|Originally posted by stickpony:|
i'm curious, what with all the big hooplah over alternate ECM setups on various engines not designed to go into the fiero, has anyone thought about removing the distributor on a 4.9L caddy motor and converting it to DIS? Everyone's thoughts on this
Not sure what you mean by all the hooplah... The 4.9 is the closest to a bolt-in (and subsequent Northstar) using the Fiero manual transmission. Since the Cadillac never came with a manual, there are different ways to "skin a cat" as the saying goes.
With my project, I plan on utilizing the 1227730 ECM using the Saturn Knock Sensor, a truck TBI throttle body for IAC, a tweaked 5.0L F-Body BIN and work from there. Why? Because the F-Body BIN has been thoroughly hacked and is an ECM, not PCM like the Caddy, and it is the setup I feel will get me closest to "right" without spending a ton of money to build, write, wire, etc. my own system. It's still factory reliable parts, readily available anywhere, just like the Caddy.
The Caddy is considered a Powertrain Control Module, because it controls engine and transmission. The possible gains seen with SFI in the Caddy ECM versus the Batch-Fire system will most likely be negated by the PCM looking for other parameters that don't exist with a manual transmission. Again, if I were swapping the caddy auto with the engine, then I'd use the caddy PCM, in a heartbeat.
The short of it is I see no need to try to reinvent the wheel. The setup mentioned above seems to work fine, and works closest to an ideal setup. Just my 2 cents.