Chevy HHR: Accessories & Modifications

11 messages, Last post on May 21, 2008 at 7:40 PM

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What is this discussion about? Chevrolet HHR, Wagon

#10 of 11 Re: hhr accessories [45auto] by smogdung Mar 09, 2007 (4:43 pm)
Replying to: 45auto (Mar 09, 2007 6:08 am) Mine is a 2.4 automatic, has never pinged on 87 but I've almost convinced myself it does have more power with 91.
#11 of 11 Want a Better Sounding Exhaust System by cleantarget10x May 21, 2008 (7:40 pm)
Hi All, I have a 2007 2.2 and want to change the exhaust. I've looked at the archives on this subject and haven't found an answer so I'm asking the current forum members. Who makes the most recomended aftermarket exhaust system for the HHR?? I'd like more "sound." I know the HHR is a 4-banger, but I'd prefer a system that doesn't sound like a changed out exhaust of a Honda. I don't know if that's possible, so please advise me????? TIA Roddy