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131 0207 Efi 10 Z - Photo 9027343

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  • The throttle-cable guide is bolted onto the base of the throttle body using one of the mounting bolts. The new throttle cable is mounted to the bracket and connected to the throttle. The other end of the throttle cable is routed away from hot or moving parts and connected to the end of the pedal rod as it comes out of the firewall. All of the original throttle-linkage transfer rods are removed, since the cable makes them obsolete. The throttle pedal-rod end may need to be modified on some applications by removing the linkage pivot ball.
The throttle-cable guide is bolted onto the base of the throttle body using one of the mounting bolts. The new throttle cable is mounted to the bracket and connected to the throttle. The other end of the throttle cable is routed away from hot or moving parts and connected to the end of the pedal rod as it comes out of the firewall. All of the original throttle-linkage transfer rods are removed, since the cable makes them obsolete. The throttle pedal-rod end may need to be modified on some applications by removing the linkage pivot ball.
131 0207 efi 01 z 131 0207 efi 01 z Turbo City provides a complete system that includes a throttle body, a distributor, sensors, a harness, and everything else you need to complete your fuel injection upgrade. The upgrade to EFI begins by cranking the engine to top dead center (TDC) on the number one cylinder, and then disconnecting the battery so that the motor can't be accidentally cranked over later. Next, the battery and the distributor are removed. When removing the distributor, note the position of the rotor. This is required so that you can index the new distributor correctly. If you don't get it in right, the motor will run poorly or not at all. Once the distributor is out, you will need to remove the air cleaner, carburetor, and any spacers or adapters under the carb. All you want to see is the manifold opening, because the new components will replace everything from there up. The stock ignition coil and igniter module can be removed and tossed in the recycle bin. It's best to upgrade to a high-output aftermarket coil. However, if you are on a budget, you can reuse the stock ignition coil until your next paycheck. We kept the Toyota coil to get a truer idea of the performance gained from the EFI upgrade only, but trashed it after crunching the numbers. This shows a comparison of the stock distributor (right) and the Up And Over Innovations modified GM electronic distributor. If you look closely, you'll notice that the new distributor has no vacuum advance. The computer (ECU) now handles all the ignition advance and retard functions. This distributor is slightly taller than the stock unit and might interfere with some dual battery trays. If it does, modify the tray. It's worth the effort to get EFI. Turbo City uses a GM ECU for reliability, durability, and programmability. Turbo City has off-the-shelf, basic PROM chips calibrated to run well in most applications. Each EFI package has a PROM tuned for the vehicle requirements based on application, gearing, and other specifics provided by the customer. Fine-tuning can be done with a call or two, or you can take your truck to Turbo City in Orange, California. The ECU should be mounted in a dry location. We chose to mount it in the glovebox. The throttle-body adapter plate is bolted to the intake manifold and then the throttle body is bolted on top of this. Install the gaskets between the adapter and the manifold and between the throttle body and adapter. If you don't, you'll get a ghastly vacuum leak.
The ECU harness has a large plug on one end to connect the motor and sensors with the computer. Since we had previously removed the heater and blower-motor assembly, we ran the wiring harness through the block-off plate that covered the stock hole in the firewall. Turbo City installed a large grommet to prevent chafing of the wires. If you still have the stock heater, you'll need to cut a hole in the firewall to pass the ECU plug and harness through. The throttle-cable guide is bolted onto the base of the throttle body using one of the mounting bolts. The new throttle cable is mounted to the bracket and connected to the throttle. The other end of the throttle cable is routed away from hot or moving parts and connected to the end of the pedal rod as it comes out of the firewall. All of the original throttle-linkage transfer rods are removed, since the cable makes them obsolete. The throttle pedal-rod end may need to be modified on some applications by removing the linkage pivot ball. The coolant temperature sensor (CTS) must be installed in the side of the thermostat housing in place of the stock vacuum sensor. This is a good time to drain and replace the coolant in the motor. After all, who can remember the last time they had a fresh 50/50 mix in the radiator? The manifold absolute pressure (MAP) sensor is one of the critical components of the computer feedback system. In our application it was mounted to the valve cover using the supplied kit hardware for ease of installation, and a hose connects it to the throttle body. Other sensors are mounted to the motor or firewall as required. The O2 sensor is installed in the exhaust pipe just after the collector. This component tells the computer how much unburnt fuel is in the exhaust so that it can adjust the air/fuel ratio to the ideal 14.7:1. This ratio provides the best power and economy in most situations. You can have the O2 sensor bung welded in by a muffler shop before you begin the conversion if you don't have welding equipment. This is the only welding required. The stock mechanical fuel pump is removed and replaced with a block-off plate, with the knock sensor mounted to it. The new EFI fuel pump should be mounted as close to the tank output as possible. The fuel pump is mounted using the supplied vibration-dampening clamps. The fuel filter shown here is mounted between the fuel tank and the fuel pump. Any fuel filter mounted downstream from the fuel pump must be a high-pressure type and use the appropriate high-pressure EFI hose and clamps. The new electronic distributor must be dropped into the block so that the rotor is aligned the same orientation as the original. We had Turbo City install premium sparkplug wires from DUI. These wires are pre-cut to length and numbered for ease of use. Notice the clearance between the distributor and the dual batteries--there is plenty of room using this system, but it might not be in all dual battery systems. The completed package mounted with the throttle body in place and the new K&N air cleaner mounted on top looks trick. While the filter looks small, the K&N passes enough air for a ski boat at wide-open throttle. <br>
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