The stock fuel-pressure regulator found on the bottom of the injector plate is replaced with an adjustable unit. This allows for the fuel pressure to be adjusted over a range of 9 to 13 psi. By increasing fuel pressure you can enrich the fuel mixture to match the increased airflow of the new throttle body. |
An injector spacer is used between the injector plate and the throttle body. This spacer is said to increase airflow by 5-6 percent and to provide a wider injector spray pattern for better fuel atomization. |
Once the throttle-body has been assembled using a combination of new and original parts, it can be installed on the motor. First, install the throttle-body spacer from the kit with a gasket on each side, then bolt on your upgraded throttle-body. |
The final part in the kit is Turbo Citys Air Flow Enhancer. This unit is riveted to your air cleaner base and replaces the stock air-cleaner spacer. The tapered style is said to improve airflow to the throttle-body by 6-10 percent. |
Here is the new Hi-Flow throttle-body in place on our engine. It looks stock, but thats just an illusion. We even opted for a new pair of matched injectors, as one of ours was leaking. Although not part of the Powerpackage, this is a great option to consider. |
Everyone can use more horsepower. One example of a simple upgrade that provides more horsepower is the Powerpackage kit from Turbo City for 87-95 GM throttle-body fuel-injected GM engines.