2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

ZZP Catless 2.5" downpipe?

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Old 06-22-2007, 11:27 AM
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ZZP Catless 2.5" downpipe?

Dose anyone know how much of a gain i would get by adding this to the modds i already have? Im going no cat cuse the gm stage 3 pcm dosent turn on a ses light if you dont have the rear ho2s sensor not pluged in.
Old 06-22-2007, 03:39 PM
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you'll pull pretty hard in high-inRPMs. better the flow = less heat/ friction = more useable power!
Old 06-23-2007, 03:48 PM
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8 to 15 hp increase .... go catless



Mods: Injen CAI, ARK 2.5 inch catback exhaust, downpipe w/o cat, GMP Extrude Honed Header, meth injection walbro fuel pump, stage 3, 42# injectors, 2.7 pulley, Spec stage 2 clutch, Eibach sportline springs, Eibach sway bars, ca traction bars, DC front and rear strut bars, 3 gauge pod piller, plx wideband, autometer boost gauge, oil pressure gauge, and water temp gauge, halo projectors, 12000K hid kit, 5% tent... and more mods to come!
Old 06-23-2007, 04:12 PM
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i wanna buy this, but im thinkin i need a cat for emissions and all that crap....
Old 06-23-2007, 04:18 PM
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you dont need emissions on a new car until you sell it to someone and then they have to get emissions for it.... just keep your stock downpipe just incase



Mods: Injen CAI, ARK 2.5 inch catback exhaust, downpipe w/o cat, GMP Extrude Honed Header, meth injection walbro fuel pump, stage 3, 42# injectors, 2.7 pulley, Spec stage 2 clutch, Eibach sportline springs, Eibach sway bars, ca traction bars, DC front and rear strut bars, 3 gauge pod piller, plx wideband, autometer boost gauge, oil pressure gauge, and water temp gauge, halo projectors, 12000K hid kit, 5% tent... and more mods to come!
Old 06-24-2007, 08:40 AM
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i think in pa i have to have a cat and a resonantor, i think, im not sure...
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