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2 of 3 found the following review helpful:
This option is worth it. Nov 11, 2007
By Charles A. Pizagno Holley 534-54 Digital Pro-Jection Throttle Body Injection Closed Loop Kit
Get this if you are installing the Holley Pro Injection unit for converting a 2 bbl carb auto. It will make dialing in the elctronic unit mush easier ... and... likely will increase fuel mileage