Quote:
Originally Posted by TurboNova
With no cam sync, the engine does not know where #1 is so every time you start the engine it will look for a signal for #1 and may not quite get the firing order correct.
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So it actually does not revert to batch fire, it's just not properly sequenced. That is what I thought when I set it up originally. I figured since batch firing is not really timed to valve events, what harm could there be in a random sequential ? As a reminder, my thinking was to have less of a pressure spike in the rails. When I first built this set up, I installed magnets in the damper and made my own trigger bracket with a mini pick up that is the same as the MSD mini. The magnets I used were too small and would loose too much strength when they got up to engine temp. This would cause it to loose the crank signal and misfire. It took me a little while to figure out what was happening. Luckily, I was still testing my crank trigger set up and had not yet modified the distributor to be the cam signal. I simply changed the connector over to the distributor. At some point, I will fix my crank trigger and set it all up properly.
edit:
Brian, you have helped me before on the EFI101 site. Thanks !
I'd really like to see a data base of various EFI tune files with engine specs. I'd be happy to share mine (and take the heat about how crappy they are).