Re: misfire p3000 after catalytic converter replace
As long as your ground is on the same pipe your welding it will be fine. Never ground on the other side if you have true dual exhaust as you could cause arcing across the piston rings to cylinder wall.
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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