change the position of the outlets.. correct? extend/reposition them?

As for this flap, I had no idea. To bad Ive bought it already, all well all is good. I can probably remove it, (ie. break it off haha.)

I still havent found a bumper, so on the cheap I'm thinking Bumper Lip, with spacing for 2 exhausts? Plus someone has to get it to work, and if im the one. I'll be glad. Plus the price on the muffler, I couldnt pass up.

 

the exhaust is too large and you will harm flow. If your exhaust doesnt flow, it cools quickly and expands, making it even harder for your engine to push it out the tip.

DO NOT PUT AN EVO X Exhaust on a Lancer. You will age your engine and possibly damage it because of it working hard.