Can I put quad tips onto the pypes cat back exhaust?

[6bangerBOOM]

I have the quad tip look too, and love it. The Pypes setup is designed and spaced for the dual exhaust diffuser, so it's not immediately going to work with the quad setup. I personally would recommend installing the Pypes system and quad diffuser (a combination which actually still looks good) yourself, and then taking it in to an exhaust shop for the quad tip modification. This will save you quite a bit of money on an install fee as all you'll then only need a little cutting and welding. They're probably not going to be able to just bend the piping because of the hangers' positioning. If you bend the pipes then the hangers won't line up like they need to be. Like I said though, it doesn't look bad to have dual tips and the quad diffuser. Though it looks MUCH better with the quad tips.