has anyone heard either an ac autotechnic kevlar canister muffler (or any ac muffler) or an e's tuning systems oval muffler? those are the two i'm currently looking at but i want a good deep tone without any buzz. i've had an obx and magnaflow and they both have buzzed.

 

i dont know the brand ive always used magnaflow and they havent had any problems, buzzing can also be caused by bad piping or resignators which may be the issue, my magnaflows have all lasted at least 3 years without any issues, so pretty reliable. never used obx, my set up is zc with dc sports header coming down to a universal cat, no resignators back to magnaflow muffler. and 2 1/4 piping all the way back from the header. good luck with whatever u decide

 

i had a b18a with an hp racing header and 2" piping back to a magnaflow and i had a buzz at like 1/2 to 3/4 throttle, but under or above that it sounded good. i think i've decided on a jic magic bullet universal unless i hear good about the others.