cpeters1928 Posted May 15, 2016 Share Posted May 15, 2016 So I have been considering installing the M4 slip on exhaust because I have heard great reviews about it and they price point isn't too bad. My question is if I was to install this do I need to get a power commander as well? Will the performance change that drastically? Also, I have also seen the EJK Kit. Was wondering if they have a tune for this exhaust and if it's worth it? Does it really make a difference? Link to comment Share on other sites More sharing options...
foxk56 Posted May 15, 2016 Share Posted May 15, 2016 Take a look at the post I made (search my profile) called simple exhaust options. I had roughly the same questions, the responses there should be what you're looking for Link to comment Share on other sites More sharing options...
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