When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
what kind of power difference with a can one expect from a zzp catted dn pipe on a 09 hhr ss? the car is stock otherwise. zzp doesn't claim any power numbers.
what kind of power difference with a can one expect from a zzp catted dn pipe on a 09 hhr ss? the car is stock otherwise. zzp doesn't claim any power numbers.
If you are doing it as a stand alone mode, i doubt you will feel any power difference. I think it is more of a supporting mode, if you are getting tuned or going bigger turbo.
None - the stock tune in the SS has a learn down feature. You would need to go to some aftermarket tune to defeat that feature. Even GM's own upgrade defeats it.
You probably won't see much unless you do some major mods that increase exhaust flow.
Otherwise I would assume you would lose some low end power and gain a little top end if it's even noticeable.