rich888

I've been looking around at TB balancing/synching. There appears to be a few schools of thought about setting idle balance. I was advised by Meinolf, after loading his bin file, that both air bleeds should be closed and that I should idle synch using both throttle stops. This is obviously counter to most of the posts that say only use one throttle stop to set idle speed, or some that say to use the air bleed screws. I am thinking that, after setting TPS, closing both air bleeds, I leave the throttle link bar disconnected and set the idle balance with just the throttle stops. Then reconnect the throttle link bar making sure it's adjusted to keep the idle in balance. Now set 3k rpm balance with the white knob. I can't quite see how that won't change the idle balance? Am I missing something?

Yes, I have only set the left throttle stop as described in the tune up posts. Is there a detailed proceedure for synching both throttle stops I can read? I have a dual vaccuum gauge and gear to read TPS etc.

Interesting! There's not much software in these ECU's !!!! Does your bin file have any software changes or is it purely data table changes?

Ha! Yes the seat of your pants tacho works pretty well. My speedo is also of the "I'm waving at you" type. Vague-lia gauges. goto love them. A gps speedo is cheap to add, which gps modules coming in at under £5 these days... Wouldn't mind trying to see if I could compute the fuel consumption too. I have been learning some more about the KL interface. It's not a simple tx/rx. The data for send and receive all goes over the K wire. There's a chip that handles all that, or you can use 4 op-amps like my cheapo USB KKL adaptor does. I have still not found a definative list of commands available from the 15M ECU, but what GuzziDiag offers ties up closely to the Fiat specification for the P8 ecu.

Thanks Meinolf, tried #90 today. Ran well. I did need to wind the idle screw in quite a bit, to get it to idle. I am still getting an occasional hicup/missfire when coasting at low, but not closed, throttle.

Thanks for the explanation Meinolf. I am looking forward to trying your map on this lovely Easter Sunday here in sunny Dorset! Is the bin file is a complete image of the ECU software, maps, tables etc or is it just the ECU map data?

Yes. Going for an android phone solution is another way to do it. Especially if you already have your phone mounted on the bike for sat nav etc. I am thinking of a device small enough to replace the dodgy tacho with...

After a bit of googling, I found the protocol for Marelli P8 ECU's is documented by Fiat. These are used in many cars as well as bikes. Some guys on Ford Cosworth forums have made add on gauges using the Fiat documents. A guy on a Ducati forum is using a modified ECU with his own software running on another processor, combined with AFR sensors to play with fueling/tuning of his bike on the move! So there is a modest set of info that you can request from the ECU and this would be displayed on a small OLED screen. Adding a GPS (which are cheap these days) will give speed, or could use a mag pickup on a wheel or shaft. From that and RPM, I should also be able to show gear position. Will post a few pics when I get a prototype knocked up! If anyone is interested in the ECU document: http://download.fiatforum.bg/Diagnostic/Eobd/fiat_marelli.pdf Not found one specifically for the Guzzi ECU, but I believe the command and responses are similar.

Duck soup? Ha! I like that. Not heard that phrase on this side of the pond. We might say "Lemon Squeezy" or "A piece of pi$$"

Well my relays are Omron's and the terminals are all spotless...

I have a big lathe and mill, so hopefully I can improvise some tooling to ease the bezel open and then push it back after. I saw someone use a bearing in the toolpost to roll the bezel back into place... Are new uncrimped bezels available anywhere?

Might have to try this too! Mine reads half the correct rpms. Shame there's not a way to pop the bezel off, but I guess it's crimped on, so cutting the can in half is a good trick!

Just to follow on, 34hz is 2040 pulses per min, so for a 2 cyclinder motor, 1020rpm. Pretty close. So given the pulse train from the ecu into the gauge is right, has anyone opened up a Veglia tacho? I would imagine a dry capacitor would cause it to read low...

Hi Antmanbee, Just to confirm, BOTH air screws closed? I have got them both open one turn. TP is set to 157mV and CO to zero. I have MIVV cans on my bike. Not 100% what air filter is in there. (only just got the bike and didn't want to release the tank unless I really have to!)

No worries, actually I think I read some old posts by yourself about doing something similar? One of my objectives is a working tacho! LOL!

One more question, excuse my ignorance but does the ability to change factory maps make devices like PowerCommander etc completely redundant?

I will give this a try! Thanks. Do I need to reset anything after loading it? CO or TPS etc?

Thanks, wasn't sure how different they would be across models, but looks like this is identical to mine. Difference Tool says 0 bytes different.

Anyone got a stock V11Sport, 2001, bin file? Just want to see if my ecu has been tweaked....

No idea what protocol it uses, just that it uses the KKL type OBD adaptors... Which appear to be for VAG cars.

Just had a look at mine. At fast idle ecu says 1100rpm, dial says 500rpm and signal going into gauge (yellow and black wire) is 34hz. No idea what the correct frequency should be? I am assuming it goes up with rpm as it doesn't look like a pwm signal.

Hi 68C, Yes I have already made good use of GuzziDiag! So imagine that but in a small unit that fits just below your clocks which you can display say any 4 or 6 PID's from the ECU. Instead of using a laptop. Don't think he's done an Android version for your phone but that would be handy too! Could be bluetoothed to the OBD and run off a built in battery so it's cable free.

Just wondering if there is a Scan Gauge type device for bikes that can show some of the OBD data while on the move? If not, would anyone interested in one? I might try making one... Combined with a gps module to get accurate speed, it might be quite handy!

Mine does somethnig similar, but I've only check it at idle speeds while comparing with GuzziDiag...

I can probably 3d print the female housing if none is easily available. Thanks for the pics.