FROM THE DRIVER SEAT
Prior to the installation, we took the car to W.O.T. Performance Products in Riverside, California, to have it run on their chassis dyno. After the installation was complete, and enough driving was done to have the "Adaptive Learning" feature work its magic, we took it back for a follow up dyno test.
Here Are The Results:
Peak to peak torque was improved by 9 lb-ft as it went from 281 to 290 lb-ft. That may not sound like much, but peak numbers do not tell the whole story. Average torque from roughly 2,500 to 5,000 rpm improved by 14 lb-ft and at 4,200 it was a whopping 25 lb-ft better. Peak horsepower took a major leap from 211 at about 4,700 rpm, to 238 at about 4,900 rpm, a 27 hp gain. Average horsepower gain over the full pull was 16 horsepower. Best of all, while the power nosed over with the carburetor at 4,700, it was still going up at 5,000 with the Powerjection III. While the car was on the dyno after the EFI installation, we dropped the total timing from 38-degrees to 32-degrees. This made a slight improvement in peak power of one horsepower going to 239, but peak torque jumped an impressive 24 lb-ft to 314. The net result of this is that although peak power didn't change much, power was up significantly up throughout the rpm range.
Here Are Some Examples:
Before the timing change, at 3,000 rpm there was almost no difference before and after the EFI change. After the timing was reduced, horsepower increased by 16 horsepower at 3,000. At 3,800 the difference was about 5 horsepower and after the timing change the difference was about 18 horsepower. The owner of the El Camino reported that all around drivability and throttle response was dramatically improved. The car even started better than before and of course there will be no more choke issues on cold mornings. David said it is like driving a totally different car and the amount of improvement is way beyond his wildest expectations.
YOUR QUESTIONS ANSWERED
Degree Of Difficulty: Beginner
Time Spent Working: 4 Hourse
Tools Needed:
Standard sockets, ratchet, drill and bits, flat screwdriverpipe sealant
Parts Used:
Professional Products Powerjection III Fuel-Injection Kit $1,545.95
Professional Products Fuel Delivery & Return Kit $242.00
Total: $1,787.95
(prices from summit racing)