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#1
06-09-2009, 03:24 PM
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GST Downpipes
Quick question as I'm looking at GST downpipes... are all of them made to delete the cat? They all look like they do. I plan on using a GST downpipe and then added a test pipe in place of the cat, then can swap out the test pip when I have to do for emissions.
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2013 Chevy Sonic 1LZ Daily Driver, 1.4L Turbo, 6spd 75 Monte Carlo SBC 400 6.6L, Aluminum heads, Hurricane Intake... 12 Chevy Sonic 1LZ 1.8L - Traded 01 Pontiac Grand Am SE - RIP 95 Eagle Talon ESi-T 5spd - RIP 88 Oldsmobile Cutlass Ciera- RIP 
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#2
06-13-2009, 04:17 PM
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Re: GST Downpipes
So no one with a GST has an aftermarket Downpipe? Really?
__________________
2013 Chevy Sonic 1LZ Daily Driver, 1.4L Turbo, 6spd 75 Monte Carlo SBC 400 6.6L, Aluminum heads, Hurricane Intake... 12 Chevy Sonic 1LZ 1.8L - Traded 01 Pontiac Grand Am SE - RIP 95 Eagle Talon ESi-T 5spd - RIP 88 Oldsmobile Cutlass Ciera- RIP
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#3
06-13-2009, 08:26 PM
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Re: GST Downpipes
 We make our own exhausts around here... Who needs a cat anyways?
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-Brian
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#4
06-16-2009, 11:53 AM
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Re: GST Downpipes
I have a DP that doesn't eliminate the cat. I got it from Extreme MotorSports, but I'm not sure if they are still around following the fire. They were supposed to be opening back up but their website is still offline.
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 1997 Spyder GS-T 5-Speed EVO III 16g, DSMLink, Walboro 190 lph Fuel Pump, FIC 650cc injectors, CoolingMist 150psi Methanol Injection, Greddy EVO 2 Cat Back, 2.5" Extreme DP, 2.5" Extreme Hi-Flow Cat, Injen intake, HyperDrive C1 Street Disk & PP, HyperDrive Lightweight Flywheel, 1g BOV, RRE UICP, Home Depot MBC, AEM UEGO WBO2, Brembo Slotted rotors, Akebono Ceramic Pads
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#5
06-16-2009, 01:08 PM
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Re: GST Downpipes
Was it specific for "with cat"?
__________________
2013 Chevy Sonic 1LZ Daily Driver, 1.4L Turbo, 6spd 75 Monte Carlo SBC 400 6.6L, Aluminum heads, Hurricane Intake... 12 Chevy Sonic 1LZ 1.8L - Traded 01 Pontiac Grand Am SE - RIP 95 Eagle Talon ESi-T 5spd - RIP 88 Oldsmobile Cutlass Ciera- RIP
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#6
06-16-2009, 11:44 PM
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Re: GST Downpipes
Dave, why don't you just get one without the cat and then cut out the section you wanna put the cat in and weld it yourself? That would be way easier than trying to find one with it.
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-Brian
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#7
06-17-2009, 07:40 AM
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Re: GST Downpipes
Quote:
EDIT -> Here you go.
__________________
1997 Spyder GS-T 5-Speed EVO III 16g, DSMLink, Walboro 190 lph Fuel Pump, FIC 650cc injectors, CoolingMist 150psi Methanol Injection, Greddy EVO 2 Cat Back, 2.5" Extreme DP, 2.5" Extreme Hi-Flow Cat, Injen intake, HyperDrive C1 Street Disk & PP, HyperDrive Lightweight Flywheel, 1g BOV, RRE UICP, Home Depot MBC, AEM UEGO WBO2, Brembo Slotted rotors, Akebono Ceramic Pads
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#8
06-17-2009, 08:41 AM
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Re: GST Downpipes
Cool cool thanks. Not exactly cheap are they? Maybe I will just buy one and cut it then.
__________________
2013 Chevy Sonic 1LZ Daily Driver, 1.4L Turbo, 6spd 75 Monte Carlo SBC 400 6.6L, Aluminum heads, Hurricane Intake... 12 Chevy Sonic 1LZ 1.8L - Traded 01 Pontiac Grand Am SE - RIP 95 Eagle Talon ESi-T 5spd - RIP 88 Oldsmobile Cutlass Ciera- RIP
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#9
06-17-2009, 11:36 PM
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Re: GST Downpipes
Quote:
__________________
-Brian
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#10
07-10-2009, 02:31 PM
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Re: GST Downpipes
For future reference ladies, the GST DP WILL NOT WORK on the 420a. After much research, the GST pipe has to be to the left to get around the oil pan and the center brace, while the 420a goes the opposite way. Looks like I'll just be fabbing up my own turbo->cat exhaust now.
__________________
2013 Chevy Sonic 1LZ Daily Driver, 1.4L Turbo, 6spd 75 Monte Carlo SBC 400 6.6L, Aluminum heads, Hurricane Intake... 12 Chevy Sonic 1LZ 1.8L - Traded 01 Pontiac Grand Am SE - RIP 95 Eagle Talon ESi-T 5spd - RIP 88 Oldsmobile Cutlass Ciera- RIP
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