Wondering if there are any exhausts for sale that have re packable mufflers. I had a Greddy SE dual and am interested in buying another one but I am a little worried. On my previous Greddy SE dual I did a few track days. By the end of each event the inside of the muffler had turned bright white from the heat. I noticed that after a few events the exhaust had gotten much louder.

I had my eyes on the Ap2 Mugen exhaust as well and it looks like you can drill out the rivets on the muffler to replace the packing. I know a few companies that make exhausts for Lotus's use re packable mufflers. The packing material is about $30 and you can use different combination of material to change the level of sound absorption.

 

you can re-pack any muffler by cutting it open, repacking, and welding back together. I did it with my j's 60rs.

 

Trying to avoid having to cut and re weld.