Re: Check Engine Light going on - need some help
up stream sensors measure fuel downstream are there to measure if the cats are cleaning the exhaust fumes.with out the upstream sensors inthe right spot they wont measure fuel
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347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters
^best et so far 11.6 1.61 60ft coming soon 9sec et's 
1992 mustang gt
2001 gmc 1500 4x4
78 century boat
92 skidoo
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