Anyone ever switch the just muffler on their 2-1 system to an E- series? I've got a basically stock TC88 (stage 1) with a Pro Pipe and was wondering if the E-series muffler on the V&H headpipe would be any noticeable improvement or am I just pi$$ing money away.

 

I have an E series muffler on an pro pipe. Put it on to cut down noise, especially when pulling a trailer. I can’t say that it has more power, but the motor runs really good with it. I do have auto tune which did make corrections after I installed it. If you have an older pro pipe with the 2” outlet you will have to make an adapter and install the heat shield. I had a local muffler shop make the adapter for me.