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Old 06-10-2009, 06:16 AM   #1
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Default MS2 Extra - inputs input wanted / EGT?

Hi,

with my engine rebuild I got a EGT sensor installed into the exhaust manifold.

Now I want to log the EGTs with Megatune/MLV. At the moment it looks like I am out of useable inputs.

This is what my pinout looks like:



(yellow is how I used my in-/outputs)

Would you - use JS4 and leave the barometric correction alone (which is switched of anyway, due to the bad experiences here with the baro correction)?

Do I need other inputs than that - did I miss something?

I guess the EGT circuit as shown at the MS1 Extra manuals should work also with the MS2 Extra?

Thanks, Greets
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Old 06-10-2009, 09:48 AM   #2
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Yup. Gotta use either JS4 or JS5, meaning you can give up either knock or constant baro.
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Old 06-10-2009, 10:21 AM   #3
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I want to keep knock - just got myself a KnocksenseMS (as long as there is nothing more precise on the market)

So baro has to go...

Thanks!
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Old 06-10-2009, 10:38 AM   #4
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Quote:
Originally Posted by Zaphod View Post
(as long as there is nothing more precise on the market)
Turbo XS - KnockLite

J&S Electronics • SafeGuard

No first-hand experience with either of the above, but I can tell you from experience that the KSMS leaves something to be desired in terms of sensitivity vs. false indication.
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Old 06-10-2009, 10:52 AM   #5
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There is one other option, but it's going to take a lot of homebrew hardware right now - if you have a second chip with ADC converters, you can get it to talk to the MS over the CANBus and bring in up to 8 extra analog inputs.
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Old 06-10-2009, 11:10 AM   #6
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@Matt - as I just need 1 more input (or really jsut have to remove the baro correction) I will not need 8 more inputs. But thanks.

@Joe, I am waiting for the "Knock Detection with variable sensitivity over RPM" which is in development for quite a while now at msextra.com in the section Expansion boards. It should even be possible to use the OEM Miata NB knock sensor.
For now the KnocksenseMS has to do...
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