Stock Exhaust Size?

[nickygn23]

I'm changing out my old exhaust. My catalytic converter is also rusted out. I'm removing the converter for a straight pipe but I need to know the stock size exhaust pipe that comes down from the motor. I'm going to a 2 1/2 inch exhaust. A lot of companies sell cat back systems but I need from the I guess the collector back(you know... the pipe that comes down from the manifolds)
Thanks

 

[charlief1]

You just need a test pipe to replace the cat and then use a cat back system.

 

[blackdeathtrap]

x2 on test pipe
another option would be getting a pypes system with a 3 inch down pipe and a test pipe and gain much more flow for not much more doe

 

[nickygn23]

Yeah but what is the size of the pipe coming down from the motor?

 

[blackdeathtrap]

the pipe that commes down from your turbo and gos into your cat is called a down pipe it is a 2.5 inch pipe

 

[charlief1]

the pipe that commes down from your turbo and gos into your cat is called a down pipe it is a 2.5 inch pipe

That's OD of the pipe. It's double walled so it's closer to a 2.125" inside.

 

[nickygn23]

Thanks guys. I'm good now. I apprecaite it.

 

[blackdeathtrap]

but if your putting a pipe to delete te cat out wanna be on the outside of the downpipe so it dos not creat turbulance in the exhaust flow from the turbo