thebing

iTrader: (1)

Hey guys,

Hopefully i can get some help on this, was wondering which DP to use with the SPT (bosal) catback exhaust. Reason being, i want to get a less restrictive DP, or even a Catless one, but i love my SPT exhaust way too much to get rid of it.

A buddy of mine tried to do this, and he said that the helix catless DP wouldnt fit perfectly due to the SPT not being true 3"?

Does anyone have any experience with this? OR does anyone know of a solution like an adapter that would mate the 3" DP and a less than 3" catback perfectly?

Any and all help is greatly appreciated. Searched and couldnt find an answer.

Brandon

pj21086

iTrader: (24)

i know the invidia down pipe will fit. it is a full 3" but the flange will allow you to use either 2.5" or 3" exhausts.

strider327

iTrader: (10)

I'm assuming the helix DP would work as to I mated my Helix DP with my stock 2.5 catback.

thebing

iTrader: (1)

thanks for the help so far. thats wierd that my buddy got leaking when he first mated he helix catless to the SPT. argh, this is so confusing.

strider327

iTrader: (10)

It all depends on if you double check on your work and torque it down right. You'll hear from some that have leaks after install and some that never do. Just get new gaskets and always double check your work. Good Luck

WRX409

+1
The Invidia down pipe will fit for sure.

Ivegotthenuts

iTrader: (21)

sorry for hijacking the thread, but does anyone know which DP will mate to a Stromung Catback? It fits the stock 3rd cat, so I'm assuming it tapers to 2.5??