HOW TO: Cheapy Variable TPS for Megasquirt

[Paulus]

Sure, but cl idle works best when it knows the position of the TPS - without it, the idle code in the ecu isn't going to function correctly. Obviously you can try to run the car without the idle valve being used to manage AC, electrical loads, power steering etc... but it won't be as good as the CL idle code to get right.

Good point - AC in particular, i'd forgotten that. I ended up going with a heavier flywheel lol

[naimad27]

so im having an issue, iv made my vtps from a new vl auto one , and iv wired it up but when i go to calibrate tps its just 0 and 0 its not picking it up.
also when i plug the stock unit back on it still wont work, is there something i have to change ? its a mspnp2 3.3.1

[Magpie]

Did you bench test it?

[naimad27]

yes i have i even just rechecked it , and it dose the same with the stock tps ,