HFS-4 Q&A, application for your engine...

[Richard L]

Electromagnet clutch! great to incorpoarte the HFS-4 failsafe output to reduce boost. If you can get hold of a ECU pinout diagram, I can certainly make use of this.

W70/M30 run ~15-17% to fuel, this equates to a 1mm nozzle - untuned. Perhaps I was referring to allowing some capacity so that the tank does not run close to empty and start inotrducing air bubbles to the system. Takes time to purge them out.

There is little electronic to be concerned about, all the cables are pre-wired and terminated into a bunch of colour coded RJ type connetors. The rest is just bolting on the tank, pump and valves. Only the jet needed drill and tap. If you get the pre-assembled tank from Howerton, you just need to secure it down some where in the trunk.

If you can get hold of the wiring diagram, I can make a wiring drawing for your car.

Not sure about the teflon coating, they are the most inert matreial known to mankind, if souce pan is coated with them, spray a small amount of water moist is not going to kill it. Further more. During the life time of the engine, It must have swallowed gallons water from the humidified air, especially so on rainy days.