and no i did not touch the manifold gasket

 

machron1 thank you ! thanks everyone. i'll replace the freaking dp back to stock...i'll keep you guys updated tomorrow. thanks again

 

Then I would sooner believe you cracked the exhaust manifold than believe the machined mating surfaces with a very uniform piece of steel between them torqued properly from the factory are somehow suddenly letting exhaust out, coincidentally at the same time that you replaced your downpipe with a generic one...

I mean I could be wrong, but I'm not

 

[QUOTE=machron1]Then I would sooner believe you cracked the exhaust manifold than believe the machined mating surfaces with a very uniform piece of steel between them torqued properly from the factory are somehow suddenly letting exhaust out, coincidentally at the same time that you replaced your downpipe with a generic one...

I mean I could be wrong, but I'm not [/QUOTE
There is no piece of steel that meets without a piece of plastic. Or non conductive meatal betwean...

 

^ Say what?

Plastic gaskets?

 

This was taken from another Evo owner's thread. He lost a bolt holding his downpipe to the O2 housing. This is what resulted. Looks pretty similar to your problem.

 

He is attempting to talk about preventing galvanic corrosion between the head and exhaust manifold.

 

Yeah but it a metal gasket there. And manifold to the turbo and turbo to the O2 housing.
That's why I was wondering where he got plastic from.

Oh and what are the non-conductive metals??

 

Find a torque wrench and tighten the cylinder that is leaking....

 

wtf? this has nothign to dow ith the cylinders? And thereis no way they could be leaking. You seriously know nothign about cars.

 

but just today i replace the gasket between the dp and the o2...so everything is tight and in place....

 

Tim, please review my "reported post" in relation to zhemel. This is a perfect example of what I am talking about, if you happen to read it. Glad you got to see him in action first-hand...

 

Reported post? Gee warrtalon, you shoulda reported them all

 

Ummmmmm look at that car, it's just like I said. The air is getting pulled up from the DP/O2 connection through the center of the exhaust manifold by the venturi effect of the louvered vent on top of the hood. Just because you tightened the bolts doesn't mean your generic downpipe is able to make a seal with the gasket and O2 housing. But doen't listen to me, go back to listening to people who think there are plastic gaskets on the engine, or that you should "tighten the cylinders" (FTW?), or how about the brainiac mechanic who put a stethiscope on your exhaust manifold and proclaimed it was leaking...

 

Yes there is, it goes [cylinder head] <-> [gasket] <-> [exhaust manifold], which is aluminum, steel, and cast-iron, respectively. Nothing in between but the gasket.

Don't make me photocopy my maintenance manual for you...