We have a 2000 Ford Ranger 3.0L V-6 that has 100,000 miles, it started to miss on NO> 6 cyl.. we rebuilt both heads with seats, valves, quides and springs. It didn't increase the power very much. It has standard size tires. It has a catalytic converter plus an exhause filter with a sensor ahead of the cat and one behind the ex filter. This pickup runs on a large ranch and dirt back roads so smog check in N.E. Oregon is not a problem. The exhaust creeps out of the tail pipe on a cool morning. Can this exhause be modified so it will have the same power as our 2.9L V-6 with over 250,000 miles and not a wrench on the motor?
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