Closed-loop control can be programmed to either add or subtract up to a certain percentage of fuel in order for the engine to reach the target air/fuel ratio.
Electronic Fuel Injection (EFI) is all the rage today and rightfully so. EFI has many advantages that allow us to dial in the fuel in a dramatically more precise fashion than was ever possible with a carburetor. One of the tools at our disposal is the closed loop algorithm where the target air/fuel ratio commanded in the ECU is compared to the actual air/fuel ratio read by the O2 sensor. If the two do not match, the ECU makes small changes by either adding or subtracting from the commanded fuel in the fuel table to equalize the two.
Despite not being a fancy, state-of-the-art set up, Mike and his team at H&H have a great thing going. The equipment does exactly what it needs to, his team is experienced and the shop has built thousands of vintage engines for customers everywhere!
This shop’s dedication to quality engine work, its growth, its machining capabilities and its impact in the diesel industry, all make Choate Engineering Performance well deserving of Engine Builder’s and Autolite’s 2022 America’s Best Diesel Engine Shop award.
The 4 Piston Racing facility in Danville, IN houses two buildings – one is 12,000 sq.-ft. and the other is 2,500 sq.-ft. The shop is very heavily focused on Honda cylinder heads and engine work to the tune of 300+ engines and 1,000 cylinder heads annually!
We recently spoke to Randy about his PERA presidency and what some of the biggest hurdles are facing the engine remanufacturing industry right now.
Mattie Graves competes in the Outlaw Diesel Super Series (ODSS) dragster class, and is the only female doing so in a class that already has very few competitors in general. Find out more about this up and coming diesel drag racing star.
She got her drag racing license before she got her regular license, and that tells you everything you need to know about Johnna Dunn. She’s a drag racer and clutch specialist for her grandfather’s NHRA Top Fuel Funny Car team, Jim Dunn Racing.
A veteran of the military, a former track star, an MMA fighter, Motocross and ATV racer, and now a Monster Jam driver, Kayla Blood has packed a lot into her still growing career. Now the driver of Soldier Fortune, she strives to make a name for herself and for other women looking to make motorsports a career.