EFI Archives - Engine Builder Magazine
Holley Sniper 2 EFI

Holley’s Sniper 2 EFI ushers in a wide range of new technologies and features.

Holley Sniper 2 EFI
Howell EFI Launches New Website and Promotions

Howell EFI, a leading manufacturer of electronic fuel injection for older pre-computer vehicles of all types, has newly launched a user-friendly website, as well as introduced free ground shipping on orders over $500 to the lower 48 states, and a March Madness sale of 10% off any order. The March Madness promotion begins March 5,

FuelTech FT600 EFI System

FuelTech’s FT600 EFI System is the perfect association between the ECU and the dashboard, making it a complete solution combining both features.

Speedmaster Introduces Chevy Gen V LT1 Downdraft EFI Intake Manifold System

Speedmaster® is set to unveil one of the company’s latest groundbreaking engine products at the 2023 SEMA Show – the Chevy Gen V LT1 Downdraft 8 Stack EFI Intake Manifold System. The completely polished manifold system will be entered into this year’s New Products Award competition as one of 30 new products from Speedmaster.  This

731 cid Outlaw 4.840 Bore Space Nitrous Engine

When it comes to building a 4.840″ bore space engine for drag racing, the class is limited on deck height and limited on bore space, but anything else pretty much goes. Pat Musi of Pat Musi Racing Engines recently finished development on his state-of-the-art 4.840 engine platform, and this 731 cid nitrous combo is freaking awesome!

Holley Sniper 2 EFI

No complex EFI conversions here, Holley has announced their new Sniper 2 EFI! Get your vehicle up and running in as little as four wires – battery, switched ignition, and RPM. Sniper is an ecosystem and is designed to support the needs of your build The only thing easier than the installation is the setup.

EFI Timing Control & its Advantages

No one can overstate the fact that EFI timing control has radically changed the ability for anyone to fully, and correctly, optimize an ignition timing curve, assuming they are interested in investing the time.

Hilborn-Injected 421 cid Small Block Chevy Engine

It doesn’t get much cooler than a bright red 1967 Chevy Nova… that is until you add a Hilborn stack-injected intake manifold onto a 421 cubic inch small block Chevy engine and stuff it between the frame rails! Built by David Senderhauf and Knowlton Thunderheads & Racing Engines and tuned by Starr Performance Tuning, Joshua Norris’ Nova is certified badass. Check it out.

Speed Density vs Alpha-N Tuning Strategies

Choosing the best strategy for your application will ensure that the correct fueling and spark event is applied to the engine.

EFI Sensors and Uses

EFI systems can employ numerous sensors to perform many tasks, including data acquisition, but this article will concentrate on only the required sensors.

Vortech Supercharged 572 cid Big Block Chevy Engine

When David Pearson of Little Evil Racing shows up at the track with his Pro 275 Foxbody Mustang, people fear him, and for good reason. David has set numerous 275 drag radial world records, and with a Vortech supercharged 572 cid big block Chevy in this Mustang, another record may fall!

Open Loop/Closed Loop and Learning

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.