Downpipe question

[EJ257]

I know this is old, but no one told me where the 2nd cat was.

The '09+ may only have one cat. I haven't done a downpipe install on one to confirm, but I believe they only have the one now.

[Axex]

I know this is old, but no one told me where the 2nd cat was.

I'm pretty sure they are both on the downpipe. An aftermarket catted downpipe will replace both with 1 high flow converter.

[SubiEj255]

There isn't one in the midpipe/test pipe?

[jthatch12]

There isn't one in the midpipe/test pipe?

Look under you car.... It takes 25 seconds to look.

I know for my car (03 WRX) there was a cat in the uppipe, downpipe, and midpipe. That being said, my car now only has one highflow cat in the midpipe.

[PBallen]

This should help.......

[Methodical4u]

Here in md they don't do the sniffer on newer cars.

They don't? They did on my last cars that were new.

[Sinister]

They do on mine too... it's a regional thing

[MainFrame]

They do on mine too... it's a regional thing

Yep.. depends on which county the car in registered in.

[SubiEj255]

Oh yea that help a crap ton man... Where you find that? I would love to have an engine schematic like that.

[MainFrame]

Oh yea that help a crap ton man... Where you find that? I would love to have an engine schematic like that.

That exhaust diagram? It's probably been on here for eight or nine years, lol.

[SubiEj255]

See I didnt kno that LOL. I've been lookin for as many diagrams as possible for these cars. I can't find any.

[MainFrame]

google is your friend


(also the forum search function)

[SubiEj255]

Last question I have is I have a Cobb AP, I seen it said that map is for catted DP. What could happen with running it with a catless?

[SD_GR]

Search "boost creep" and follow the link in my signature for other info.

[SubiEj255]

So the only disadvantage with a catless DP tuned with an AP is boost creep?