Exhaust Question
Thread Starter
Junior Member
Joined: Jul 2018
Posts: 35
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2014 C63 507
Exhaust Question
2014 c63 507 thinking to do secondary cat delete xpipe and res delete. Been told two things I need clarification on.
Will this effect performance at all? Gas mileage? Anything else I should know about? They’ll be stainless steel I’m keeping the factory mufflers on
Will this effect performance at all? Gas mileage? Anything else I should know about? They’ll be stainless steel I’m keeping the factory mufflers on
Senior Member
Joined: Feb 2018
Posts: 339
Likes: 108
From: Virginia USA
2016 GTs, 2014 C63 AMG and 2014 C350 Sport (wife's car, she thinks it's an AMG - shhhhhh)
Lots of threads on this topic.
I think (without invoking the header crowd) that the consensus is Mike's Power Pipe + Rez and 2nd Cat delete is the best way to open it up without making it obnoxious. Most guys will tell you to avoid the x pipe. You are messing with the back pressure and not adjusting your tune so HP and mileage gains are hard to predict and minimal - you could even lose HP with the loss of back pressure.
Search the threads.
I think (without invoking the header crowd) that the consensus is Mike's Power Pipe + Rez and 2nd Cat delete is the best way to open it up without making it obnoxious. Most guys will tell you to avoid the x pipe. You are messing with the back pressure and not adjusting your tune so HP and mileage gains are hard to predict and minimal - you could even lose HP with the loss of back pressure.
Search the threads.
