GL1100 with throttle bodies (Fuel Injection)

[socrace]

Hi irishcarbomb
Thanks for the info! Sounds like you've used mega/micro squirt before.

Was looking at the microsquirt schematics, and noticed they left an unused timer compare pin on the S12 mcu. Am hoping to jumper it to something like the flex-fuel input pin (which I'll never have any use for whatsoever) and may have enough timers to do 4 injectors and 4 ignition drivers. We'll see, for now will be happy to just get 2 spark and 2 injector channels running!

[JBz]

Careful with the microsquirt and your 4 coil setup...you'll need a quadspark driver to make that work..

http://www.diyautotune.com/catalog/quad ... p-481.html

The microsqurit only supports two coil outputs, or four(i guess maybe more) on wasted spark. Also its a pwm only idle control.

That's what Matt said at DIYAUTOTUNE. Then I asked him if I can getaway with the QUADSPARK and Im pretty sure he said I could if I use LS1 coils or COPs .Wasted Spark which is probably the same thing Irishcarbomb said. The LTD has a 8 tooth crank and a single crank pickup. I heard the 86 SEI has 2 crank pickups. I have a single tooth cam pickup with 2 vrs . Just learnin..........JB

[socrace]

JB, Well, have to admit you're right, checked my Honda manual for the ltd and it does use 2 cam sensors and 1 crank sensor!
Never doubted your ability to see whats in front of you, just thought maybe a PO had modified it!

[irishcarbomb]

Hi irishcarbomb
Thanks for the info! Sounds like you've used mega/micro squirt before.

Was looking at the microsquirt schematics, and noticed they left an unused timer compare pin on the S12 mcu. Am hoping to jumper it to something like the flex-fuel input pin (which I'll never have any use for whatsoever) and may have enough timers to do 4 injectors and 4 ignition drivers. We'll see, for now will be happy to just get 2 spark and 2 injector channels running!

Never worked hands on with either, but have been reading and studying it for a long time.

[Toehead]

Latecomer to this thread, but great work. I've had the pleasure of doing a megasquirt conversion (carb to EFI) on my camaro. You're dangerously close to inspiring me to repeat it on the bike!

[sunnbobb]

Good stuff guys. The ngw lab.

[JBz]

Hi Bob. Just curious on Your IAC and what you used and how you plumbed it . . I was thinking of using a gm type right into the top of the air cleaner or the bottom of the intake manifold but probably should be plumbed below the throttle plates using those 4 large nipples on the bottom side of the intake runners?????????????? Thanks JB

maybe something like this????????
http://www.ebay.com/itm/ACDELCO-OE-SERV ... c8&vxp=mtr

[socrace]

JB, am using a Ford idle valve. It's the cylinder looking thing next to the throttle linkage in this picture:

IMGA0284x.JPG

There's a small "L" shaped plate that mounts it and holds the 2 hose barbs that are JB-weled to it. Look close and you'll see the right hose goes to the plenum (that's the air intake) and the left hose goes to 4-way barbs with clear tubing that feeds the stock idle air barbs on the 4 throttle bodies. This picture also shows the MAP sensor plumbing (black tubing) that taps into the 4 intake manifolds.

The Ford idle valve is a pwm (pulse width modulated) type valve that can be used with whatever number of steps your ecu can handle (mine currently uses 3333). Looks like the microsquirt uses 255, which is probably enough given that the GM stepper gets by with 255 steps also. The Ford unit is easier to mount than the GM stepper and only needs 2 wires. I used an older version, the newer ones are much smaller, but there's room for it and already had one!

[JBz]

I believe I got it. You used the 2 round ports and then jb d fittings and made a bracket for it. im not sure on the microsquirt handling it. I might just go on or off like on the link below though a stepper would be nicer. Thanks for the picture. jb



http://www.ebay.com/itm/121172275752?ss ... 1438.l2649

[JBz]

just curious Sorace if you know of any generic< lower priced> wideband o2 sensor that aint real tall. Seems like most stick up so darn high. Just replaced the one in my wifes Taurus and its 2 250 inches from the top of the threads . JB

[socrace]

NGK makes a sensor kit with a sensor that may be shorter than the bosch, but probably not by much!

[Toehead]

The problem is that there are a lot of differerent components in a wideband. You have the regular lambda sensor, as well as an active ion transport pump. It takes some room.


These guys sell some of the cheaper interface electronics:http://www.diyautotune.com/catalog/wide ... 23_45.html

[irishcarbomb]

I got mine (two actually)from 14point7.com. No results yet but its an all in one wideband sensor/controller for $105

Shipping took a bit longer than i hoped but for two it saved me a bunch

[socrace]

Was able to get the microsquirt running on the bike this weekend, although fuel only for now. Was raining at the time and now it's about 20 degF, so no high speed runs yet, although starts, idles, and revs up ok in the garage!
Decided to stay with B&G code for now since it seems to get the job done. Although, did download and install the latest version. The unit came from DiyAutotune with version 3.77 and is now using 3.83. Here is a screen shot of the TunerStudio dash with engine idling, with the fuel table I'm using opened over it. Oxygen sensor is narrow band and the air temp shown is being simulated with a fixed resistor. Pulse width is a little low, because I'm not using the pressure regulator referenced to manifold vacuum, and because the stock Honda injectors are about twice the size they really need to be! Runs as well as the Weber ECU did, though, at least so far.

usquirtGW1.JPG

The fuel table is something I tried to translate from the Weber table developed over the past couple of years. The microsquirt basically multiplies the fuel PW by the MAP lookup factor for that cell, so fairly easy to do in Excel. At least, we'll find out for sure when I take it out for an extended ride, hopefully soon!

[irishcarbomb]

looks good! i just got mine started for the first time today (will be posting a video in my thread) definitely needs work on the fuel tuning but it runs!