Does anyone know if there is a 2.5" downpipe available that has the cat delete? Looking for a one piece dp for my EVO IX MR.

Thanks.

 

I think DC sports has a 1 piece dp + cat delete. Its 3" tho. Not sure why u would want 2.5". MAP also has a 1 piece dp available with cat delete, but it replaces o2 housing as well.

 

+1 on the 2.5 versus 3 inch.

 

+2 . OP stock diameter is 2.25" I believe. While 2.5" is an upgrade, why not go with the tested and proved 3 in? Availability is also is play here.

Did you check Google for what you are looking for ?

 

+3 on 3 inch

 

^^that's what she said!

 

^^

 

Definitely go 3"

 

Stock is 2.5" from my research. The catback is pretty well designed, mandrel bent, not terribly restrictive. I figure, if I replace the downpipe and substitute a test pipe for the cat, that will flow plenty to meet my power goals - and remain reasonably quiet. I understand and accept I may lose 8-10hp at peak, but I should pick up 15-20 by going this route.

I'm aiming for minimal mods at this point. Downpipe and test pipe alone should flow well enough to support an endstate of 320whp. Working on figuring out the other required mods, just happened to start here with the exhaust.

 

Uh...the catback is restrictive...I don't think you'll pick up 15-20 by going that route.

If you're worried about noise get a good quality catback with a high-flow cat or the stock cat

 

15-20whp, vice maintaining the stock system w/ the other required mods to net you 320whp.

Not saying the dp/tp combo would do that on it's own.

 

anyone else, who's making a 2.5" downpipe?

 

Tomei expreme dump/o2 and front pipe is 2.6" (66.7mm ID), thats about the smallest I'm aware of. The stock items are 55mm ID, they're tiny.

 

Thank you Sir