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Using MSII for ignition only
Posted: Fri Apr 05, 2013 9:24 am
by 8803
I am in the process of building a manifold for my throttle body and wondered if I could use the MSII for spark only and use the stock carburetor for fuel. This would only be temporary. Do I need a functioning TPS to do this or will the MSII do spark and advance with no feed back from other devices. I have working trigger wheel and all inputs in place and operating.
The same thing KamikazeTuner is doing with his flathead but a completely different motor.
Re: Using MSII for ignition only
Posted: Fri Apr 05, 2013 12:45 pm
by Matt Cramer
You can run ignition only without a TPS just fine. Just be sure to ground the TPS input.
Re: Using MSII for ignition only
Posted: Sat Apr 06, 2013 6:50 am
by 8803
Matt Cramer wrote:You can run ignition only without a TPS just fine. Just be sure to ground the TPS input.
Matt
What do you mean "ground the TPS input"? I have a TPS connected according to the wring diagram but it is no being rotated when I step on gas. I that what you mean?
David
Re: Using MSII for ignition only
Posted: Sat Apr 06, 2013 9:15 am
by DonTZ125
A floating TPS input can cause odd and annoying things to happen. Your initial post was about running without the various sensors, and you specifically mentioned running without a TPS. You can understand how Matt got the impression that you were running without a TPS ...
Re: Using MSII for ignition only
Posted: Sat Apr 06, 2013 9:33 am
by 8803
DonTZ125 wrote:A floating TPS input can cause odd and annoying things to happen. Your initial post was about running without the various sensors, and you specifically mentioned running without a TPS. You can understand how Matt got the impression that you were running without a TPS ...
Sorry for confusion. Matt said to tie the input to ground? What wires go to where? Should I jump pin 22 to ground?
Re: Using MSII for ignition only
Posted: Sat Apr 06, 2013 5:08 pm
by DonTZ125
Ground the TPS input pin at the MS *IF* you have no actual Throttle Position Sensor. You apparently have a TPS, so you don't need to ground the input pin.
Re: Using MSII for ignition only
Posted: Sun Apr 07, 2013 6:07 am
by 8803
DonTZ125 wrote:Ground the TPS input pin at the MS *IF* you have no actual Throttle Position Sensor. You apparently have a TPS, so you don't need to ground the input pin.
Many Thanks DonTZ125 and Matt