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jetape

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jetape last won the day on November 21 2019

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  1. With the G4x here, does that mean we will not be seeing any new features added to G4+ firmware? Just wondering if I should hold out any hope of having a custom Rotax 4Tec trigger implementation in the G4+. I submitted a request ticket last August but no updates to the ticket since.
  2. Do you have a oil pressure sensor hooked up? Once you have that you can use GP RPM Limit table to configure rpm limit based on oil pressure.
  3. It works with Vipec and Vipec is G4+ internally. PC Link software has a pre-set for SeaDoo CAN-BUS, I guess in theory if you wired up some other G4+ ECU it would work but Vipec plugs into the stock SeaDoo 4tec/ACE ecu harness and even comes with lanyard replacement to deal with the RF based ones on the 2016+ models. One thing to note is Vipec does not monitor oil pressure, something to keep in mind if that's important to you I added my own sensor.
  4. This is basically just updated 4tec motor. The throttle is analog. I had it running for a while but then out of the blue I started having trigger issue and it was very hard to start. Basically because of the 3-cylinder configuration on these motors the trigger signal is messy, it speeds up and slows down during cranking. I submitted a ticket for a pre-defined trigger option but my hopes are very low that it will ever get looked at, just not enough interest. BTW Vipec = Link ECU so you could grab vipec and have plug&play setup, keep stock dash with iBR functionality. Removing iBR means you lose trim control, not ideal for racing.
  5. jetape

    Hard time starting

    What's weird is that it's gotten worse over time. Can these sensors lose performance but not totally fail? Stock ECU would not start if they're were broken but it does and Link has taken a massive turn for the worse.
  6. jetape

    Hard time starting

    Yeah it makes cranking not as rough but the ECU is just not picking up a steady crank rpm. Looks like it's back to stock ECU flashing for me. Hopefully tech people will look at my ticket and build a trigger preset for these motors into the firmware.
  7. jetape

    Hard time starting

    Interesting, will give that a shot.
  8. jetape

    Hard time starting

    Yeah I looked at that already, there's a 2500 max value
  9. jetape

    Hard time starting

    I emailed tech support and they opened a ticket, not sure what that means exactly. Did some experimenting with the timing at cranking RPM, it lessened the nasty sounds but I think there's build in logic that disengages the start status when RPM crosses it. With the ECU seeing garbage RPM spikes to 4k during cranking it's causing the starter to disengage and engage even though the start is held. Here is a pic how cranking looks, no steady RPM detected by the ecu and all those spikes are causing starter cycle, rough stuff. Still not sure how last season it seemed to start a lot better. Now it doesn't even see a steady cranking RPM, I could blame a bad sensor but the stock ECU starts just fine.
  10. Crank Enrichment (to get it started at various coolant temps) and Warm Up Enrichment (to keep it happy after it starts while it warms up) might be something you want to look at.
  11. jetape

    Hard time starting

    OK I just emailed them giving a short explanation and pointing to the two threads on the issue. Interesting, I'll give that a try, at this point I'd just like to start the motor without grinding the gears, it's nasty. Will most likely pull the motor over winter to inspect things from all these kick backs.
  12. Since I'm not getting any bite in my own thread I'm bumping this one. Any chance of a firmware based "fix" for the Rotax 4tec cranking trigger issues? I'm experiencing the same issue with kickbacks and very poor and inconsistent starts.
  13. jetape

    Hard time starting

    Here are logs of back to back start attempts on a "cold" engine that was sitting for 24h. Exact same settings, the good start happened on first attempt, second attempt was 30 seconds after the first attempt.
  14. jetape

    Hard time starting

    What a tease, I switched to Rising and the first attempt to start was perfect, it fired up instantly with zero trigger errors. I'm like wow no way ...tried another start and it's back to garbage Tried changing trigger voltages to various levels, different filtering, nope nothing. Once in a blue moon it will fire up perfectly as if a lottery wheel turned and it was just lined up that one time. Next attempt will be trash. This is so rough on the starter and the starter gear on the flywheel on these motors.
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