Triumphrat

fat frank

Can this be done. I'm getting the Tuneboy this week. Already have a lot of dyno time getting the AF right on my modified Bonnie. Lots more to come with the ignition timing.
Is there a go to person when you hit snags on these units?
Looking forward to the install.
later

Martin_R

Yes, it should be possible.

TuneBoy software is free to download, so you can have a go and see if it works on Bonnie tunes:
http://www.tuneboy.com.au/Support/Download.html

Then download the tune your bike has from here:
http://www.tuneboy.com.au/TuneDownlo...esTriumph.html

And with the tune open in TuneEdit, try to overlay your PC3 custom map via:
File->Apply Trim Map

After import you should see your PC3 trims on the "Fuel % Trim" tab. If yes, then all went as planned and you have a Tuneboy tune that matches you previous setup and you can remove PC3 (or zero the map in the PC3 if you wish to keep it on-board for easier dyno tuning).

DEcosse

As Martin says
Once you recognize that the PC3 IS a trim map (that's how they work) then it becomes more intuitive.

1) Open your Triumph base map in Tuneboy - save as a new 'custom' tune number
2) From File menu, select "apply trim map"

Open the saved PC3 file that you wish to apply - note that these can be either .djm or .map files (.djm PC3 maps have more resolution)

Look in the Fuel trim Tab to see that trims have been applied

Save File

3) You can leave as a Trim Map or can commit to the main fuel table

Tools Menu - Commit trims to main table (trim table goes back to all zeros, trims incorporated in main fuel map)

Save File as (same number _suffix - something of your choosing)

4) Download to ECM*

I would suggest that you save the tune in two formats - one with the trims and one with the trims committed.
Of course once you commit the trims you can't 'un-commit' them

It's good idea generally when tuning to make your changes in the trim map (whether importing a PC3 map or otherwise) and then commit the trims when you are satisfied.

* Also as Martin pointed out, very important that once you commit the trims to the ECM, you MUST zero out the PC3 (or disconnect it) - otherwise you will be overlaying your trims on top of the already trimmed 'base' map.

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T'Rat.net BOTM November 2009

fat frank

I am going to disconnect and remove the PCIII so I can reconnect my O2 sensors. The way I understand it, I remove the PCIII, hook up my O2 sensors,install the Tuneboy with base map, edit the AF with the map from my PCIII, and good to go. I'll then, add some advance to the ignition timing and check her again on the dyno.
Sounds like I need to have my laptop with the tune edit with me to make adjustments while on the dyno. My dyno shop is set up with dynojet software. He hasn't heard of Tuneboy.
This is all new to me. My Tuneboy should be here today or tomorrow. Hopefully, it will be easier to understand when I have it here to play with.
I'm basically, just thinking out loud about what I need to do with it, once it's installed.
Thanks in advance
Frank

DEcosse

I think what Martin was suggesting Frank, is to leave your PC3 installed until you complete your tuning.
What might be the most productive way to go is to leave your fuel map (in the ECM via Tuneboy) alone until after you complete the dyno runs for your timing advance adjustments - that way your dynojet guys can still use the PC3, with which they are intimate, to dial it in.
THEN you can commit the final trims to the ECM via Tuneboy
(You can go either way - commit initial maps first & start with a zero map in PC3 for your re-tune, or leave it until the end and apply all in one go).
If you take your laptop with you however, you can get the final PC3 downloaded, apply it your saved revised timing Tuneboy map, upload it to the ECM, zero the PC3 map and do some final pulls to validate that all is per the previous configuration.
Then you can take the PC3 off when you get home?

Edit - I assume that you had to install the fixed O2 sensor simulators for the PC3 - you can leave those with the Tuneboy also if you prefer.
But I don't think it will matter if you hook those up later anyway - if you do it's going to actively apply the trims that it determines anyway.

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T'Rat.net BOTM November 2009

fat frank

OK. Got it installed on my Bonnie. There is a link that says apply PCIII trims. I asssume this is where I can install these in the ecu then zere out the PCIII. If this works, it would be easier to adjust the Ign timing and play with the AF till I get it right, then apply it all to the ecu and clear the PCIII. I'm almost afraid to try anything. Guess I have to get my feet wet sometime.lol Gonna take it to the dyno again this weekend.
Can you just type in all the AF numbers (like 13.5 12.8, etc) and app;y them? Will the ecu make the nesessary adjustments to give me those readings? Are is there more to it.
Thanks in advance
Frank

Power-Tripp

PC3 trims do not always correctly convert over to TuneEdit trims. Despite what DynoJet/Power Commander would have you believe, the PC3/PC5 trims are not a fixed percentage.

IMHO, it is easier and more accurate to use the Dynojet Tuning Link software to adjust the main trims in TuneEdit directly and see the effect on the dyno, than to convert PC3 trims and hope everything is good after you are off the dyno.

Plus while tuning with TuneEdit, you can adjust the AFR and MAP based tables (L tables), and the MAP/TPS change-over points for best response and smoothness.

Also, you can adjust ignition trim with TuneEdit and not a PC3.

If you have a good grasp on tuning with TuneEdit, you can likely talk the dyno operator into letting you tune the other details after he has run Tuning Link and corrected the main fuel tables.

Also, You are best served by starting with a good TuneEdit map, and working from there, rather than starting with one of the stock maps.

YMMV.

DEcosse

Excellent advice Power-Tripp

I have extracted the how-to and posted as a sticky - I think many overlook this capability.

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T'Rat.net BOTM November 2009

fat frank

I don't know of any tuneedit mapswhich could come close to what I need.
904 11 1/2 to 1 HCP, 813 cams, Throttlebodies opened up to 38.7 cm, ABR and Dominator pipes. I only see tunes for Bonnies with different pipes. Is there another place to look?
I was thinking about loading the 2 into 2 tune and starting over from there.
Thanks in advance

Power-Tripp

TuneEdit tuning - the down and dirty version:

Start with the 2-2 tune, but richen up around 4%, and drop ignition advance 3 degrees as a starting point. Try altering the F_L change over to "3" at all points beyond 2000 rpm.

Then on the dyno, keep giving it fuel until you see max brake torque (MBT) drop at a specific rpm. Then back up 2-3% and test again. Do this for the entire powerband at each throttle position.

This is much easier on an eddy-current dyno, than an inertia design, but it still works best. Realize that the AFR curve on a Dynojet will trail actual engine speed by 1000-1500 rpm (depending on how quickly the engine accelerates).

Then try adding more ignition advance. Notice where and how much output increases or drops. Make changes and work to MBT. Pay specific attention to the way the torque curve drops off after peak(or doesn't), and power climbs (or doesn't).

If you find places that need more than 3 degrees advance for best output, go back to these and try adding a bit of fuel as well.

Test transient response at various loads and engine speeds. Adjust the L tables accordingly.

ANd finally, go back in to the regoins where you cruise and lean these back down. This will help give you good mileage. I generally go until I see lean misfire and then richen up 3-4%. You will also need to add fuel in the cooresponding region of the L tables for acceleration enrichment. YMMV.

I hope this helps.