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Old 12-18-2013, 01:01 AM
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HUMTECH HUMTECH is offline
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Default Re: Weld On vs Slip On Muffler Question

No if you remove or gut the cats you need the o2 simulators in rear sensor location for engine to perform correctly. If you gut the cats and leave original o2 sensors light will come on and performance and fuel mileage will suffer
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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