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Save your money. Stock coils give the Hemi's all the spark that they need. Tons of folks racing with the stock units
 

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Discussion Starter #3
Thank you for the reply. However I have already purchased the coils and did have them on the car, however I did get a misfire. I then put the stock coils back on, that cured the misfire however though the performance dropped. It has been suggested that the coils need more voltage in order to work. There is supposed to be fix but i am not sure what it is. Hence my post. I can't get a refund on the coils so thats $700 cdn i spent.
 

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Discussion Starter #4
MSD acknowleged that the coils don't work very well on the Challengers. They told the store to refund my money, however the store only gives out a store credit, so now I have to figure out what I need next.
 
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