"To this point I've never had an EFI system on one of my engines make as much horsepower as we can make using carburetors. EFI engines generally make about 20 horsepower less and about the same torque," Sonny stated. "But I'll tell you this, an EFI motor that makes within 20 horsepower of a carbureted motor will put a race car down the track quicker than the carbureted motor."

Sonny says he confirmed this using an NHRA Comp eliminator B/Altered race car a couple of years back. They ran the car with a carbureted engine and then replaced the carbs with an EFI system and the car picked up some ET.

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"What we found was that using EFI induction any engine accelerates quicker than it does with carburetors. It's especially noticeable on the gear change. The engine has no hesitation on the gear change and as a result we saw consistently better ETs with EFI," Sonny told DRO.

The engine we saw on the dyno is already at the Jeg's facility in Ohio as we speak, where it is being installed in the team’s Cavalier and will be taken to Norwalk, Ohio, for testing.

Once testing is completed the team is headed to the next NMCA PRO Edelbrock event to do battle with other EFI proponents, Pat Musi and Mark Dantoni. Pat Musi and Mark Dantoni have had it all their way on the NMCA circuit for a while but with Troy Coughlin joining the competition, there may be a new hitter in town.

Sonny makes a few adjustments on the 815 EFI motor in the dyno cell. Note the TFS brand, 5-inch throttle bodies on the engine for this test and the MSD ignition system. Sonny's uses an MSD-7 digital on all engines on the dyno.