White Knukle Posted July 6, 2009 Report Share Posted July 6, 2009 ok, today i got underneath my 03 SSS and wow ive never seen so much crap under a vehicle before..lol....any ways, ive been looking at getting some e-cutouts andim not sure of the best mounting place would be....also, if i do the e-cutouts, should i purchase a new y pipe, or would my stock one work just fine? and one more thing....what size cutouts would work with the truck? any help is greatly appreciated and i hope that everyone had a wonderful 4th of july weekend! Quote Link to comment Share on other sites More sharing options...
mjohnson18 Posted July 7, 2009 Report Share Posted July 7, 2009 I had my exhaust guy put two 3" cutouts on my stock y-pipe. It did take some skill but he put the cutouts on each side before the cats. He took the o2 sensors out and let them hang so as to not heat them up too much. Then took a sawzall to start the holes in the pipe, and finished the holes with the mig. Then to finish, he welded the two 8" pipes with flanges to the pipes. the cutout pipes are welded on the opposite side of the o2 sensors. and the best part, you can even drive around with open headers and throw no codes. I have not had one check engine light yet. If anything go before the cats or don't do it at all because it will sound horrible after the cats. Quote Link to comment Share on other sites More sharing options...
70chevy03ss Posted July 7, 2009 Report Share Posted July 7, 2009 Well I wouldn't say horrible Had mine after the cats and it sounded mean. But I can't agree more Joose the closer the better. Quote Link to comment Share on other sites More sharing options...
mjohnson18 Posted July 8, 2009 Report Share Posted July 8, 2009 Well I wouldn't say horrible Had mine after the cats and it sounded mean. But I can't agree more Joose the closer the better. Quote Link to comment Share on other sites More sharing options...
mjohnson18 Posted July 8, 2009 Report Share Posted July 8, 2009 I only felt that way after A live comparison between the two... Quote Link to comment Share on other sites More sharing options...
White Knukle Posted July 8, 2009 Author Report Share Posted July 8, 2009 thank yall for your input...i was recently thinking of cutting out the cats completely and replacing them with the cutouts... do you think that would throw out any codes? Quote Link to comment Share on other sites More sharing options...
mjohnson18 Posted July 21, 2009 Report Share Posted July 21, 2009 thank yall for your input...i was recently thinking of cutting out the cats completely and replacing them with the cutouts... do you think that would throw out any codes? Maybe it could throw a code. There are O2 sensors after the cats too, and that might change a reading resulting in a code. But, it would sound pretty kick ass! Quote Link to comment Share on other sites More sharing options...
Friday25 Posted September 17, 2009 Report Share Posted September 17, 2009 it'll def. throw a code...i removed my cats and within seconds i had a check eng light....you have to have a tune done to have the rear o2's turned off in the computer Quote Link to comment Share on other sites More sharing options...
ANGRY6LITER Posted September 21, 2009 Report Share Posted September 21, 2009 I dont have cats, but I did my cut-outs just after trans cross brace and that worked out well for me. Quote Link to comment Share on other sites More sharing options...
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