Catted Or Catless Down Pipe??

[Gabe Martinez]

I have been out of the bolt on loop for a while now and am wondering if I should get a catted or catless down pipe for my 2015 Ecoboost Mustang. I want to make sure that I will be able to pass the emissions tests when I get my inspection done, and if a catless setup would impair that. Any advice on this would be greatly appreciated.

 

[84Ttop]

If emissions are a concern, you will need to retain a catted down pipe of some sort. Look towards upgrading the intercooler in your car for significant reductions in IAT temps as a solid upgrade. FWIW, Vortech makes a nice complete kit for the intercooler upgrade.

 

[Gabe Martinez]

So you I should do an intercooler upgrade before I do the down pipe, or just do them both together?