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.
Using MSII for ignition only
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Using MSII for ignition only
1970 Honda N600 600cc Twin
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Matt Cramer
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Re: Using MSII for ignition only
You can run ignition only without a TPS just fine. Just be sure to ground the TPS input.
Re: Using MSII for ignition only
MattMatt Cramer wrote:You can run ignition only without a TPS just fine. Just be sure to ground the TPS input.
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
1970 Honda N600 600cc Twin
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DonTZ125
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Re: Using MSII for ignition only
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
Sorry for confusion. Matt said to tie the input to ground? What wires go to where? Should I jump pin 22 to ground?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 ...
1970 Honda N600 600cc Twin
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DonTZ125
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Re: Using MSII for ignition only
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
Many Thanks DonTZ125 and MattDonTZ125 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.
1970 Honda N600 600cc Twin