Is it posiible to remove the cats and resonators??

ChinoOrtega · 03-11-2008, 09:47 PM

I'm planning on doing this but I need an expert opinion from you guys, I think there are two cats and two resonators, one cat has an oxygen sensor, so i was wondering if I could remove the other cat and the resonators without having any warning lights????? In my country there's no pollution law or anything, and I know that this must at least give a couple of hp's, or can I delete the whole cats and resonators?? the only thing holding me back is the check engine,
thanks guys, i'm really looking forward to do this!!!!!!!

KonigsTiger · 03-11-2008, 10:23 PM

Uffff, this sounds a bit difficult since your dash lights will certainly go wild!!! But a good machanic can trick the system if it is a must for you!!!

SS32 · 03-15-2008, 08:50 PM

EVO Sport has high-flow cats for the M5, so I imagine they or someone else would have some for the M3. I don't think you could eliminate the cats completely, though. You can, however, easily take out the resonators. There aren't any electronics in them.

03-11-2008, 09:47 PM	#1
ChinoOrtega Lieutenant Drives: M3 e92 Space Gray Join Date: Apr 2007 Location: Guatemala Posts: 578 iTrader: (0)	Is it posiible to remove the cats and resonators?? I'm planning on doing this but I need an expert opinion from you guys, I think there are two cats and two resonators, one cat has an oxygen sensor, so i was wondering if I could remove the other cat and the resonators without having any warning lights????? In my country there's no pollution law or anything, and I know that this must at least give a couple of hp's, or can I delete the whole cats and resonators?? the only thing holding me back is the check engine, thanks guys, i'm really looking forward to do this!!!!!!!
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03-11-2008, 10:23 PM	#2
KonigsTiger Racying Dynamics Drives: E92M3 RS46 Club Sport, others Join Date: Jan 2008 Location: Dweller Posts: 4,422 iTrader: (0)	Uffff, this sounds a bit difficult since your dash lights will certainly go wild!!! But a good machanic can trick the system if it is a must for you!!! __________________ ==================================================

03-15-2008, 08:50 PM	#3
SS32 Major Drives: 2008 M3 Join Date: May 2007 Location: Wilmington, NC Posts: 1,404 iTrader: (0)	EVO Sport has high-flow cats for the M5, so I imagine they or someone else would have some for the M3. I don't think you could eliminate the cats completely, though. You can, however, easily take out the resonators. There aren't any electronics in them. __________________ V1 DIY - Blinder M45 DIY - Exhaust Cutouts - Removed Clutch Pedal Spring DIY - Fiamm Air Horns