Oem exhaust pipe

[madog7200]

Is anyone running the oem exhaust pipe on their 6 cylinder. I bought a new stainless steel exhaust manifold and when I was installing it on the new motor I saw that the flange on the pipe looks crushed. So I was wondering if anyone could snap a picture of their pipe so I could see if mine is crushed or if it's made that way from the factory

 

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[Eagle]

That's correct. A lot of people complain about it, but the OEM downpipe has a flat spot in it.

[DirtyComanche]

It's there for driveshaft clearance.

 

If you're not lifted, you need it.  There is massive gouge marks in mine because the exhaust was redone without it.

[madog7200]

That's correct. A lot of people complain about it, but the OEM downpipe has a flat spot in it.

Well now I'm getting what seems to be a slight backfire every now and then... I'm wondering if it has to do with the new header having better air flow which might be creating back pressure?

 

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[madog7200]

Just went outside and snapped a couple pic's this is what mine looks like it's hard to tell I know but it's dark...

But the "crushed" part is right below the flange

 

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[johnj92131]

If I remember correctly, Cruser54 has posted the "restriction" is there for emission reasons on the Renix era Comanche.  Think it is to warm things up a bit quicker.

 

Check out Cruser54 comments on H.O. vs Renix.

[Rockfrog]

My Renix never had crush, I actually kept that section of the exhaust when I pulled the stock system.

All the HO's I have seen had the crush at the flange.

 

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[Crash]

My Renix never had crush, I actually kept that section of the exhaust when I pulled the stock system.

All the HO's I have seen had the crush at the flange.

 

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