Thread: Hilborn 8 Stack Electronic Fuel Injection

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Tom,

First off, are you running a Cam Synch or DIS (what do you have in the distributor hole, and how is it setup in the Computer)? If not, you are not running the Injector in sequential mode, which has a history of doing exactly what you are suggesting-popping through the stacks. This means you are running it in batch fire, which will fire the Injector when it is not needed-sequential can help with that-

#2, are you running one EGT sensor or two? (the Holley can run two, which can give the Computer more resolution).

Have you adjusted the manifold and done the arc adjustment/synch?

Jerry, I know that Hilborn generally does not run a IAC (mine doesn't have one), and in discussions with Andy Starr, on a Hilborn C396 anyway, he says they do not use or need one for EFI.

Tom, If I were you I would call Andy Starr at Hilborn (he was in the California location last week, try there)-I believe next to Doug at Holley he is your best resource to fix this-

As for the idle after it warms up, obviously this is a seperate issue, as the Computer changes it's parameters when the coolant temp goes above a preset value (say, 180 degrees), so that can be adjusted, and you should be able to get it to idle correctly-

I found an outdated list of tuners in a Car Craft (?) Article (not many Holley tuners as it is the newest system out there), but again, either I would call Andy or the Tech line at Holley-they will help!