[dakotan]

Any thoughts/ comments on changes to power curve of 2007 sprint st? Seems like previous generation had lower end grunt. Was change made solely for mileage?New to forum and glad to be here.

 

[DaveM]

Welcome aboard Dakotan,
this is a great website lots of helpful folks and a good sense of humour as well.

I cannot answer your question though as I didn't know it had changed.


DaveM

 

[motomyth]

I talked about that with my dealer just Friday. The new fuel injection runs a lot leaner toward the bottom to help with emissions requirement. I don’t think it would be that big of deal. It would probably help keep the front end down on those hard take-offs. Oh ya…I like when it does that.

Jeff

 

[GRN]

I haven't seen anything yet to suggest that the output from the '07 ECU update is significantly different :???: I know there was some consideration for improved gas mileage...

 

[dakotan]

I read a post somewhere. The author was saying that the '07 had a couple more HP but that it didn't seem worth it to him because peak torque didn't arrive until much higher RPM. When I looked at the specs for '06 vs '07 they were different.
2007eak power is an impressive 125bhp @ 9250rpm while peak torque of 77ft.lbf arrives at just 7500rpm.
2006eak power is an impressive 123 bHP at 9,250 rpm while peak torque of 77 lbs. ft. arrives at just 5,000 rpm.
2005eak power is an impressive 125PS @ 9,250rpm while peak torque of 104Nm arrives at 5,000rpm.
A couple of these specs were pulled off of the triumph website.
I wondered if the rationale for this was easier starting, fuel mileage, emissions control? Is it reversible? would you want to?etc.
I test rode an'07 - which was awesome- and told me all I really need to know. I will be picking mine up in 5 days :-D :-D Just wondering what the change was for.

[ This message was edited by: dakotan on 2007-02-11 11:07 ]

 

[Pcdabbler]

Triumph were basically forced to run a higher spec ECU (better contol of mixture) and leaner map to pass the new Euro III Emissions standards. Theres not much benefit to us, the users .. Still, that doesn't stop the salesman selling it as an, "improvement" over the 05/06 Bikes ..

The Brussels brigade (EU, common market) seem to be on an emmissions crusade here, and want to set the world an example.

[ This message was edited by: Pcdabbler on 2007-02-11 04:55 ]

 

[dakotan]

PCDabbler- is it possible to reprogram the ECU, is it worth it? I wonder how much difference in low end grunt you feel day to day? thanks the responses

 

[wills]

The best tune is a custom MAP written for your bike on a dyno. I did that with mine and it makes a big difference on power output and response. I you live at a high altitude like me, the factory MAP is going to be on the rich side. My dyno showed 117 RWHP uncorrected. This translates to about 135 crank HP when you add 10% for drive train loss and 5% for altitude. Of course all dynos measure differently so the numbers can be subjective, but my ass says big improvement. :hammer:
We used the Power Commander with the O2 sensor blocked, and the bike has the K&N air filter, TORS MAP and muffler. I also installed the NGK Iridium plugs.

 

[PeirreOBollox]

the dealers in the UK are holding a open day Feb 24/25 for the launch of the new tiger, and they are doing test rides for the whole "urban" range inc the 2007 sprint so maybe I`ll try out the 07 ST and see if theres a difference

 

[dakotan]

Wills- my house is at 7100' above sea level and many of the rides I plan on taking are through the mountains so having the bike dyno'ed might be worthwhile. I know the Triumph dealership in Denver has the right equipment so after break in period I definitely consider.
Pierre- let me know what your test ride demonstrates. I have now FOUR more days till I get my bike...will keep you posted.