Quote:
Originally Posted by TMS
4) Input voltage ramp-in trigger - This is where a 2nd person comes in handy. Turn the ignition on with engine off. Turn Dip switch 1 on to go into programming mode. With HPTuners VCMScanner connected (or whatever tuner you are using), monitor the "Accelerator Pedal Position" channel. Push accelerator pedal down until you reach as close to 50% on this channel (pedal should be about half way down). Now while one of you is holding the pedal steady at 50% have the second set of hands turn the "Adjust Input Trigger" dial on the JMS unit up or down until the base voltage of 14.4V begins to just start ramping up. Once that dial is set, test your ramp-in to make sure everything works properly. Simply let off of the accelerator pedal. Have your partner watch the voltmeter. It should stay steady at about 14.4V. then slowly press the pedal down until you get to 50%. 0%-50% throttle should stay at 14.4V. Once you go above 50%, the voltmeter should start registering an increase in voltage. Have your helper call out the voltage while you keep pressing the pedal down. Your partner should see the voltage climb up to and max out at 17.47v or so (whatever the max voltage ended up being on the previous step). It will likely max out somewhere between 75% and 80% throttle position which is perfect. Then, as one final test, just mash the pedal to the floor and make sure the voltage goes to 17.47v. Now make sure you turn dipswitch 1 off to save your settings (before you kill the ignition).
You're Done!
Hope this helps.
Trevor
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I finished my Edelbrock 2650 install, and I'm working on getting the JMS setup. I completed the first 3 steps, but on step 4 I get a constant 32% throttle position, with the ignition on and the engine off. I tried both the SCT tuner that came with the Edelbrock kit, as well as an AutoXray scan tool that I have, and I get the same 32% throttle position, regardless of how far I press the pedal.
Am I missing something?
How sensitive are the pots/dials? The output voltage dial is pretty close to the same position that the one in the How-To on Jannetty's website is. If I set the Input Trigger dial to the same position as the How-To (just shy of the 12:00 position), will that get me what I need?