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So if I ran some cutouts befor the cats on my 08 my CEL will come on, thats a no brainer. The question is with the CEL on does the ECU change any of the spark/fuel maping? Or does it not effect anything? Just wondering because if I ran cut outs for more performance but the computer went into a "limp home" mode or the like then that would kinda make the cutouts point less.
08 QC 4x4 DiabloSport u7137 K&N drop in Flowmaster exhaust and plasmaglows |
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As long as you have your front O2 sensors installed then you should be ok. If you ran with the cut outs open you probably wouldn't throw a code. The only code you would throw would be the one saying your cats or bad but I don't think it would throw the code since you have less flow going through the cat.
1959 Buick Electra 4 Door Sedan 1959 Pontiac Star Chief 4 Door Hard Top 1976 W200 Dodge Power Wagon 383/ 727 4x4 1986 W100 Dodge Power Ram 318/ 4 speed 4x4 2007 Dodge Ram Single Cab Long Bed - almost no options except posi and HEMI! www.Pontiac-59.com |
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i think it will be okay since the front o2s do most of the fuel adjustments, if im not mistaken, i wanted my cutout installed before my cat but i think there was a language barrier and it got installed after the cat
 2003 hemi rc/sb      |
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 I am sure some one on here has that setup or has tried it atleast.2006 Black Mega Cab Current mods: Access tonneau cover, 3rd Strike CAI,Tekonsha PRIMUS Trailer Brake Controller, Sumitt Turbo Muffler, Tow Mirrors, Tranny Temp Gauge in SRT A Pillar Pending Mods: Tuner, Tint Front Windows, Nerf Bars   |
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"Michael" Truck of the Month July 2006  |
I am running dual cutouts with NO cats. So my cutouts are where my cats used to be. As long as your cutouts are after the front O2 sensors, there will be no problems.
____________________________________________________ MY RIDE 2004 1500 Hemi RCSB\Inertia Motorsports Spartan Cam\Inertia Motorsports CNC Ported 5.7 Heads\AEM Wideband A/F Gauge\SCT TUNED\Flex-A-Lite Electric Fan\180 Thermostat\Shorty Taylor Wires\NGK 5306 Plugs\aFe Cold Air Intake System\Long Tube Pacesetter Headers\Cat Delete\Dual DMH Electric Cutouts\Magnaflow X Pipe\True Duals with 2 AeroTurbine 3030's dumped\Motive 4.56 Gears with LSD\SharaDon Performance Stage II Transmission with Stage III Valve Body\Edge 3000 Billet Torque Converter\Cal Tracs\McGaughy's 2/4 Drop Click here for pics and couple vid's of my truck! |
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"Nathan" Florida Chapter Man of the Year 2008  |
Where are the front 02 sensors?
07 QC Just a little mod here and there         |
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"Michael" Truck of the Month July 2006 |
Check this picture out, the hole between the stock manifolds and the cats is wherer you will find the front 02 sensors.
 ____________________________________________________ MY RIDE 2004 1500 Hemi RCSB\Inertia Motorsports Spartan Cam\Inertia Motorsports CNC Ported 5.7 Heads\AEM Wideband A/F Gauge\SCT TUNED\Flex-A-Lite Electric Fan\180 Thermostat\Shorty Taylor Wires\NGK 5306 Plugs\aFe Cold Air Intake System\Long Tube Pacesetter Headers\Cat Delete\Dual DMH Electric Cutouts\Magnaflow X Pipe\True Duals with 2 AeroTurbine 3030's dumped\Motive 4.56 Gears with LSD\SharaDon Performance Stage II Transmission with Stage III Valve Body\Edge 3000 Billet Torque Converter\Cal Tracs\McGaughy's 2/4 Drop Click here for pics and couple vid's of my truck! |
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Gosh the stock manifolds look even more restrictive once you have them laying there like in your picture lol.
08 QC 4x4 DiabloSport u7137 K&N drop in Flowmaster exhaust and plasmaglows |
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They are the worst manifolds I have ever seen. The stock manifolds on my 59 pontiac looked better than those.
1959 Buick Electra 4 Door Sedan 1959 Pontiac Star Chief 4 Door Hard Top 1976 W200 Dodge Power Wagon 383/ 727 4x4 1986 W100 Dodge Power Ram 318/ 4 speed 4x4 2007 Dodge Ram Single Cab Long Bed - almost no options except posi and HEMI! www.Pontiac-59.com |
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