98cobra+75280z Posted January 18, 2011 Share Posted January 18, 2011 I just finished building my MS1 v2.2 and stim board and have been playing around with megatune and tuner studio. It worked fine all weekend and all my gauges that correspond to the potentiometers on the stim board all work. However today i went and i thought that the firmware i had flashed onto the ecu was older, which turned out to be wrong, so i re-flashed the ecu with the MS extra 029y4 code. The problem i have now is when i open either tuner studio or megatune the tach doesn't work and only one LED lights up on my MS. The fuel pump says its off on megatune and tuner studio, however all the other gauges work like the O2 and TPS and CLT gauges. DID i mess something up or burn out the CPU chip. What could have caused my rpms to quit working when i re-flashed my MS. Thanks for any help Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted January 19, 2011 Share Posted January 19, 2011 Just checking - you didn't load an MSQ from a different firmware version by any chance, did you? That can scramble the firmware sometimes. Quote Link to comment Share on other sites More sharing options...
98cobra+75280z Posted January 19, 2011 Author Share Posted January 19, 2011 Just checking - you didn't load an MSQ from a different firmware version by any chance, did you? That can scramble the firmware sometimes. I don't believe i did.. but it is possible, i haven't got much experience with megasquirt and am not real comfortable with the tuning aspect. Is there a way i could check if i did load a different version or a way to start from scratch again and erase the mistake, if there is one? Quote Link to comment Share on other sites More sharing options...
Matt Cramer Posted January 21, 2011 Share Posted January 21, 2011 I don't believe i did.. but it is possible, i haven't got much experience with megasquirt and am not real comfortable with the tuning aspect. Is there a way i could check if i did load a different version or a way to start from scratch again and erase the mistake, if there is one? You can open the MSQ that you tried to load to the ECU with NotePad and see what version it's for. Quote Link to comment Share on other sites More sharing options...
claude Posted January 21, 2011 Share Posted January 21, 2011 Is there a way i could check if i did load a different version or a way to start from scratch again and erase the mistake, if there is one? I don't know how to check if the code is scrambled but loading the firmware again will overwrite a mistake if there is one. Have you started tuning at all because you would lose your settings when you reflash the code and have to start from scratch. When you connect to the ecu with TunerStudio after upgrading the code I think it prompts you to load your offline settings which could be the old code's msq. Maybe you loaded a msq from an older firmware version without realising it this way. TunerStudio saves your MSQ whenever you close tunerstudio and checks it next time you connect to an ecu. I start a new project in tunerstudio when I upgrade the code and start from the default msq in the zip folder you download with the code in it. That way you can still open the older project in offline mode to look at your previous settings and in the new project you won't need to worry if the old msq is compatible between the new and old code versions. I just input all the settings manually in the new project. You can use table export and import between code versions with the VE & spark tables etc. If you're using megatune, manually save your msq before loading the firmware because it doesn't save it for you automatically like tunerstudio. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.