Tips on tips..
A choice of a good exhaust tip is critical when it comes to Kw and Nm. NOT HA ha. It's all for looks, pick one that you like the look of and put it on.
My XE has a 2 1/4 inch dumper. Cause it looks good. If you want it to look trick, have two chrome tips coming out the same side. The XE having a square outlet two pipes look good.
It's up to you.........