Triumphrat

TassieDevil · 08-20-2004

Being another newbie to this forum. It may have already been discussed. Has anybody played around with swapping the tunes around between the models. e.g. using a Tiger tune in my 03' Sprint RS. I understand Tigers have a lower compression ratio to RS/ST.

My reason for this question is, that I live in a very hilly place and with lots of corners (lucky me ) and almost zero straights - So, I very rarely get the chance to use the very upper part of the rev range.

Grunt out of corners wins every time down here. Any suggestions?

DMc · 08-23-2004

I just put the 10078 tune in my ST. I believe it is the tune set for the race can. I do not have the race can on. Smoother ride but not as good fuel milage. Down to about 40 MPG. I was getting about 44 before.

thfwsf · 08-23-2004

I'd like to more about the tunes for the sprint. Especially if it would be in my interest to get a tune boy.

I just installed a Trumpet CF can on my Sprint ST and promptly watched my mileage drop from about 49 to 50 mpg to 38 to 39 mpg. Quite a drop and I didn't change my driving habits. This is over 4 tanks of gas.

I looked at my paperwork from the dealer and it only had on it Tune 18. I'm not sure which tune that is, but if anyone knows, please let me know.

I called the shop where I had the tune loaded and got some advice from the mechanic. He agreed that the drop in mileage was a little steep, but that they didn't have the proper equipment (i.e sniffer and a dyno) to properly diagnose my ST. He recommended a few shops to sniff the exhaust for C02 and hydroflouralcarbons (spelling). He gave me a few shops that could help me with the diagnoses. He then stated that they could tweak the tune based on my findings. For example, if the hydro's where high, they could lean it out. or if the CO3 was to low or high, the could adjust it to the 3 to 4 range.

However, besides what I've read. I know little if anything about this tune stuff. Does anyone have any suggested sites to go to? I've been to the tune boy site, but I want more meat.

Tom
'01 Sprint ST (thirsty red one)

P.S. WoooHOOO I just hit the 10k mile mark on my ST!!

TassieDevil · 08-23-2004

A bit more info about my bike. It is a 03' RS with Triumph's louder Stainless steel can and matching tune. My main problem is, my bike is grumpy & can ping quite badly up to 3,500rpm even on light throttle.

My fuel economy has not changed from standard to louder pipe. Mine has always got amazing fuel economy. With a low of 56.5 mpg around town and high of 67 mpg on the open road at a constant 120kph (75mph). I had heard that the Tiger tune made the 955 more flexible in the low to midrange- an thought it maybe a solution to my below 3,500 problem. I had a look at the Tuneboy site, an wonder if you need to be a rocket scientist to remap/ solve your problems .

An me being Apple user- does Tune boy work?

preachp · 08-24-2004

Hi Tas,
First pinging is a synptom of predetanation. In other wors your gas charge is igniting before it is supposed to. This indicates a lean condition. You can try a higher octane gas or change the tune. Secondly if you want to preserve your mileage try the higher octane fuel first.
Secondly I don't think TuneBoy works with an Apple computer.

Preachp

TassieDevil · 08-24-2004

G'day Preachp,
I have already gone down the road of higher octane (95 Ron) fuel to a worser problem of plug fowling , refusing to start when cold, won't idle when warm, slightly backfiring when closing the throttle .Going back to the unusual step of 91 Ron and a new of plugs have cured the above mentioned problems. Except for being a bit grumpy down low and pinging.

But, not sure of the long term consequences of using the lower octane. I also know that Sprint's are very fussy on the quality of fuel . So, after thinking about the problem- if Tune boy is out. Is there another Triumph tune to use? That is where the Tiger thought came from.
Daniel
Hobart

SpiderTex · 08-24-2004

T.D. that is interesting, my Sprint ST is only allowed to have 95 RON and upwards!!

TassieDevil · 08-24-2004

It was my Trumpy dealer suggestion to try the lower grade fuel to solve my problems.
My Trump is not the only one in Hobart having problems in plug fowling & cold start problems. ToAust. are at loss and are talking to Hinkley.

To me - it's the mapping that can't cope with crapy fuel

[ This message was edited by: TassieDevil on 2004-08-24 02:48 ]

SpiderTex · 08-24-2004

The only gripe -if I can call it that- I have is that the ECM automatically adjusts the tune in function of engine parameters. It is standard a lean mixture, which is fine with me.
My ST backfires now and then, especially in the morning after I commute to work... in the afternoon or in week-end's almost no problems with it (no highway slabbing!!)

Also in the morning when going to work the engine parameters are set for "colder" and more "humid" environment and adjusts the ECM accordingly, this always results in the evening going back home, when it is warmer, more dry, with an ST which seems to have a cold: the first 200m it is clogged-up (doesn't like to climb in the rev's, heavy breathing) but then it all clears up again and of she goes.

Weird thing.. doesn't like work just like me! :razz:

Sorry for asking the obvious but: You don't kill the engine with the kill switch? right? And you don't touch the throttle when starting?

Success with finding a solution.

TassieDevil · 08-24-2004

Good point Spider, about touching the kill switch when starting. When my bike would not start - I went through all the starter lock outs e.g. Clutch - thinking one of them might be broken.

The backfiring in the morning on your bike is most likely from where the muffler joins the header. If there is small bit soot around join - there is an air leak. When the exhaust heats up , expansion takes over and seals the leak and the back fire goes away.

I fixed mine with high temp sealant to block the gap, an no more popping in cold mornings
Daniel