Megasquirt or Stock PCM?
you might be asking yourself, what the fuck do i use?!
i have used both, they both work great in my opinion.
here is how i decide.
Do i want to use a GM electronic overdrive trans?
YES - use the stock computer and harness setup
NO - use a Microsquirt powered setup
here is why, there is no good way to easily make an 80e or 60e work the way i like it to with megasquirt.
the stock pcm shifts, locks, unlocks, handles all the electronic shifting and on top of this! it even runs the motor.
if you are picky and you absolutely have to have IDLE air control or closed loop fueling etc on your setup i would say stock computer is also better.
in reality if you have a manual trans, or th400 or something like that, the microsquirt is a better solution for a toy, it might not have idle air control out of the box, but the cars start and run fine, you just set the idle slightly high, or hold the gas pedal for 30 seconds if its super cold.
the benefit for a MS based computer is boost cut, anti lag launch control, and extremely simple fuel and spark tables.
the stock pcm can be insanely complicated with flashing and thousands of tables in the stock ecu, but if you build a similar setup to the tunes i have avaiable, just like the megasquirt tunes.
the car will run and you can go from there.
example of plug and play Microsquirt setup modified for 24x LS engines from EFI source (the owner is a friend of mine and we tested and tuned the harness and box for ls motors they work great)
http://www.efisource.com/shop/ls1-24x-modified-microsquirt-ecu-with-plug-and-play-harness/
example of stock pcm harness sales ( i have bought many harneses from them and they work great, also you can option them out etc)
