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Matt Cramer

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Everything posted by Matt Cramer

  1. Matt Cramer
    The VR trigger circuit is not intended to be wired to the negative terminal of the coil. I'm not sure how long it will last when wired up this way, but it's better to switch to the optoisolator circuit if you're running off the coil.
  2. Matt Cramer
    The best way to control the fan with MS1 is to add a mod for an extra relay control output. This link shows how it's done. http://www.msextra.com/doc/ms1extra/MS_Extra_Hardware_Manual.htm#outputs
  3. Matt Cramer
    Usually these engines need a trigger offset somewhere around 90 degrees. Could be your timing is so far off it's only sparking between the towers and not getting anywhere.
  4. Matt Cramer
    e_racer's write up is for MS2. MS1 can only use this for a fast idle output. However, if you use a 5 pin relay, you could set up the relay so that it turns the fan on when the fast idle relay output is off. The one thing I don't like about this is there is no hysteresis, so it will pulse the fan off and on if you're right at the fast idle temperature.
  5. Matt Cramer
    Spark at the coil but not at the #1 cylinder may mean cap and rotor damage, or it could be either your timing is off or the rotor is out of phase. What's your trigger angle at?
  6. Matt Cramer
    Is your fuel pressure doing OK while cranking?
  7. Matt Cramer
    First question - exactly what MS version are you running, with what firmware? Not all firmware versions support this very well.
  8. Matt Cramer
    Yep, this needs mods and MS2/Extra code. We have an example of one approach with Ford style trigger wheels covered on our site here: http://www.diyautotune.com/tech_articles/trigger_wheels_overview.htm
  9. Matt Cramer
    Try using Port Check - what firmware does it find?
  10. Matt Cramer
    Does the pulse width change as you decrease the VE?
  11. Matt Cramer
    Sure is! Unbolt the coils from the HPV-1, wire the coils and sensors to the MegaSquirt. One of our customers sent in a write up on how to convert a GM DIS module into a coil mounting bracket and it will probably work with the coils on the HPV-1; they are based on the GM coil design: http://www.diyautotune.com/diysotm/diysotm_2009-12.html
  12. Matt Cramer
    Nope. With the wheel decoder off, it will expect one pulse each time the cylinder fires - for a six cylinder engine, that's either a six tooth wheel in the distributor, or a three tooth crank trigger.
  13. Matt Cramer
    Do not use wheel decoding here - just use the 3 tooth wheel and set trigger teeth to 0 in order to turn off wheel decoding.
  14. Matt Cramer
    That does sound like warm up enrichment to me if it floods shortly after starting. The ECU will work correctly if set up for EDIS and the SAW signal is disconnected. It doesn't realize its output is missing.
  15. Matt Cramer
    That sounds like a heated narrow band... unless there's at least two more wires you didn't tell us about.
  16. Matt Cramer
    "Voltage too low for burning" is often a sign of corrupted firmware. Try reloading the firmware, but do not load the old MSQ. Importing VE and spark tables is fine, but the other settings should be changed by hand from the settings automatically loaded into the MS. That may fix several of the issues.
  17. Matt Cramer
    As long as you have a launch control input mod added, it'll work with any coil that doesn't have a mind of its own and keep firing if you cut the signal. The only systems that fall into this category are Ford's TFI and EDIS, and Toyota's VAST. LSx coils are just fine.
  18. Matt Cramer
    Probably not, but this could be a settings issue. Make sure you haven't accidentally put it in wheel decoder mode.
  19. Matt Cramer
    What sort of ignition are you running? Sounds like it's ignition related, so I'll need to know if MS *is* the ignition here.
  20. Matt Cramer
    Exactly what sort of ignition do you have?
  21. Matt Cramer
    The VR conditioner can handle up to around 100 volts. However, keep in mind that if you're amplifying the signal, you're also amplifiying the noise and may not solve anything.
  22. Matt Cramer
    Fixed duty should only be used with an MSD box or an ignition module with built in dwell control. Normally you should set it to "Dwell control." Running fixed duty with a BIP373 coil output can damage the coil... and with a VB921, it'll damage the VB921.
  23. Matt Cramer
    No, just the SD card internal logging. You'd need some sort of external device for wi-fi. Particularly since I can't imagine typical ECU mounting spots having good reception.
  24. Matt Cramer
    The signal looks OK with a volt meter. Are you able to get an RPM signal on a Stim?
  25. Matt Cramer
    Only the injectors and maybe the coils if you change that. Normal sensor inputs can be the same. Final pricing has not been decided on assembled units, but expect the base price to be somewhere around $100 to $250 more than a standard MS2 depending on whether you're going with the batch fire or sequential MS3. Sometimes an MS3 may be cheaper than an MS2 if you put a bunch of optional features on the MS2 that the MS3 has standard.
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