Originally Posted by JWHyperBlueSTI
I really liked my COBB TB pre KB ELH. It had the perfect sound for me but once I switched out the header, it started droning for me and eventually pushed me over to finding something as quiet as possible without going back to stock. I'm actually pretty happy with the sound from my Milltek.
That's weird. From what I've heard the Cobb is one of the few exhausts that's supposed to play well with the ELH, like your Milltek.