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FiTech EFI Systems
Pontiac V8 FiTech EFI Systems
ECU On the Throttle Body — FiTech EFI Systems for Pontiac V8s
FiTech EFI Systems put the ECU on the throttle body itself. That means no hole in the firewall, no harness draped across the engine, and spark control without an external box or a special distributor. A built-in fuel pressure regulator and a touchscreen hand-held handle setup, and the self-learning strategy does the rest as you drive.
Butler stocks the Go EFI 4 in bright and black, the Power Adder versions for boost and nitrous, the eight-injector Go EFI 8, and the Go EFI Tri-Power three-barrel system with its linkage kit.
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1. Go EFI 4: the baseline
Rated at 600 HP but suitable for engines from 200hp through 600hp, the Go EFI 4 fits any four-barrel intake manifold and replaces any four-barrel carburetor. It is the self-contained answer for an everyday driver through a weekend street machine or bracket car.
| Self-contained | The ECU is mounted on the throttle body, which is what keeps the install clean. It is also the only computer-mounted throttle body that offers spark control without an external spark box or a special distributor. |
| Fuel control | Four flow matched injectors, a 1 BAR internal MAP sensor, a built-in pressure regulator and wet flow annular discharge for complete atomization. |
| In the box | Die-cast throttle body, hand-held controller with cable and windshield mount, O2 sensor and bung kit, CTS sensor and adapter, connectors, return plug, mini USB cable and a gasket kit. |
| Air cleaner | Use the same size air cleaner you would run on a four-barrel carburetor. Nothing changes up top. |
2. Power Adder: what the 2.5 BAR sensor buys
The Power Adder version looks the same and is a different system where it matters. It is also the right buy if a power adder is only a maybe.
| Boost | A 2.5 BAR internal MAP sensor and support for 25 lbs of boost straight out of the box, in a blow-through turbo or blower application or on a single roots style supercharger. |
| Nitrous | Supports a single stage of wet nitrous with control over air/fuel ratio and ignition timing, including boost and nitrous timing retard. |
| Tuning depth | Two fan control channels, air/fuel ratio tuning and pro-tuning laptop software, none of which the standard Go EFI 4 includes. |
| Same fuel capacity | Still four flow matched injectors, still rated to 600 HP. The Power Adder buys control, not injector capacity. |
3. Go EFI 8 when four injectors run out
| Capacity | Eight high-flow injectors capable of fueling 1200 HP, and the annular discharge design steps up to 20 jet streams to handle the flow. It works from 250 HP to 1200 HP, so it is not a race-only part. |
| Standard features | Data-logging and pro-tuning software come standard, along with the 2.5 BAR MAP sensor, 25 lbs of boost capability, nitrous support and ignition timing control. |
| Finish | Bright and matte black versions of both the Go EFI 4 and Go EFI 8 Power Adder systems are stocked. |
4. Tri-Power, and the fuel pressure every FiTech needs
| Go EFI Tri-Power | Three 500 CFM throttle bodies in classic carburetor gold finish, self-learning, good for up to 600hp on non-boosted engines only. The linkage kit is sold separately and is highly recommended. Pontiac fitment needs adapters, which is covered on the Tri-Power EFI Systems page. |
| 58 PSI, without exception | Every FiTech system on this page needs a fuel delivery system providing 58 PSI. A pump, fuel lines, a fuel filter and a fuel pressure regulator are required and are not in the box. |
| Where to get it | Butler's EFI Solution systems, EFI fuel tanks and high pressure Power Surge pumps are built to feed these, and a Complete EFI Solution kit bundles the Go EFI 4 with an EFI-ready tank and in-tank fuel system. |
These systems are not legal for use on pollution controlled vehicles and are intended for cars that do not require emission controls. Size by injector count first, decide on boost second, and get the fuel system sorted before the throttle body shows up.
Not sure what your Pontiac needs?
Call our tech team at 866-762-7527. Tell us your engine, heads, car, and power goal, and we will put the parts together as one combination that works.