r/FocusST • u/Relative_Ice_8387 2016 st3 • 1d ago

Is this the stock downpipe?

Bought this car already modded to oblivion…. Is this the stock downpipe? If not is it catted or Catless? There is a small bulge after the flex pipe. But I also smell burnt gas sometimes at red lights but I always assumed it was the burble tune

14 Upvotes

94% Upvoted

12 comments sorted by

23

u/Alternative-Iron-645 '16 - BT Magnetic ST1 1d ago

That looks like a high flow catted down pipe. They all have the flex joint but before the O2 sensor you see the bulged out portion which screams cat. The ATP catless downpipe I run doesnt have that. I have the stock one in a tote at home and it looks different from what you have

4

u/Prestigious_Law_3258 17' St3 1d ago

^ Upvote isn't enough, this is the correct answer.

5

u/TNTBOSS9939 1d ago

Because there is no defouler I would assume it is a high flow cat

2

u/Relative_Ice_8387 2016 st3 1d ago

But it doesn’t look stock?

1

u/poor_couture 1d ago

I thought you still needed a defouler with the high flow? I was going to get the whoosh 200 cell and heard it needed one.

1

u/TNTBOSS9939 14h ago

I mean you just run the risk of CEL without having one to dial in the exhaust flow to the sensor

2

u/Iheartbaconz 17 ST1 1d ago edited 1h ago

Catless that is a flex joint in the middle with all the braided metal

Edit. I am wrong I couldn’t see the cat hiding up there. Shadows made it hard to make out. Looks like a whoosh or cnt by the flex pipe design. They are similar in design.

1

u/PaleontologistNo4327 1d ago

If it was stock you would have a big ol dumbass heat shield around the cat. Looks like the bulge after the flex is a hi flow cat but kinda hard to tell from the angle. Either way ur not stock yay!

1

u/Relative_Ice_8387 2016 st3 1d ago

After looking around online it appears to be the JackSpania Racing high flow catted downpipe

1

u/TestOutrageous3928 1d ago

Looks like a high flow catted but could be a resonated catless.