We Dig Deep Into The Latest EFI Systems on the Market Today

Super Easy EFI: Why your next carburetor might just be a fuel-injection system.

I’m of a particular generation. Well we all are, actually. But mine is the one whose auto shop teacher proclaimed that fuel injection would take over everything. And we found that patently comical. Fuel injection was more than just complex and costly back when Reagan was in office; it was entirely out of the realm of the garden-variety enthusiast. Sure, a few people whittled down OEM systems to work stand-alone; however, they were completely at the mercy of the few people in the country who could burn chips to make their systems work with relatively limited modified engines. So to us there was only one question: how on earth could fuel injection replace the simple and inexpensive carburetor? I mean, the idea sounded great and all but none of us were getting our hopes up about it coming true. Well, brothers and sisters, we can officially say it happened: the day of simple and inexpensive fuel injection is here.

FiTech had every one of its systems at the 2015 SEMA Show. The name is new but the company has significant roots in the injection-retrofit industry. About 15 years ago its principle, Ken Farrell, began introducing systems, the first inspired by the hot rodder’s favorite carburetor, the Stromberg 97. The brains within the company’s current self-learning systems are the result of a collaboration with Cal Poly engineers.

Some of the units accommodate supercharging, whether draw- or blow-through operation. Those units also handle wet nitrous injection but in a unique way, as the trigger with multiple conditions (engine speed, manifold pressure, etc.). Boost- and nitrous-enhanced versions also offer alternative spark and fuel maps. The systems also work with E85 fuel by configuring the ECU with the hand-held controller. All FiTech systems boast variable-speed fuel-pump drivers.

The big news for the budget-minded are two entries for less than $1,000. The really big news is the simple $795 Go Street model. But don’t confuse simple with unsophisticated. This unit shares most of its architecture with the other systems in the lineup. It just lacks some of the features like dual-fan control and special mapping for boost and nitrous applications. While it maintains idle speed to a user-set target, it won’t bump up idle speed for A/C clutch engagement. On the opposite end of the spectrum, FiTech applied the self-learning retrofit model to a port-injection system.

Go Street is the unit that has carburetors leaking little puddles in fear. FiTech kept prices low by eliminating features like ignition control, data logging, and optional laptop programming, and by supplying it with a one-color, joystick-controlled programmer. The company bills it as the entry-level carburetor replacement and the icing for a crate-engine cake.

As its name implies, Go EFI 600 supports as much as 600 hp. It also boasts the color touch screen controller, ignition control, data logging, optional laptop programming, and single-fan control. It’s also the company’s second model for less than a grand.

Power Adder 600 adds 25-psi boost and nitrous capability to the package. It does that by altering fuel and spark maps to suit supercharging (exhaust or mechanical) and nitrous injection. But more than respond to nitrous injection, everything in the Power Adder series can trigger nitrous based on various conditions. A second fan controlled independently from the primary fan comes with the package.

Power Adder 1200 doubles power capacity by doubling injector count (eight in one body). It also brings more sophistication to bear in the form of A/C idle compensation. Rather than merely maintain a target idle speed, it increases idle speed by a user-programmed amount whenever the A/C clutch engages.

Dual Quad is Go EFI 600 but with a second throttle body. Dual Quad Power Adder is Power Adder 1200 with a second throttle body.

Go Port 550 and 1050 are FiTech’s entries into the port-injected market. Functionally, they’re like the Go EFI 600 but with eight injectors mounted to the manifold. An arrangement with Edelbrock maintains one price respective of injector model regardless of manifold design.

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