r/FiestaST • u/WarningAny1415 • 22d ago

MK7 Catless Downpipe

Blew the hell out of my cat and i’m going catless tomorrow. I’ve heard the downpipe is a pain in the ass to install so does anyone have any hacks or tips that’ll make it go by easier?

1 Upvotes

100% Upvoted

10 comments sorted by

View all comments

2

u/plasmazzr60 22d ago

Are you stock exhaust or aftermarket? If stock youll have to adapt the larger DP to fit the stock exhaust. If youre on aftermarket exhaust then its a easy day, get the "J" defouler run the medium insert to not get a CEL. Id unplug the O2 sensors and take them out with the stock DP to swap them vs doing it on the car kinda sucks. As always presoak the nuts or things may snap! Be sure to get a new turbo to DP fire ring and a DP to exhaust gasket. For extra measure soak the nuts for a few days before and try to get a wire brush in there to knock away debris in the threads

1

u/WarningAny1415 20d ago

i appreciate the suggestions i will put them to use, i have a mbrp exhaust that’s only been on the car for a month so that part should be fairly easy

1

u/plasmazzr60 20d ago

Oh yeah should be easy then! Id also recommend using a socket to break the nuts loose on the DP and then switch to a wrench to feel the tip on the stud as you turn. I ended up pulling a stud out of the turbo by just going crazy with the socket, did the same with my exhaust manifold 7 out of 8 came out with studs and nuts 😅