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Discussion Starter #1
I did some sea foam on my car and I noticed quit a bit of smoke leaking from where my 4 into 2 pipes meet on my header. There's supposed to be a gasket, but I guess it's blown through. Could this make my o2 pick up too much air and run rich? Also, I've been getting a lot of popping/backfiring when I slow down in gear
 

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yeah if ur headers are crap they tend to warp at that section.. i had to get mine machined and new gasket installed.
 

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Discussion Starter #4
They're not exceptionally cheap headers. I got them without the gaskets so I used a 'high temp' u-cut material. It seemed to work pretty well. Anyone have any ideas for a really good gasket material that I can cut out?
 
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