Quote:
Originally Posted by @Art_Mighty
I just got the car in the air and discovered that the gasket between the turbo and the down pipe has failed. It not only leaking exhaust, water vapor from the combustion process is also leaking our of the pipe and pooling on the shield below. In addition this leak is screwing with the tune because the leak is before the 2nd O2 sensor.
I'm going to ask Paul for a replacement gasket. In the meantime does anybody know of there's a beefier version of this gasket anywhere? I would rather put up an improved version of at all possible.
Finally do I would like everyones opinion. do I have to drop the turbo/header to fix this or can i do it with the car installed?
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Did you tighten the studs/bolts between the turbo/header and turbo/downpipe? Mine seemed finger tight when I go them and would of caused a failed gasket if I didn't tighten them. I've already gone through a turbo/header gasket also, but I'm not blaming that on the setup, I'm blaming it on the sweet fireballs my car shoots and the lack of loctite/locknuts that I elected not to use the first time around.
As far as the gasket goes, it's a standard gasket so you can use whichever one you want.
And finally, I upgraded to a 3" downpipe while the header and turbo were still on the car so I don't see why you couldn't remove it to get at the downpipe gasket. Keep in mind, there is one stud/bolt that is tricky with the 3" downpipe. It was a piece of cake to remove if you have the 2.5".
PS: If it's still the factory one, the secondary O2 sensor doesn't do anything
It's disabled with a 3rd party tune, and even in stock form it was only there to confirm operation of the primary cat, not to give actual ECU real time info.