L-jet, sequential or batch?
01-28-2003, 01:47 AM
#31
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James, snag the Probst book on Bosch Fuel Injection Systems from Amazon.com or somewhere. It's cheap, very good from a theory and basic diagnostic perspective, and you'll be the local FI wizard.
Also, all your Mega-squirt questions are adequately answered in their FAQ. <a href="http://www.bgsoflex.com/megasquirt.html" target="_blank">http://www.bgsoflex.com/megasquirt.html</a>
Also, all your Mega-squirt questions are adequately answered in their FAQ. <a href="http://www.bgsoflex.com/megasquirt.html" target="_blank">http://www.bgsoflex.com/megasquirt.html</a>
01-28-2003, 03:10 AM
#33
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Dang! I thought about building something like this for years, but never got around to it. It will be really interesting when/if they add ignition to it. They don't need the actual ignition in the thing, just a signal coming out to trigger the existing ignition box. When you can tune timing and fuel at the same time is when you have really good control (like the Motronic). I suspect the reason they make aftermarket firmware for the Motronic cars but not for the D jet cars is that there is only so much you can do when you cannot control the timing. In stock form I'm not sure EFI 928 really needs this. Its the 914 guys with the old D Jetronics that REALLY need it.
01-28-2003, 10:55 AM
#34
</font><blockquote><font size="1" face="Verdana,Tahoma,Arial,Helvetica,Geneva">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva"> Jim,
Is that a six series? Where did you splice in the crank trigger, and where did you mount the handy boost control ****?
Tell all... You HP harlot. </font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Arrrg! No, it is a Mercedes 560 SEC. The car has a 5.6L V8....no stinkin' BMW six.
Boost control **** is mounted under the steering wheel. Everything in the kit hooked up to my stock ignition. Kind of a plug and play. Since I added the methanol/water injection, there has been no need to retard the timing and I can run full advance with no detonation. The car is very quick now.
Is that a six series? Where did you splice in the crank trigger, and where did you mount the handy boost control ****?
Tell all... You HP harlot. </font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Arial,Helvetica,Geneva">Arrrg! No, it is a Mercedes 560 SEC. The car has a 5.6L V8....no stinkin' BMW six.
Boost control **** is mounted under the steering wheel. Everything in the kit hooked up to my stock ignition. Kind of a plug and play. Since I added the methanol/water injection, there has been no need to retard the timing and I can run full advance with no detonation. The car is very quick now.
01-28-2003, 11:06 AM
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As far as the coolant temp sensor goes, it doesn't seem to be that big a deal to recal the system to use the Bosch OEM one. We'd need to get a sensor and determine it's characteristics first, then plug those values into the program they provide. We need to determine the resistance values at a given temp like:
double temp[NTEMPS]={210,194,176,158,140,122,104, 86, 68, 50, 32, 14, -4, -22, -40};
double res[NTEMPS]={177,241,332,467,667,973,1459,2238,3520,5670,9420,16180,28681,52700,100 700};
Those values are for the GM sensor.
double temp[NTEMPS]={210,194,176,158,140,122,104, 86, 68, 50, 32, 14, -4, -22, -40};
double res[NTEMPS]={177,241,332,467,667,973,1459,2238,3520,5670,9420,16180,28681,52700,100 700};
Those values are for the GM sensor.
01-28-2003, 11:23 AM
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From the MegaSquirt Features list:
However, we are currently developing a multiple-coil CDI ignition system with ion-sensing technology which will interface directly to the MegaSquirt system - stay tuned...
However, we are currently developing a multiple-coil CDI ignition system with ion-sensing technology which will interface directly to the MegaSquirt system - stay tuned...
01-28-2003, 03:51 PM
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Here's a website wher eyou can order the PCB and a few sensors
<a href="http://www.bgsoflex.com/mspo1.html" target="_blank">http://www.bgsoflex.com/mspo1.html</a>
<a href="http://www.bgsoflex.com/mspo1.html" target="_blank">http://www.bgsoflex.com/mspo1.html</a>
01-28-2003, 04:07 PM
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Also, there is a companion ignition system project called MegaJolt. Their web group address is:
<a href="http://autos.groups.yahoo.com/group/megajolt" target="_blank">http://autos.groups.yahoo.com/group/megajolt</a>
<a href="http://autos.groups.yahoo.com/group/megajolt" target="_blank">http://autos.groups.yahoo.com/group/megajolt</a>
01-28-2003, 04:42 PM
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Also, MegaJoltLight EDID Ignition Sytem located at :
<a href="http://www.bgsoflex.com/mjl/mjl_edis.html" target="_blank">www.bgsoflex.com/mjl/mjl_edis.html</a>
Features:
Fully programmable ignition advance, using off-the-shelf Ford EDIS module and wasted spark ignition coils.
MJL-EDIS can be operated either in fully independent mode or can be assembled as part of the MegaSquirt EFI controller system for complete engine management.
Knock Detection for controlling ignition advance.
Fully-programmable 8x8 RPM/load map ignition advance table with additional control for coolant temperature.
Crank angle position is measured using a 36 minus one tooth crank wheel and VR sensor setup.
Tachometer output - can be used for direct MegaSquirt tach drive, as well as aftermarket tach gauges.
