A friend of mine swapped from msd to Jacobs and said his performance or gas mileage did not change a bit. For the money if you are going to get an ignition I would get the msd. Another friend of mine who owns a mustang performance shop (HP performance) said that the Jacobs are junk; he knows his **** so I believe him. I have to agree with bada$$lx and texsn95.
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James Cox
nochevy@hotmail.com
1991 Mustang LX
12.565 @109.38mph 1.764 60ft