JRFiero Posted June 21, 2004 Share Posted June 21, 2004 Has anyone used headers on an SC300 and retained the cat? The Lextreme site says something like 'you gain 15hp by removing the cat' in its explanation of the header performance improvement. If the hp increase is due to removal of the cat, do the headers make much of an improvement themselves? I read elsewhere that our cats flow quite well. I know the headers are for 'off-road use only,' and I know you'd have to make up a Y pipe to bring the two flows back together. Just wonderin' ... Quote Link to comment Share on other sites More sharing options...
AWJ Posted June 21, 2004 Share Posted June 21, 2004 Not sure man, gave up on that stuff. If it doesn't have a t3 or t4 flange on it, I don't look at it. Removing the cat always give something back though. Try that first. Quote Link to comment Share on other sites More sharing options...
soarer479 Posted June 21, 2004 Share Posted June 21, 2004 i agree with awj i also took out my cats and have been happy with the results after i installed my headers Quote Link to comment Share on other sites More sharing options...
Lextreme Posted June 22, 2004 Share Posted June 22, 2004 Sorry i dont deal much with inline 6 so i am not sure what the original talking about. Quote Link to comment Share on other sites More sharing options...
JRFiero Posted June 22, 2004 Author Share Posted June 22, 2004 Lextreme - Sorry, its the Lexstasy site which says "These Top Speed Headers Will boost your horse power at least 15+ horsepower by eliminated to catalytic converters." Quote Link to comment Share on other sites More sharing options...
Lextreme Posted June 22, 2004 Share Posted June 22, 2004 No problem.... I am not sure about the Inline 6, but the V8 have pretty flow already therefore it would be a waste of money from my personal experience. Do a search and find out..... Quote Link to comment Share on other sites More sharing options...
Lex Luthor Posted June 23, 2004 Share Posted June 23, 2004 Has anyone used headers on an SC300 and retained the cat? The '98-00 SC300 had tubular headers from the factory, find yourself a set with the cats intact, it will get you a few horses....I have it if you need...PM me if you like, I don't like to hawk parts on the forums. Quote Link to comment Share on other sites More sharing options...
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