Rev ms3 basic in an nb1 with vvt swap
01-15-2018, 07:38 PM
#1
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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.
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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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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