Downpipe help

[77tech9]

I have a poston header and poston 3" downpipe now, I want to upgrade to a new downpipe with the THDP style.

Which would I need to fit on the poston headers? I'm goign to be running no cat with a test pipe.

P.S. The poston dp leaks bad, very bad design.

 

[XLR8]

A THDP should bolt up to your Poston headers without any issue.

 

[denn454]

any downpipe should work, its attaching to the trubo not the headers.

I agree with the postons downpipe complaint, but i did beat mine into submission. it doesn't rub on the frame any more, thats fixable with a big hammer. and it doesn't leak either, that just happend on its own

 

[77tech9]

Thats what I was thinking too, but i've seen some for "aftermaket headers (like atr)" and "stock type headers".

 

[denn454]

the difference is how they are made, and the size of the pipes. aftermarket ones are made to flow better for higher power engines, they also don't crack like the factory ones do. but as far as how they bolt up its all the same.

 

[77tech9]

No i mean the THDP, i've seen different versions of it.

 

[MSDGN]

The THDP for stock headers works fine with Poston headers...

 

[5ltretr]

What about the THDP for stock headers on an ATR system?