i have the GMPP exhaust on my HHR and since our cars share the same platform and the exhaust is routed the same. how do you guys replace the resontor with a straight pipe? do you get it custom made or can you buy it somewhere ready to go??

 

you can just buy a stretch of pipe that is the same size/length. it will sound like complete ass though. but should be done fairly cheap, depending on how much it will cost to weld.

 

so it sounds crappy?

 

Yes,

Removing the resonator like D4u2s0t said wouldn't sound awesome at all. IIRC there isn't that much of a gain from doing it either.

 

would sound raspy and not good at all! i doubt there would be any performance gains by doing so, as its a straight through design, not much restriction, wouldnt net much at all for hp wise on a SS/Sc let alone a HHR

 

i took mine off cuz somthing inside of it was rattling and with a straight pipe added was only 40 bucks alltogether but souded awful it sounded like a honda with no muffler with a huge wing...u get the picture...trust me and everyone else on this site and dont do it you wont regret it you can can different resonators tho that may sound better i have a cherry bomb glasspack as my resonator and sounds very good and deep trust me man dont straight pipe

 

I took out my resonator on my corsa sport cat-back because it was cracked on the inside and could hardly tell any difference at all. It will NOT sound like ****. if it does its because of a shitty muffler.