2016 800XRt - Removing Throttle Restriction?

[pjensen641]

Greetings.

Has anyone ever tried editing the ETV (Throttle Map) tables to remove the restriction at high rpms.  This appears to be how Triumph likes to limit the power of the Tiger to 95hp.  The same thing happens on the new Tiger 900 to a greater extent.

Here is the '16 800XRt throttle map.  Notice how at higher throttles, it restricts actual throttle opening to 88% (upper right region)

[AvgBear]

This appears to be how Triumph likes to limit the power of the Tiger to 95hp.

It may be that a (stock) T800 doesn't have the breathing (combustion chamber efficiency / intake - exhaust equipment) to flow more above 8,000 RPM? If so, more throttle opening would just lower intake vacuum with little to no performance improvement? 

[pjensen641]

Originally Posted by AvgBear

It may be that a (stock) T800 doesn't have the breathing (combustion chamber efficiency / intake - exhaust equipment) to flow more above 8,000 RPM? If so, more throttle opening would just lower intake vacuum with little to no performance improvement? 

Its quite possible that I won't make any more power, but the thought of them dumbing the powerband down just to appease a power restriction from another country (I live in the US) just bothers the hell out of me.

Want to see something even more drastic?  Check out the new Tiger 850 Sport.  It is very obvious what they are doing here.



This is what the map should look like, and what is on the 900.  That being said, both are more restrictive than the 800 to keep down to the 95hp limit.



The same method was used to restrict the 800 to the 35kW limit for UK learners.  I looked and the only difference was the ETV table.  Everything else was the same.  I think you can agree that its easy to see.  The throttle only opens to 32%!

[pjensen641]

Here is my plan for the 800 XRt.  I am only going to edit Sport mode.

From the original here...



To the unrestricted here...



I did a bit of smoothing in some of the midrange, but mostly just making sure the throttle stays open until redline.

[paul_o]

How did you get on?  Did you notice gains?

The chance discovery of the power limiting has drawn me back to consider the 800/900.......

[pjensen641]

Originally Posted by paul_o

How did you get on?  Did you notice gains?

The chance discovery of the power limiting has drawn me back to consider the 800/900.......

I am more active over on ADVrider, so I posted my findings over there.  The 800 doesn't have a huge amount more on the top to give, but I did notice it a little.  I think a 900 would be substantial gains.  You would open up 2,500rpm more top end.  You could potentially buy a Tiger 850 Sport and De-restrict it to be more powerful than a 900 theoretically.  I have seen 1 or 2 other people who have opened up their 900's, but not many details.  There is a link to another thread in my ADVrider thread with one more report of using this method.  Only thing it will cost you is a warranty apparently 

https://advrider.com/f/threads/removing-15-tiger-electronic-throttle-restriction.1490921/

[paul_o]

interesting.  I'll follow over there too - I'm a long time (albeit dormant) member......

[tcbandituk]

I thought the ECU's were locked down now?
My 2018 XRt is out of warranty anyway now, so would be interesting to play with this 

[KildareMan]

Originally Posted by tcbandituk

I thought the ECU's were locked down now?
My 2018 XRt is out of warranty anyway now, so would be interesting to play with this 

Follow instructions on tuneecu for ecu access on latter models.

[tcbandituk]

Originally Posted by KildareMan

Follow instructions on tuneecu for ecu access on latter models.

I'm off to the garage, I may be some time