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Old 06-23-2010, 11:05 PM
CHVYKLR's Avatar
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Join Date: Dec 2009
Location: Jax, FL
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Vehicle: 2009 Ram Crew 2WD
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CHVYKLR is a jewel in the roughCHVYKLR is a jewel in the roughCHVYKLR is a jewel in the rough

Originally Posted by doz View Post
The o2 sensor for the cats has NOTHING to do with the air/fuel ratio. There are o2s before the cats that do this.
Exactly so what you should do is buy an off-road (no cats) h-pipe/x-pipe or y-pipe if you are going to a single mufler because it will come with bungs prewelded for the rear O2s. Then take your truck to a tuner and get him to turn off the rear sensors so your truck runs in a "closed loop". No check engines lights then.

All the good longtube kits (Kooks, ARH, Dynatech) will come with O2 bungs welded in.
Turbo / Trans by L&M Customs (MGH)
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