I am installing MS v2.2 board with the relay board and the flyback board in my 78 280Z. I am using the TPS from a 91 300ZX, it has both the switch and pot type TPS in one package. I got the signal, return and 5V ref connected so that it reads correctly as the throttle is increased, but the calibration tool in Megatune v2.25 is giving me 13% - 85% rather than the 0% to 100% I expected. Is this normal or do I have a problem.
Thanks in advance,
Cliff Wagner
TPS calibration
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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).
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
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Gavin Williams
- MegaSquirt Newbie
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The calibration feature is just for the gauge in megatune. As long as the open and closed positions are within the range of the tps its fine.
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FoundSoul
- MegaSquirt Newbie
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When using speed dnesity the CPU doesn't care so much about throttle position-- just throttle changes for AE. And truthfully you can do MAP based AE and run without a TPS.
If you were running Alpha-N that would be different as TPS is used to calculate load. For speed density it isn't. MAP is.
As for your calibration issue I had a customer that built up a board this week and mixed up some parts... I think he put the wrong diode in D12. He had a very similar issue where he'd calibrate his TPS but then it wouldn't go the full range, just from like 30-70%. He looked over the board, found his mistake, fixed it, and now his TPS calibrates properly. Just a thought....
If you were running Alpha-N that would be different as TPS is used to calculate load. For speed density it isn't. MAP is.
As for your calibration issue I had a customer that built up a board this week and mixed up some parts... I think he put the wrong diode in D12. He had a very similar issue where he'd calibrate his TPS but then it wouldn't go the full range, just from like 30-70%. He looked over the board, found his mistake, fixed it, and now his TPS calibrates properly. Just a thought....
Jerry a.k.a. 'FoundSoul' /// **Now Available** MegaSquirtPNP full Plug-N-Play EMS for the 90-97 Mazda Miata
