Borla header glows red

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06-27-2010, 02:29 PM

#16

MyNameIsNick

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Join Date: Jun 2010

Location: Columbus, OH

Posts: 113

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Year: 1996

Model: Cherokee

Engine: 4.0 of course

Did you just notice this happening? You should see if you can hook up a wide band a/f and check that.

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07-17-2010, 11:17 AM

#17

alpine.adrenaline

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Join Date: Aug 2009

Location: 9000 ft, CO

Posts: 1,127

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Year: 1999 XJ

Model: Cherokee

Engine: I6 4.0L

Quote:

Originally Posted by FrankZ

No, do not wrap the header.

X2, then you'll just be radiating heat back into the header, which will only make it hotter. An unlit propane torch works well because it's more like a wand, might help you find the exact spot you're sucking air in. I bet your catalytic converter and downpipe are red too. You need to stop running it like that until you get rid of the lean mix.