Bench Testing ecm-Please Read

[Clive Apps Techno-Logicals 416 510 0020]

> 
> >>  Shortly I'll be able to fire up an ecm with a rpm input, VSS, tps,
> >>coolant, IAT, map, and hopefully a closed loop O2.  Then at the
> >>injector/ign end I'll have a dual trace scope, and a recorder type
> >>scanner at the aldl.
> >>  So then I'll be able to verify prom locations, and net res.
> >>My question then is this,  What type/name/nomenclature/devise
> >>would allow me to change the prom without having to reburn it.
> >>An emulator would but that is quessing blindly for addresses right?.
> >>  Would it take a laptop to drive, this other devise?.
> >>  Has anyone tried the above?.  I imagine gm has exactly what I
> >>need but wouldn't give me one, even for educational use..
> >>  Other than needing 3 more O2 inputs would a OBDII ecm need
> >>anything more in the way of inputs?.
> >>  Cheers


a generic prome emulator is a few 100$
these can work from parallel/serial or internal chassis boards
they do not require a fast computer
since they can be programmed on the fly they allow real time tweaking
do a web search for in circuit emulators and see what you find

Clive