As long as not going long tubes as then the tone gets way too trumpety with the Xtremes. I ultimately cut off the Corsa mufflers but kept their double x mated to ARH long tubes and added AWE Touring rear section. My favorite combo on this build so far. Still screams up top but with more character in the lower rpms and none of that trumpety tone.
Things like drone are very subjective, some people have 0.0% tolerance for any. I can tolerate a minor drone that doesn't require me to shout for passengers to hear me, or to where I have to turn up the stereo to a stupid volume to block it out. I think my average listening volume went up 3 levels during a highway cruise. My friend's 08 GT has a Magnaflow system on it that's basically open chambers, and it drones way more but is far less loud than my setup. Her car I couldn't tolerate if I drove it all the time.
I mean I do have an 11 but I have LT's, offroad h and res delete with extremes and have no drone. I have a small amount if i go 90+
Oh ya no doubt Corsa nailed it on no drone just wasn't a fan of the trumpety tone after adding long tubes when accelerating.
I recently installed the completes Xforce header and catback system and it is great on startup but once warm and at idle it's almost as quiet as stock with the valves open. My questions for you is with only the rear mufflers on is it much louder. I'm contemplating removing the Xforce catback and having my mbrp custom fit to the headers and high flow cats. Or if the mufflers alone are fairly loud then just having the center muffler removed and using the two varex mufflers.
My set-up is plenty loud with the longtubes, h-pipe and Xforce Varex axle back system. The key is that I have an H-pipe installed. The complete Xforce system has their resonator which is killing the sound. That's why I didn't do the complete cat-back system from Xforce. I would have a shop remove the Xforce resonator and make an H or X pipe instead. That should solve your problem.
