6 hole vs 7 hole injectors
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They are mainly personal preference. 6 holes will be dirtier than 7 holes. As well as SAC will be dirtier than VCO's. But you will get more power out of the SAC's. Not sure the size of the 6 holers but the 7 holers should be about 7x0.011 in size. Check out DAP's site They have good prices on their injectors.