My first post. Hopefully someone can steer me straight.

Purchased a My16M kit a year ago, just now getting the bike together.

Bike is a 1999 Cagiva Gran Canyon. has the 900ss motor with 750 Monster heads. Uni filters and an opened up exhaust.

Bike starts and runs well with the FBF chip.

With the My16M installed, it will fire once but dies immediately. Backfires through the intakes with the throttle open at all. All seems well with the ECU. I'm able to upload and download to/from the unit. All parameters seem normal with the exception of the voltage reading 28.5v.

I've set the TDC flag to 1 and played around with the injector duration at 0,1. No joy.

Keeping in mind that I assembled it from a kit, is the odd voltage reading indicative of a problem somewhere?

I'm reasonably sharp with electronics, less so with computers. Can anyone offer some troubleshooting tips or suggestions?

Thanks,
Pete

The incorrect voltage reading is most probably R22/R24 being the wrong. R22 is 47K and R24 is 10K. You may also have the diode next to R24 the wrong way around.

This error will have an effect on the injector values if your map has the InjVOn line.

The bottom of this page has a bit about the 2 stage starting process the ECU uses http://www.cajinnovations.com/MyECU/FirstSteps.htm

When you get the voltage correct I recommend going back to the original map and starting again. Did your voltages at chip pins 3 and 4 match ( 2.5V and 2.7V )
Do your other sensor inputs seem sensible?

Good catch with the resistors being swapped. I guess I'm getting older.

I'll have to find a local source for a 47k, one of the few that I don't have on hand.

I'll admit to being too excited to get started to check the voltages at the connector, my bust.

All of the other parameters looked normal. And yes, I'll start with the standard, unmodified map once I get things back together.

Thanks again
Pete

I think my code ( haven't looked at it in a while and its not in front of me now ) has over voltage protection for the injectors so that's probably why it didn't get fuel.

Should start up fine next go.

What map do you start with, Pete?

I was using the base map that I think I must have received when I purchased the kit. I also have one that I've saved as "Sport2" it must have come from Clif also.

But Clif called it. I had the resistors swapped. I've ordered some and will post when I try again.

Pete

OK, best of luck w the start!

Here`s a GC standard map if you haven`t seen it before:
http://www.bikeboy.org/fuelinjection.html

Thanks Greenmonster, that's got some interesting info that should prove helpful.

Pete

FOLLOW UP:

Got the resistors, put them in properly this time.

Even though it's rather cold here, for Florida, my curiosity got the best of me so I installed the ECU, hooked it up, turned on the ignition.

All looked well so I decided to push my luck. With the base map in I hit the starter...and she fired right up!!

Idled a bit lumpy as expected, I'll get into straightening that out this weekend when the temps get back into the 70's.

It may be a few weeks before I get the bike roadworthy but I'll post my experiences then.

Cliff, thanks for an excellent product and fantastic support! You can put another in the win column.

Pete

hi send me your fbf eprom data so i can let you see valeu
from inj ign etc , i have a gc and try to help :D
i have original data ,contact me so i can try to help

Thanks for the offer Cwx, but the bike is running very well and I'm dialing it in.

It's now idling smoother than it ever has. My neighbor is a lifetime Ducati guy and he said he's never heard a Duc idle that smooth.

I'm just finishing the wiring harness for the Innovate gear. I've got two LC-1's and a DL32. I'll be trying to get Raz's plugin incorporated.

Question for Cliff or anyone who knows. When using two O2 sensors in closed loop mode, does the second sensor adjust the offset table for cylinder 2? My guess is that it would have to if it were to have any effect.

Cool! Note that I haven't used the plugin for a while, and it's untested with the bluetooth-aware firmware. I did change the baudrate but I may have to incorporate sending a CR if data stops coming. Let me know if it doesn't work (or if you want to change something) and I'll have a look at it. Or, if you are into programming and fix stuff yourself, I'll be interested in the code changes.

AFAIK the second O2 sensor will adjust the offset table in AutoTune.

It's turning out to be a great end to 2010.

I went back to square one, open loop with a standard map. Logged the engine parameters under a wide range of riding conditions, made changes where they seemed to be called for, repeat, and went closed loop to smooth out the rough spots.

The bike is running very well, O2 levels are right where I'd targeted them to be.

Now that I'm comfortable with the software and hardware, I've got to balance the throttle bodies. I was surprised to see the rear cylinder running quite a bit leaner than the front so I think it's worth checking out the intake system.

If anyone knows a good source for learning about the interaction of ignition advance I'd like to hear it. Or I'd like to hear your experience if you've played around with it.

I understand the basics, more advance (to a point) can increase power and the likelyhood of detonation.

pete