[CrimsonMoonLight72]

So the ER high flow catted DP is finally on. I ended up having a local and well known shop put it on due to my lack of tools and experience. Don’t roast me on this but I also had new tank ventilation valve or purge valve...whatever it’s called , put on with DP. I tried to pull those vacuum hoses off but I know I would of probably broke those squeeze clips.

Anyhow it was a total of $250 labor both DP and valve install....I figure that’s a decent price considering my car is Xdrive which is a little more work involving I guess.

I went from an OEM downpipe of 900 cells to the high flow cat with 200 cells. I get home and back into my small garage and I have to say that you could smell the gas no doubt more than with OEM downpipe. I figure that makes sense with only a 200 cell cat? It’s a smallish garage so.....inside the car with windows rolled up I didn’t smell any gas but I have to drive around more. I don’t expect any smell with windows up either at idle or driving around. I’ll try the windows down at idle and while driving for a total assessment.

There is defiantly a rawer rumble at start up and at idle and when getting on it. All the exhaust behind downpipe is stock. The only thing I did was a dummy plug ( which I was able to do myself lol ) to keep both valves open. I forgot to ask if he used a pipe expander...I’m assuming he did. He test drove car at warm and at cold to I guess check for any rattles and such. And no CEL yet.

Just a curiosity.....and I’m sure these guys did a proper job as they are known for quality of work but how can you tell if DP is leaking either off of the turbo or off of mid pipe connection?

[mike@x-ph.com]

If there was a leak, you will easily smell it. If you notice a fuel smell inside the car, you have a leak.

It's normal to notice the fuel smell in a small garage, but it should be gone once you are outside

[G.Newt]

Originally Posted by mike@x-ph.com

If there was a leak, you will easily smell it. If you notice a fuel smell inside the car, you have a leak.

It's normal to notice the fuel smell in a small garage, but it should be gone once you are outside

Yep +1. My car started smelling like fuel inside the cabin about a year ago. I installed the DP about 4.5 years ago, so I guess it got loose somehow. Shop used some penetration fluid and tightened my entire exhaust up and no more fuel smell. You'd know OP lol.