Fueling map issues? - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 13 (permalink) Old 03-26-2015, 11:39 PM Thread Starter
SuperStock
Main Motorcycle: 1999 Speed Triple
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Fueling map issues?

'99 Speed triple.

I had the TOR high mount and the TOR high mount tune (9898). I wanted the stock exhaust since it's quieter and stock. I like stock. So I purchased it from a member here. I had a chance to install it today and I also installed the stock tune (9897). I started the bike and let it idle for about a minute. Started great, revved great in neutral, so went for a spin around the block. Right off the bat it was horrible below 3k rpms. It was surging pretty bad and felt like it had no power. After 3k, it ran beautifully.

I went back to the garage and installed the 9898 map. Bike started great, revved great in neutral, so I went for a spin around the block. It ran great, no issues, no hesitation, no surging, no loss of power.

Ok, I decided to try the low mount TOR tune (9899). The bike started GREAT. Quicker than it ever has before. Revved ok in neutral, a little hiccupy but not bad. So I hop on and go for a ride around the block. The fueling under 3k wasn't as good as the high mount but better than the stock map.

So that's where I'm at right now. Why would a TOR high mount map work the best on a stock exhaust? The bike was never very warm, so would the 9897 map or 9899 map be better once the bike is warmed up? I'm seriously at a loss. It blows my mind the 9898 map is running the best while riding. Do I have another issue I should look into?
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post #2 of 13 (permalink) Old 03-27-2015, 04:43 AM
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I assume that you have performed a TPS-reset .

Now you must check and adjusting, the CO value.

Following the description of the operation for which a CO tester is required (set the value to 3 - 3.5%):

Idle Fuel Trim (CO adjust)
This can only be set when the engine temperature is between 80-95 degrees C.

Ignition on, start TuneECU
start the engine and let it warm up.
open in TuneECU the test panel.

On the left side, below, you find the switch "Idle Fuel Trim (CO)" here can you change the value.
But you also need a co-tester, TuneECU even shows only a notional value and not the percentage of CO.


Regards,

Tom

Last edited by Tom_Hamburg; 03-27-2015 at 04:57 AM. Reason: correction
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post #3 of 13 (permalink) Old 03-27-2015, 08:03 PM Thread Starter
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I reset the TPS a week ago, but I did not reset it after each map reflash.

For the CO, I do not have a tester and I do not have a way to get one.
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post #4 of 13 (permalink) Old 03-28-2015, 07:04 AM
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After flashing a new map, a TPS reset must always be performed.

A CO-tester exist in every vehicle workshop and in every motorcycle repair shop .......

Regards,

Tom
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post #5 of 13 (permalink) Old 03-28-2015, 03:55 PM
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I've had a Gunson CO meter for years, good tool:

http://www.gunson.co.uk/item.aspx?item=1835
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post #6 of 13 (permalink) Old 04-01-2015, 10:25 AM
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Mango,

A couple of points for you.... did you reset the adapters after the flashing the ECU? This needs to be done. Can be done with TunECU or by the "12 minute" tune method. That is:

"Start the bike, and with never applying any throttle, let it idle until the fan kicks on, and then let it go for another 12 mins to complete the 12 minute tune which is when the bike will re adapt to the new maps for idle settings."

Additionally, you can get a "Gas Testor" at Amazon. Below is the link. I bought one a few years ago and paid $125. Looks like they went up since then.

http://www.amazon.com/s/?ie=UTF8&key...l_5yqshq25me_p

Hope this helps!

In God we Trust..... All others must have cash!
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post #7 of 13 (permalink) Old 04-01-2015, 10:57 AM
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ooops! May have misguided you. I was an avid user of "tuneboy" and have only recently started using TuneECU. Tuneboy allowed you to reset adapters with just a click of the mouse.

I do not think that is the case with TuneECU. That being said, just try the 12 minute tune procedure I described in my previous post. Pretty easy to do. Just let the bike idle for 12 minutes after the fan turns on. (do not touch throttle at any time)

In God we Trust..... All others must have cash!
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post #8 of 13 (permalink) Old 04-01-2015, 08:41 PM
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Capt Bob - there are no adaptions to reset on a bike with no O2 sensor and the 12 minute tune only applies to those models with Keihin ECU. Aside from that it is not a Keihin, fact that there is no O2 sensor means there is nothing from which the ECU can adapt anyway. It relies completely on its active input devices and map tables to generate fueling condition and has no way to modify (adapt) its operating condition without any feedback as to how its performing.
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post #9 of 13 (permalink) Old 04-01-2015, 09:20 PM
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You are correct DEcosse. after rethinking...., the 12 minute tune does nothing for a T595. I have owned too many Triumphs and seem to be getting them mixed up. Thanks again for keeping me honest!

In God we Trust..... All others must have cash!
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post #10 of 13 (permalink) Old 04-01-2015, 09:20 PM Thread Starter
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Just an update, I took the bike for a longer ride (10 miles or so). It was terrible in the beginning. It stalled out on me trying to turn onto a 45 mph road (NOT FUN.) I started it back up, gave her half throttle and made it moving successfully. Once I was over 3k rpms I had no problems. Then at the end of the road, I came to a red light. When the light turned green and I took off, to my pleasant surprise, it seemed to do just fine. It hasn't been acting up since. It seemed a tad lean pulling into the driveway at the very end of the ride but miles better than it was when I started. I'll go on a longer ride this weekend. I'm convinced there are adaptives built in the ECU. I spoke with the local Triumph tech and he said there were. The 12 minute tune might not work, but riding the bike definitely made a difference.
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