RPM limitation

[Flatblackfanatic]

Hey I am using tunerstudio MS and I am limited to an 8000rpm operating range, what if I want to run up to 10000rpm?
is this internal to the MSII or is it in the software?

[Bernard Fife]

Fbf,

The code is good (in theory) up to 65535 rpm.

8000 is not a limit, it is just the maximum on the gauge that TS shows. The controller will happily exceed that and nothing bad will happen because of the gauge. However, you can set the gauge to show whatever range you like. You edit the INI to do this. Using a text editor (like notepad.exe) find a line in the [GaugeConfigurations] section of the mainController.ini like this:

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   tachometer        = rpm,           "Engine Speed",       "RPM",     0,  8000,    300,   500, 5000, 6000, 0, 0

then change "8000" to 10000 or any other value you prefer. You can also change the "5000" and "6000" values too, if you want to alter the engine speeds at which the warning and danger colors are displayed on the gauge. So you might end up with something like this:

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   tachometer        = rpm,           "Engine Speed",       "RPM",     0, 10000,    300,   500, 9000, 9500, 0, 0

Save the file, then check that the gauge is configured how you prefer, and go and drive!

There is more info on the field values for the gauges in the INI itself.

Lance.

[Flatblackfanatic]

Perfect. Got it all set. now what about the ignition table? Is it just going to be course jumps between every 834rpm increment in my case or does the MSII compute the difference between the tables?

[Bernard Fife]

Fbf,

Megasquirt-II interpolates between the rpm and load bins for both fuel and spark advance, so the curves are smooth (to the limit of the digital resolution - typically many times higher than the actual value being computed). You can also move the rpm and load bins around to suit your application.

Lance.

[Flatblackfanatic]

Thanks, Lance.