had same exact problem with TFI coil. cintacted MSD they said to isolate coil with rubber grommets, dd that and did not help anything. heard its common problem in mustang. i am returning mine to summit and going with the BLASTER SS, the re ine with the fine. requires a little more work to blot up and u cant use the stock connector, but i will give it a try. that BLASTER TFI noise was too much to get used to, annoyed the piss out of me!
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1990 GT,stock T-5,K&N w/o air silencer,March underdrives,FMS wires,timing@14*,PA Perf 130amp alt,Steeda Tri-Ax Shifter,Steeda adj quadrant/clutch cable/firewall adj,Centerforce II clutch,o/r x-pipe,Magnaflow SS catback,g-load brace, subframes,Bilstein struts/shocks,Autometer gauges, 136k and running strong!
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