Triumphrat

jimmy4871

Great Idea

I have an 08 America with TOR's and a gutted airbox and snorkel removed and K & N filter any suggestions for setting up A/F ratio's etc would be greatly appreciated.

Thanks in advance
Jimmy

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When injustice becomes law. Resistance becomes duty.

fat frank

I currently have the PCMIII on my 09 Bonnie. I've removed the AB, AI, and O2 sensors from the headers. 904 bore with 11 1/2 to 1 HC pistons and the 813 cams installed. Fixing to do the Headwork with bigger valves, port and polished and have the throttle bodies flowed and possibly bored out.
The PCM worked fine for the AF, but it's limited to just that. I want to be able to play with the timing. The PCM is a add on with a y to intercept and modify the ecu input. What is involved with the TB.
I understand it's a code to modify the ecu with. Can someone tell me how the TB works and is it tunable on a dyno?
What are you buying when you buy a Tuneboy?
Thanks in advance

fat frank

If this is a carbed bike? I believe you have to work with your jets on the carbs. There should be some carb guys who have been there and can tell you a good starting point. Only wasy to check is to dyno her with a sniffer. Someone correct me if I'm wrong here.
later

Power-Tripp

Jimmy - What do you mean by "setting up the air fuel ratios"?

Frank - TuneEdit/TuneBoy are software packages that allow direct mapping in the ECU for fuel in each cylinder and ignition advance as well as rev limits, idle speeds, speedo correction, and MUCH more. I use it to tune different Triumph and other model bikes on the dyno regularly.

Martin_R

It is a program that enables you to modify one of the TuneBoy supplied base tunes and upload this into the ECU of your bike.

Fuel (or air in Keihin) tables, ignition, A/F targets, idle, speedo correction etc. are editable.


Tuneable yes, but more manual work than PC3. So if your local tuning shop has no actual tuning knowledge, but are rather just running the Dynojet autotune, then Tuneboy might be a bit difficult for them.

You are buying the connection cable + license code that enables TuneBoy to connect to 1 individual bike.

The program and basetune files are free, so you can have a look beforehand to see if it is useful to you:
http://www.tuneboy.com.au/Support/Download.html
http://www.tuneboy.com.au/TuneDownlo...esTriumph.html

jimmy4871

Tuneboy only works for EFI. So I guess I've got EFI not carby model.

Power-Tripp - From what I've read the A/F ratio's are set lean for emmissions control etc. Tuneboy allows you to change these settings. What I'm looking for is an "ideal" setup for best performance.

__________________
When injustice becomes law. Resistance becomes duty.

jimmy4871

Power-Tripp

I'm thinking of taking my bike to the shop and putting it on the dyno, but when I asked the guy he sounded a bit vague on the whole TB software, he was under the impression it was a module like PC. How do you go about tuning when you put it on the dyno?

__________________
When injustice becomes law. Resistance becomes duty.

Power-Tripp

Jimmy,
TuneEdit allws you to adjust fueling in several ways. There is also an AFR table that is used by the ECU with the narrow band Lambda sensor to adjust the mixture at low throttle openings.

Tuning to an AFR or Lambda reading gets you in the ball park. It doesn't always get you to your seat. You need to tune to max brake torque (MBT) at all loads and engine speeds for best results.

Using TuneEdit is no different than tuning most aftermarket engine management systems, but a bit more involved than tuning a Power Commander and the like. You can adjust individual cylinder fueling based on MAP and TPS sensor input - and where the ECU changes from one to the other. You can alter ignition advance as well. You can even use Dynojet Tuning Link software to help dial in the fueling.

It is far from difficult to use, but some shops shy away from using it due to lack of experience.

The software is a free download at www.tuneboy.com.au

I would suggest downloading it and a few tunes for your bike (also on the same site) and taking a look at the software and its abilities.

DEcosse

You have it hooked up to dyno as normal and with an exhaust probe to measure the A/F

Before you make adjustments, you start with a run and get your baseline condition.
Then you need to make changes at individual (or groups) of cells in the fuel map to fill holes or make it richer etc depending on how the baseline looks. Note that you also have a timing map as well as a fuel map, so have that felxibility also.

You cannot make changes on the fly - you must make changes to the map, then upload it to the bike and do another run.

Clearly you will need your laptop with Tuneboy program and your base map available; you need to be able to edit and then re-load as mentioned.

A map looks like this



Then you highlight individual cells or groups of cells and page up/down to increase or decrease the values to add or subtract fuel from the current level.

So the operator needs to be able to read what is needed from the dyno plot and A/F curve and make the necessary changes in the map.

Note that as opposed to making changes in the actual fuel map, you can use the trim map - this may be easier for the operator to follow as you are only adding the change value, rather than a new absolute value.
In other words it will apply the value of change to the base map.
This is somewhat analagous to using a PC3 in that respect.
Note that this starts out as all zero - new values can be plus or minus as required.

The trims make it a little easier to work with as you do iterative runs, to add or subtract fuel without changing the base level.
At the conclusion, when you are satisfied with the results, you can commit the trims to the main map, so that now has teh new absolute values (the trim map will be reset to zero)



There are similar maps for ignition



There is also an ignition trim map as well as the absolute value map.

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T'Rat.net BOTM November 2009