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Rev ms3 basic in an nb1 with vvt swap

 
Old 01-15-2018, 07:38 PM
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Default Rev ms3 basic in an nb1 with vvt swap

Can you guys help me figure out why the ignition settings in my 03 with Rev ms3 basic are way different than my 2000, also with a Rev ms3 basic?

The ignition is set up rising edge on the nb1 and falling edge in the nb2. The tooth #1 angle (deg BTDC) is 0* in the nb1 ms and is 80* in the nb2 ms.

Most of the other differences are explainable, but this is really odd. The NB1 ran just fine on falling edge, and I think that is how the base map was delivered to me from Rev. The NB2 base map was already in the ecu, and after tuning makes 350/339 to the wheels fairly reliably.
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Old 01-16-2018, 04:22 AM
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Probably different board versions. They use different input circuits for the crank/cam, hence the need for the rising on one and falling on the other. Both however should require 3-6* of tooth #1 angle.
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Originally Posted by ninerwfo View Post
The “into to megasquirt thread” mentions that the MS3 basic has 5 inputs with built in pull up resistors - and I was just wondering why it would have so many, while the MS3Pro PnP has just 2 (with no pull ups?)
MS Labs: Plug and Play Megasquirt ECUs for ANY 90-05 Miata (NA, NB1, NB2 w/VVT, MSM), including basemaps to get you started ASAP. PM me or email or details.
For support on MS Labs ECUs: Please email, be sure to include the unit's serial number and include a datalog and your current map.
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Old 01-16-2018, 03:07 PM
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Originally Posted by Reverant View Post
Probably different board versions. They use different input circuits for the crank/cam, hence the need for the rising on one and falling on the other. Both however should require 3-6* of tooth #1 angle.
thanks for the replu. Did you get my email about the base map for this ecu?
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Old 01-16-2018, 03:42 PM
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Replied.
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Originally Posted by ninerwfo View Post
The “into to megasquirt thread” mentions that the MS3 basic has 5 inputs with built in pull up resistors - and I was just wondering why it would have so many, while the MS3Pro PnP has just 2 (with no pull ups?)
MS Labs: Plug and Play Megasquirt ECUs for ANY 90-05 Miata (NA, NB1, NB2 w/VVT, MSM), including basemaps to get you started ASAP. PM me or email or details.
For support on MS Labs ECUs: Please email, be sure to include the unit's serial number and include a datalog and your current map.
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Old 01-16-2018, 04:09 PM
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Originally Posted by Reverant View Post
Replied.
Fantastic! Thanks!
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