Matt Cramer
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Everything posted by Matt Cramer
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Please post both a screen shot of the port check program and the errors you are getting trying to load the code.
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V3.0 is the regular B&G code; the current MS1/Extra is 029y4 like you mentioned. D14 is a newer way of controlling spark, and doesn't need the HEI module.
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It's a rule of thumb. We sell injectors based on their maximum flow rate as that is the industry standard and easiest one for someone with a flow bench to measure, but our guidelines for sizing injectors and the horsepower charts on the injector catalog page assume an 85% duty cycle, which is the rule of thumb we typically use.
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The V3.0 and later Megasquirts have PWM current limiting that lets you run low impedance injectors without a resistor pack. You need to enable this in the software, however.
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The IGBT (or Bosch transistor, which technically isn't an IGBT) eliminates the need for a HEI module. There are several types of Blaster 2s; if you have one that can be used with a stock type ignition it should work. The ones that are supposed to only work with a CDI box are probably not ideal. To answer the "what kind of connection?" It doesn't much matter if it's crimped or soldered, just don't use wire nuts.
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That looks like a flyback failure or a 12 volt spike. What sort of injectors are you running?
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You just answered your own question: You have a 3.0, not a 2.2.
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The VDC is from the 12 volt wire that supplies Megasquirt. Specifically, it's run through the R3/R6 circuit on a V3.0 board.
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I'd probably use the PWM control first and see how well it works. You can add resistors later if you find your injectors / wiring are giving you noise problems. Unless you have a V2.2 board, in which case I'd go straight for the resistors.
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You'd need to rig up some sort of vehicle speed sensor input for that, probably using a frequency to voltage converter. It's something that could be done with enough determination, but isn't very well documented.
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And if Q16 is not installed, you must use an external ignition module.
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That should be the wire on the leftmost pin, not the middle.
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What L-6 distributors are out there?
Matt Cramer replied to sorealsosurreal's topic in Ignition and Electrical
If the engine spends most of its time at full throttle, mechanical advance is fine. If it needs part throttle drivability, it would benefit from having vacuum advance too. -
Ok, I see you are getting an RPM signal. There are a couple changes you need to make, however. Set the cranking trigger to Calculated first - setting it to Trigger Rise isn't going to work with a 103 degree trigger angle. (Most installations also need ignition input capture set to Falling Edge.) Change that first, then check if your injector outputs work on a Stim.
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What L-6 distributors are out there?
Matt Cramer replied to sorealsosurreal's topic in Ignition and Electrical
Not unless you wanted your timing locked out (in which case you might be able to get it to work). At the minimum you would want a timing control box to get good drivability. -
That link is a bit weird - I can't find a link to download the file? At any rate, my first question would be if you are seeing RPM when you crank the motor.
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In addition to Innovate's DB and G series gauges, you can program it to work with a 10 bar LED gauge as well.
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I'd definitely worry about 1/16" when gasoline is involved. Use the right fitting; there are adapters for this kind of thing. Either use a good quality compression fitting (not everyone seems to like these, but they've worked for me) or flare the line and use a reducer fitting to connect it to the AN line.
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You may need to raise the MAPdot Threshold further. Alternatively, you can turn this off under boost in the Accel Decel Mode screen as well.
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Go to Basic Settings -> Accel Decel Mode. Set "Turn off decel enrich when" to "above kPa level" and specify the kPa level (usually around 100).
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Try a MAPDot threshold of 75 and see how things go from there.
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What L-6 distributors are out there?
Matt Cramer replied to sorealsosurreal's topic in Ignition and Electrical
Yes. However, there is no advance mechanism in the '82-'83 distributor, so you would need to use it with an ECU capable of controlling the timing. It wouldn't work as a straight drop in with NA electronics. -
Only on an MS1. V3.57s are the same except there's no IGBTOUT to IGN jumper.
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Are you using MAPDot or TPSDot acceleration enrichment? I'm not able to tell from the log. You will need to increase the threshold on whichever one you are using until the problem goes away. I can't tell you how far it needs to be increased from the log.
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While the trace looks steady, it seems there is a bit of noise that is too small to register in the line but enough to trip your AE. Try turning up your TPSDOT or MAPDOT threshold as appropriate.