I'm trading in my Speed 3 and getting an Evo X. I had a WRX before the Speed and missed the awd too much and had to come back. My questions are about the Evo X exhaust.

I want to do a few mods to the car because stock the Evo X wasn't as quick as my slightly modded Speed. I'm thinking intake and downpipe/testpipe with a tune. I'm new to the Evo scene so I'm looking for opinions. I want to be able to pass emissions if possible. Can the downpipe be catless? Should the test pipe have a high flow cat? Will I need a mechanical fix for the O2 sensors? Can a tune fix the CEL? Is the Cobb Accessport a good option for the X? I have it for my Speed and I like it and have good results from it. Will the Accessport clear the CEL? Thanks!

 

most down pipes wont gain hp or tq for the X

 

Welcome to the board! There is plenty of good info regarding all those questions you have, just search around a bit. Spend a few days reading and I think you'll have the answers to all your questions plus know many other things.

 

welcome aboard, we have some staged upgrades planned out for the X www.mellontuning.com that should give you some ideas. We recommend a custom tune over the Access Port canned tune.

 

Please utilize the search function. It is a sensational tool.