ECM Test Bench

[EagleMark]

The ATX, power supply from a desktop PC? Darn, never thought of that I have a couple laying here...

[RobertISaar]

yeah, they're quite useful. and push plenty of amperage for almost any DIY project.

[Tunedperformance]

So I finally decided to do a upgrade this last week too the jimstim, Full range on rpm to ecm limit and full vss range 1-255 mph. Runs off of ecm 5v reference.

[Six_Shooter]

Were you not able to go to ECM limit with the JimStim before? I have no issue going well beyond what the ECM is capable of with my JimStim.

I need to get around to building a VSS circuit...

[Tunedperformance]

I decided instead of buying a transstim to just build both in one. It cost me $25 to build. I think the transstim is $20 for the board and $15 for the parts from digikey plus shipping. The Jimstim did reach the ecm limit But I never put a tach on too see how much more it will go.

[Playtoy_18]

I built a bench harness this weekend.
Used an ATX from an old computer,relocated the switch and put it all in a pioneer reciever/dsp I gutted.
I plan to expand it with digital displays and some other stuff.
The rear rca plugs have been repurposed for the 5v power,and the speaker ports are prepped for 12v.
Still need to install led's as well as a rheostat.

[1project2many]

You've probably checked, but the PC power supplies often provide a pulsed DC signal and sometimes it's not a very clean one. Many 12V components will work with this but it can introduce a fair amount of noise when working with ecm's and sensors. I've found old 2 way radio power supplies to be excellent for use with ECM and other 12V powered items.

Hmmm... aren't you supposed to be doing "front and face" when it's slow? Pulling apart the network terminals to make a bench cable between customers is probably frowned on.