Bonneville America Forums Forums Technical Forums Performance Mods Speed limiter switch off -UK

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unless your ECU is locked, the speed limiter setting is adjustable with regular numbers (you don't have to break code or anything). Not so much a remap by rather an edit.

you can also adjust out the factory speedometer error. if you were to change sprockets you would have to change the settings or be way off in speed.

also accessable are the options to switch off the emissions pump and O2 sensors so those resistors are not needed.

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As for dropping a tooth on the front cog...it might not work.....it's a speed limiter not a rev limiter.....trying to get my head round how it actually does what it does....e.g. if the ecu reads speed.....then either I will have an inaccurate speedo or it'll surely still cut out if I use a tune to compensate....?

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It does now seem a bit more complicated
I'm not sure what your speedo is driven by. There is a speedometer correction factor in the map that can be changed with TuneECU. So you can compensate for changes at least to some degree.
A tune wouldn't defeat the limiter but may improve your acceleration when near and up to it.

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You live in GB, Alan, call Corporate Triumph and ask to talk to one of their engineers. They tend to enjoy telling people how smart they are, when given the chance.

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This still seems very odd to me, too bad you are not conveniently located, so this could be sorted out easily.

So, last weekend I was at a party and the guy had a 2013 America sitting in his garage. I asked if he ever had it over 100 mph, he said many times. I asked about the speed governor, he said it was changed when the emission stuff was removed.

So unless there are market specific models (which could be) then it should be possible to change. Can bus or no.

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If anyone is interested we have now found a fix for the 95mph speed limiter on all 2012-2016 CANBUS America's and Speedmaster's.

It involves spending out on a new speedo and an EFI tune.

Just trying to see if it's worth spending the time and effort developing tunes. So say "Aye" if you're interested.

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I've added a link to this thread on the Triumph Speedmaster facebook group so hopefully that should increase the feedback.

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Thank you for that link.

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After many months trying to remove the 95-97mph speed restriction to my '16 plate Efi canbus America, I can thankfully say I've done it! I won't bore you with the painful and costly journey, unless any one really wants to know. This journey was also endured by Mike of Triumph Twin Power, who without his great knowledge, skills and expertise, but more importantly his patience(I did phone often), would not have been successful.
The short version to achieve this is as follows:-
1) Obtain a Efi, canbus '15 onwards Scrambler speedo (Part number- T2503032 was what I used).
2) Obtain a America/Scrambler modified tune from Triumph Twin Power. (Speak to Mike).
3) Fit speedo. Will locate into original chrome housing, components interchangeable (For the America).
4) Install new tune to Ecu. (This was tried, tested and successful using an America and Scrambler ecu, should also work with Speedmaster, but not tested.
Important! New tune will not hand shake with original America speedo, (Error code) has to be a Scrambler speedo.
5) Go out and see how fast your bike can truly go! (Track ridden, obviously).

When I test rode the new tune and mods, my bike topped out at 105mph in fifth gear, but this was with a 19T front sprocket and I had not maxed out the full rev limit. I have since learnt that if I was to stay in fourth gear up to the rev limit, that I should be able to achieve a higher speed or similar, if I went back down to an 18T in fifth. So initially 8-10mph more may not seem much or even worth it, but this was with me using my saddleman duel seat with back rest(sat higher up into the wind above the dart marlin screen), taller handlebar risers and a moderate side wind. More importantly, to me this was not all about speed, but more about being able to go as fast as the bike and set up could go without being stopped by an artificial speed restriction. There's now no looming barrier that the quicker you go the faster you reach it .......You and the bike are now free!

Mods I have carried out on my America.....
TTP Stage 1 Torque Induction Kit with sai and o2 sensors removed.
Bobbed front and rear fenders.
520 pitch chain replaced to 525 along with 42t rear and 19t front sprockets.
Original duel seat made into a solo, similar to Mavrick customers.
Led bulbs and Bonneville/Speedmaster rear light fitted. Rear indicators trimmed shorter with dark tinted lenses.
Norman hyde foot controls.
Original long exhausts shortened, debaffled and capped with slip-on exhaust tips.
Loobman chain oiler.
Avon cobra tyres.
Pretech 6 pot front brake caliper and Hell extended brake line.
Oxford cruiser heated grips.
Dart marlin screen.
Progressive 444 11.5" rear shocks.
Yss cartridge valve emulators and progressive front springs. Forks lowered 10mm through top yoke.
Risers extended.
Dual compressor air horns.
Chrome rear fender rack.
Bar end thread lugs removed with 330grams of lead for anti vibration per hand grip.

I hope this is of help to anyone wishing to free their ride.....and ride safe, cheers Rizz.

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Funny how a brand famous for the ton would limit the speed so you can't do it.

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