IAC stepper motor control circuit for MegaSquirt ECU installations, provides full idle speed control. Additional idle control using advance is also available.
All parameters are adjustable using the PC Configurator-EDIS software - available for free download here.
<a href="http://www.bgsoflex.com/mjl/mjl_edis.html" target="_blank">www.bgsoflex.com/mjl/mjl_edis.html</a>
Features:
Fully programmable ignition advance, using off-the-shelf Ford EDIS module and wasted spark ignition coils.
MJL-EDIS can be operated either in fully independent mode or can be assembled as part of the MegaSquirt EFI controller system for complete engine management.
Knock Detection for controlling ignition advance.
Fully-programmable 8x8 RPM/load map ignition advance table with additional control for coolant temperature.
Crank angle position is measured using a 36 minus one tooth crank wheel and VR sensor setup.
Tachometer output - can be used for direct MegaSquirt tach drive, as well as aftermarket tach gauges.
IAC stepper motor control circuit for MegaSquirt ECU installations, provides full idle speed control. Additional idle control using advance is also available.
All parameters are adjustable using the PC Configurator-EDIS software - available for free download here.
02-25-2003, 01:32 AM
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FYI, I ordered the PCBs for the megasquirt and the relay board, also the diagnostics board. Should be here in a few weeks. May be megasquirting in as little as 3 months.
Which brings up a question. Does anyone know what resolution the factory fuel maps are? The standard MS maps is 8x8, or 64 points along the RPM scale. There is an option to modify the software to use higher resolution maps. If i knew what factory was, then I would go a few steps beyond that for finer control.
Which brings up a question. Does anyone know what resolution the factory fuel maps are? The standard MS maps is 8x8, or 64 points along the RPM scale. There is an option to modify the software to use higher resolution maps. If i knew what factory was, then I would go a few steps beyond that for finer control.
02-25-2003, 02:54 PM
#41
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"Does anyone know what resolution the factory fuel maps are?"
The factory Bosch system uses a 12x12 map for partial-throttle mode. There's also a higher resolution 16-cell map for WOT. This map is selected by a combination of the WOT throttle-switch and the AFM flapper-door swinging open past a certain point.
The factory Bosch system uses a 12x12 map for partial-throttle mode. There's also a higher resolution 16-cell map for WOT. This map is selected by a combination of the WOT throttle-switch and the AFM flapper-door swinging open past a certain point.
02-25-2003, 10:54 PM
#42
Great to see you over here Danno. Doing some research? 
02-26-2003, 04:09 AM
#43
Race Director
Hi Brendan <img border="0" alt="[bigbye]" title="" src="graemlins/xyxwave.gif" /> . Yup, thinking about picking up a well-used shark and rebuilding it with forced induction! I've got a dorsal fin I'd like to fit as well...
Don't forget we've got the <a href="http://www.andersonmotorworks.com" target="_blank">Anderson Motorworks</a> gathering and dyno-session in late March! See you then!
... some quick notes:
"Knock Detection for controlling ignition advance. "
Don't rely on this for ignition settings. By the time it's picked up and adjusted, it's too late. You want to manually specify each and every ignition value on the map. A skilled tuner can pick up knock on the dyno sessions if you have a Mustang dyno so you can easily test every portion of the map. Knock & detonation also shows up on the dyno-charts as jagged curves. Again something a skilled tuner can interpret. Then set your ignition map about 2-3 degrees below this level for safety. At this point, the knock-detection can come into play as a safety device in the event you run into some bad gas or really hot outside-air temperatures.
"Tachometer output - can be used for direct MegaSquirt tach drive, as well as aftermarket tach gauges. "
Remember that the dash tach. uses a grounding signal to drive it. You'll have to add an switching circuit to invert the signal.
The EFI system that's always been my hero is the GameBoy console that was converted to control a 2-cylinder engine! The ultimate one I'm looking for is the PalmPilot EFI systen done all through software. Then you can just unhook the PalmPilot and take it with you; the ultimate alarm system!
Don't forget we've got the <a href="http://www.andersonmotorworks.com" target="_blank">Anderson Motorworks</a> gathering and dyno-session in late March! See you then!
... some quick notes:
"Knock Detection for controlling ignition advance. "
Don't rely on this for ignition settings. By the time it's picked up and adjusted, it's too late. You want to manually specify each and every ignition value on the map. A skilled tuner can pick up knock on the dyno sessions if you have a Mustang dyno so you can easily test every portion of the map. Knock & detonation also shows up on the dyno-charts as jagged curves. Again something a skilled tuner can interpret. Then set your ignition map about 2-3 degrees below this level for safety. At this point, the knock-detection can come into play as a safety device in the event you run into some bad gas or really hot outside-air temperatures.
"Tachometer output - can be used for direct MegaSquirt tach drive, as well as aftermarket tach gauges. "
Remember that the dash tach. uses a grounding signal to drive it. You'll have to add an switching circuit to invert the signal.
The EFI system that's always been my hero is the GameBoy console that was converted to control a 2-cylinder engine! The ultimate one I'm looking for is the PalmPilot EFI systen done all through software. Then you can just unhook the PalmPilot and take it with you; the ultimate alarm system!
