Which Header
Originally Posted by lookslikeanevo
now the only way you will pass emission is if your car has been running and has been warmed up...but in most states you will not pass the visual part if you have one...since they will see you have a header
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From: Wash. Heights, NYC but now in Miami
Originally Posted by sthiewes
I could just put the heat shield back on that way it covers the header right?
Originally Posted by Al Banks Holla
Doubt it. The sotck heat shield probably won't fit over the new header as the flanges come out a little further.
we have 2 cats and 2 o2 sensors
1 o2 sensor is before the first cat in stock header, and the second o2 is right before the 2nd cat.
when stock: the 1st o2 will read diry air and the 2nd will read clean air...
after a header install, 1st cat is eliminated and now both o2's are reading dirty air.
if you turn your 2nt cat around(the only one you can turn around) so that the 2nd o2 is after the 2nd cat instead of the 1st, then your 1st o2 will again be reading dirty, and since your 2nd o2 is not after the cat which cleans the air, it will now read clean air therefor getting rid of CEL
1 o2 sensor is before the first cat in stock header, and the second o2 is right before the 2nd cat.
when stock: the 1st o2 will read diry air and the 2nd will read clean air...
after a header install, 1st cat is eliminated and now both o2's are reading dirty air.
if you turn your 2nt cat around(the only one you can turn around) so that the 2nd o2 is after the 2nd cat instead of the 1st, then your 1st o2 will again be reading dirty, and since your 2nd o2 is not after the cat which cleans the air, it will now read clean air therefor getting rid of CEL
My stock heat shield fit over my RRM header, but it scraped it a tiny bit. The header really doesn't get extremely hot anyways. The ceramic coating keeps the heat in. Maybe this summer I might put it back on since it gets to be like 95 degrees here. Don't wanna choke out my SRI. That also might help on the visual inspection for other states.. When I put on the heat shield on the RRM header, it covered up everything so you could barely see the pipes coming out. If you glanced at it, the engine would almost look stock.
Originally Posted by K.I
so when you install a new header you have to get it inspected? i dont get whats up with the inspections and tests n all 
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