Originally Posted by
1project2many
Why do you need to bore a precision hole for a distributor? Did you ask the ecm? Because as far as I'm aware it only knows pules in, wait, pulse out. If you could get an aftermarket module to replace the distributor or even a Northstar ignition the ecm would operate it just fine. (Side note: There's much less "precision" to the distributor hole than you may guess. Years ago there were a couple of folks what were converting LT1 manifolds to use with standard heads and the pictures of their work were, umm, amazing to say the least.)
Why does SFI "ease low speed tuning?" This is completely baffling?? You have a device delivering fuel to an intake port. Whether the fuel is delivered in 1, 4, or 8 pulses it's still delivering fuel. And you still have the task of matching up the fuel delivery to the airflow using instrumentation and SOP gauges. If you think about it, carburetors are continuous flow devices so that should make them nearly impossible to work with.
Actually, this is done for emissions purposes. And there are some tradeoffs. You loose heating and vaporization in the intake port when you move away from batch fire. So typically fuel is injected at higher pressure through smaller holes in order to create smaller fuel droplets. This allows the heat generated during compression and ignition to substitute for time spent in the intake port. There is some advantage for OEM's trying to meet CAFE and emissions standards but i think it's safe to say your car will not suffer by using batch fire strategy.
Sorry if I sound like I'm beating you up. Seems like folks can get stuck thinking along specific lines. The only ecm's I'm aware of that will fulfill all your requirements and wishes are 01228331, 16168001, 16163993, and 16196394. I believe they are made of unobtanium.
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