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2000SoCalBoxsterS · 11-22-2007, 09:50 AM

Before you decide to switch to Catless headers make sure that the Cat will work properly in a different location. I'm not saying it won't work in the position of the resonators, I'm just saying check into it. The pellets in the Cat need to be heated to a certain temperature to function correctly.

Being in the header is probably hotter than being further down stream. I know on the Boxster downstream is not very far at all, but I'm just saying do the research on what the temp range needs to be for the Cats to work properly. You don't want check engine lights going off or failing the NYS emissions test at your next inspection.

11-22-2007, 09:50 AM	#3
2000SoCalBoxsterS Registered User Join Date: Mar 2007 Location: Huntington, NY Posts: 409	Before you decide to switch to Catless headers make sure that the Cat will work properly in a different location. I'm not saying it won't work in the position of the resonators, I'm just saying check into it. The pellets in the Cat need to be heated to a certain temperature to function correctly. Being in the header is probably hotter than being further down stream. I know on the Boxster downstream is not very far at all, but I'm just saying do the research on what the temp range needs to be for the Cats to work properly. You don't want check engine lights going off or failing the NYS emissions test at your next inspection. __________________ http://i25.tinypic.com/20aq3wn.jpg http://i26.tinypic.com/2zguetx.jpg http://i28.tinypic.com/2jdi1ok.jpg 2000 Boxster S: 18" Turbo wheels w/color crests, Litronics, Onboard Computer, Traction control, Cruise, Painted rollbar, Leather interior, Aluminum package, headlight washers, Porsche GT3 seats, windstop, Hi Fi six speaker amp package, DSP, CDR 220, Limited Slip, side airbags, BK Rollbar extender.