Quote:
Originally Posted by pepe
Hello! it already knows what the catt is important in removing pollution?
it is better decatt headers and retain second catt? or retain OEM headers and eliminate the second catt?
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Catless Header + Catless Front Pipe + Tune = 1st for gains = Very Smelly Car
Catless Header + Catted Front Pipe + Tune = 2nd for gains = Car Will Still smell sometimes especially in traffic and on start up, just not as much
Catted Header + Catless Front Pipe + Tune = 3rd for gains = Car won't smell, only on start up while it warms up the cat in header.
Basically the cat in the header is the main cat and most restrictive cat so removing it will create most gains but also create the most smell. Hope that helps you
