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April 10th, 2007, 07:39 PM
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Magnaflow cat 93439
Hi,
I am looking for a replacement catalytic converter and found this direct fit on for the GN. I email a vendor for them and he writes me back and says it is not emissions compliant? He said it was high flow and wouldn't work well for emissions testing. Why would they make a cat that won't pass emissions? Is it not a 3-way cat or something? Does anyone know if it will work for the dyno smog test? Thanks, James I already have a catco cat, but it didn't do such a great job at the 15 mph of the test.
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1989 Turbo Trans Am T-Tops/Leather AFR, Powerplate, 36# Inj, SS Maf pipe, My own Chip, Translator, 3.5" LT1 maf, STB, Big neck GN intercooler, Magnaflow cat     
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April 10th, 2007, 11:16 PM
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If it's a three way cat then it's just fine. I have that cat on my car.
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87 Buick GN 55 Chevy 3200 Heavy 1/2 Ton 99 Pontiac Bonneville Joe
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April 11th, 2007, 08:37 PM
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The website (magnaflow.com) doesn't say if it is 3-way or not, just that it is 49 state and california compliant.... I would hope that it is 3-way then. It also says it is direct fit...lol
Thanks, James
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1989 Turbo Trans Am T-Tops/Leather AFR, Powerplate, 36# Inj, SS Maf pipe, My own Chip, Translator, 3.5" LT1 maf, STB, Big neck GN intercooler, Magnaflow cat
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April 11th, 2007, 10:56 PM
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If CA compliant, then it probably is Three-way. I doubt it's direct fit, I had to have the muffler shop cut the old flanges off my ATR cat and weld them on the new cat. It direct fit, then we have a good replacement for our worn out cats.
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87 Buick GN 55 Chevy 3200 Heavy 1/2 Ton 99 Pontiac Bonneville Joe
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