Aftermarket header questions
#1
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Join Date: Jul 2017
Location: California
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Aftermarket header questions
I have a stock 2002 Gs300 and the car recently came up with a p0420 and P0430 code. Stating its a bad cat and bad o2 downstream. Im thinking of replacing the cat with an aftermarket header and i found some OBX headers on ebay but its a 1 piece header. Im not sure what is the following piece that i am missing to make it complete. can someone tell me what else im missing? Please see the following picture of the unit.
#5
that small two bolt flange is for an external wastegate, and four bolt flange bolts the turbo to the manifold.
the exhaust manifold you need should look similar to picture below
check out www.rockauto.com for decent prices, usually they have the lowest prices around if trying to stay stock(ish).
the exhaust manifold you need should look similar to picture below
check out www.rockauto.com for decent prices, usually they have the lowest prices around if trying to stay stock(ish).
#7
I have thought about giving one of these a shot, but I decided to cheat the test instead.
https://www.summitracing.com/parts/f...stionsanswers/
https://www.summitracing.com/parts/f...stionsanswers/
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#8
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We see that you are located in California, which means you would need a CARB-compliant replacement cat and header. Fortunately, we offer one of these for your GS300 that is a direct bolt-on installation and includes all necessary hardware/gaskets. You can find some more info about it here on our website:
https://www.magnaflow.com/products?partNumber=452843
If you have any questions about it, let us know!
https://www.magnaflow.com/products?partNumber=452843
If you have any questions about it, let us know!
#9
We see that you are located in California, which means you would need a CARB-compliant replacement cat and header. Fortunately, we offer one of these for your GS300 that is a direct bolt-on installation and includes all necessary hardware/gaskets. You can find some more info about it here on our website:
https://www.magnaflow.com/products?partNumber=452843
If you have any questions about it, let us know!
https://www.magnaflow.com/products?partNumber=452843
If you have any questions about it, let us know!
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