B7 AUDI A4 2.0T ECS Tuning High Flow Cat Install [How To] 

Thanks for your interest.The install was a little tricky because it's a tight spot and you are doing most of it by touch. The three allen head bolts, that held in my stock diverter valve, had thread locker on them and would not unscrew by hand once loosened. It probably took me a couple hours to jack the car, replace the valve, and put the skid plate back on. Let us know if you have any more questions or if you'd like a short video discussing the install.

I'm not sure

Yes, it's stock except the downpipe and CAT

You don't need one as the car can compensate for it. I did get an off the shelf tune (jhm) for it as to optimize performance a tune is required.

Yes, everything after the downpipe is factory.

ECS tuning does make one for your car. It is slightly more expensive which may be why you are asking. The 2.0T motors are different between your model and mine along with body platform. Most likely the high flow cat and downpipe would be slightly different in mounting locations and how the pipe is bent.

Damn that’s where I’m at . I did a resonator and muffler delete now I’m scared to put the cat and downpipe from ecs that thing is gonna shoot out flames lol

@@joeespinoza6995 How'd it go?

@@SpartaCraft22965 went good have high flow dp

That's correct. I believe the downpipe is different.

They have a 2.5 in for auto

Not sure anymore, maybe a few hours. The longest part was getting the old one out.

I did not. The spacer worked perfectly.

@@tylermyers5172 what's your spacer and diverted valve? Mine doesnt make that noise

@@alanramir9458 See comments on this video for the blow off valve. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-UL9IMA4UzvM.html The spacer is just Spark plugs non foulers drilled out. I believe I got Dorman P/N 42002.

At the time of this video release, modified oem intake, the high flow cat and downpipe, and a boost pressure gauge. Right now it has a JHM Stage 1 93 octane tune

Yes its a 3in downpipe.

To be honest, I can't remember. In theory it helps spool your turbo quicker as there is less back pressure on the turbine so you should feel a slight difference in overall acceleration as there is less lag. I tuned it pretty soon after this and that helped with throttle response

Yeah you definitely do loose throttle response especially if it's a downpipe with a res delete, you gotta ad a stage 2 file after the Install, make sure they recalibrate your throttle response I speak from experience

The muffler is original but I did find a leak in the pipe right before the resonator

You have to get a really long extension with a swivel head connector to the socket. Feed from the bottom past the subframe if that makes sense. That's how i did it

Make sure you remove the heatshield over the axle. That should give you some more room and I think I also bent some other heat shields out of my way

@@adriannairda2044 yeah i ended up doing it with a swivel . Thanks

I cut it out and after I remove those bolts .. 🔩 😵