Well first off, I have an 04 evo 8 with a full works exhaust system. I decided to step on the gas a bit on a freeway entrance redling from 1st to 4th. On my shift between 2nd to 3rd something must have happened, and now my car seems that it's running without a muffler as its incredibly loud and much deeper. I don't have anything leaking and the car is performing the same as always, there are also no strange sounds.. Any idea what it could be?

 

You may have to post a video...this is gonna be tough to do guess work without hearing it.

 

Alright I'll get a video as soon as I can.

 

Thanks man. I'm sure it's an easy fix.

 

sorry that i never posted the video, but it seems that the problem disappeared for the most part. Strangely enough it only randomly happens, and not quite too often. I took it to a mechanic, and he said it was most likely that my exhaust got too hot and expanded to the point where the exhaust wasn't working as it should. I've tried to test it again, and it seems at redline it becomes and issue, but usually after 5 or 10 more minutes of driving, it resumes to its normal sound. I've left it as is for now, but if anyone has any idea what it could be, except for heat, please let me know, it's not that big of an issue though.