Sprint 955 2002 model tips needed.

[Sylvester]

Please excuse my general Triumph Tripple Ignorance, not really had time to get to know it that well yet. I normally buy stuff already worn out and rebuild it hence you get to know stuff quick. My newish purchase is a 2002 ST Sprint with only 12k on the clock so doesn't need that much yet. First thing I noticed was how snatchy the F.I. system worked when rolling on and off the throttle. I was advised that its probably due to all the emissions junk fitted for the German market so started to look for a new stealthy end can so as not to attract attention from the local plod.
I decided on a can made by A16 road and race supplies in UK. The can looks very stock just a bit shorter with no badge (or Cat) weighs much less. It's not loud and runs fine with the stock map. The bike is much better and theres no popping on the over run which it used to do with the stocker. My question is, do you have to adjust the mapping to match the new end can? Also can you remove the secondary air system from the bike and will it make any difference?

[PaulM]

Have a look here
http://www.triumphrat.net/sprint-for...t-st-955i.html

Cheers Paul

[Mickea]

Hi Sylvester, good luck with the silencer, I have a "german" sprint with a triumph "off road" silencer and original for TUV but wasnt aware of any extra emission stuff for German market?
All best Mick

[RexxyPup]

The chances are that your snatchyness is more likely due to imbalanced throttle bodies!

[Sylvester]

According to the Haynes Manual, US and German market models have a secondary air system that lets clean air into the exhaust system at certain rpm to aid exhaust clean up. I think the Bonnie has a similar system that can be easily disabled. Not sure of any benefit on the tripples as I haven't looked into it yet. I have my lap top configed for the triumph diagnostics and re tune but cant get the PC and the bike to talk to each other. I think I have the wrong lead. I have a BMW twin as well so my vaccum gauges dont fit the tripple!!!! I also look after a VFR 750 so I'll be getting some gauges to fit that and I'll be able to check the throttle body sync. Hopefully all will be revealed. To be honest the throttle response is not bad it's just me being picky, it's certailny much better with the new end can. I also managed to get all the play out of the gear linkage this week end by taking it from the bike and "re-peening" the steel ball end fixures with a small pin punch. I will change all the ball-ends for better eye-ends in the summer. I'm also looking for a double bubble screen and some decent brake/clutch levers as I'm not keen on the OEM stuff. Has anyone tried the relay mod for the head lights that uses both lights for dip and main beam? The standard set up sucks.

[triumphpat]

Sylvester, make sure you used the USB driver from the link on the tunecu website and not the driver that came with the cable. The supplied driver won't work. The cable might be ok.

[Sylvester]

Cheers I'll try the driver when i get time. I've seen elsewhere on this site the crank snapping stories for this model that i've never heard before. How common is it and does anyone know if the is a particular batch of frame numbers affected?

[RexxyPup]

I have the dual relay setup - looks much better and lights the way slightly better

I have pazzo levers on my bike as a damaged clutch hand needs some help. THey do that and look cool (blue trim of course!)

I have also removed the SAI from my bike as the Massive Midrange Tune is for a non-SAI bike.

I bought some nicely made (which I now have spare because my new cam cover has no reed valve holes) blanking plates to replace the reed valves, removed the gubbins from the airbox and made a duralumin plate to cover the hole. Replaced the tune and the bike runs fine. No real sign of performance improvement, but the engine does seem generally smoother for it and less banging from the exhaust on over run