2005 compensator
HDF Community Team
Joined: Jun 2006
Posts: 12,791
Likes: 2,621
From: san antonio
agree. Problem is UK roads and traffic. We don't have the long open roads like you do, a lot of the time we are just chugging along at 30 in suburban areas, trying not to creep over 30 and trigger the speed cameras, of which the UK has the most other than Dubai I think, and get a £100 fine and 30 point is on your licence. 4 of those and you are banned from driving for 12months! In Wales many of the roads now have 20mph limit! Can you imagine trying to chug along at 20? So, as i say we spend a lot of riding time at low speed.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,192
Likes: 7,694
From: Poolville
At 20 mph you should have just shifted into 2nd gear at 30 mph, 3rd gear.. If you are in 4th or 5th you are definitely lugging the motor... As long as you keep the rpm's @2000 or above you'll been fine @1-3% tps.. also note that under 2000 rpm is pretty difficult to fine tune when lugging in 4th or 5th gear.. Sounds to me you are creating the problem with your low speed driving habits and it's not the Tune.. Changed your driving habits before you spend on a Dyno tune to see how it reacts..
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Novice
Joined: Jun 2026
Posts: 20
Likes: 5
From: Leeds
At 20 mph you should have just shifted into 2nd gear at 30 mph, 3rd gear.. If you are in 4th or 5th you are definitely lugging the motor... As long as you keep the rpm's @2000 or above you'll been fine @1-3% tps.. also note that under 2000 rpm is pretty difficult to fine tune when lugging in 4th or 5th gear.. Sounds to me you are creating the problem with your low speed driving habits and it's not the Tune.. Changed your driving habits before you spend on a Dyno tune to see how it reacts..
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Novice
Joined: Jun 2026
Posts: 20
Likes: 5
From: Leeds
it has the Screaming Eagle 1550 stg 2 download on the stock ECU, which was done when the big bore kit and cams were fitted.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,192
Likes: 7,694
From: Poolville
Technically a stage 2 download is for cams, air cleaner and pipes.. I would imagine you need a stage 3 because you went with a big bore kit. And that might make all the difference it'll give you a little more fuel at low end and throughout the rest of the tune..
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Novice
Joined: Jun 2026
Posts: 20
Likes: 5
From: Leeds
If i remember correctly it was a specific download for the 1550 big bore with SE 203 cams.
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HDF Community Team
Joined: Jun 2006
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From: san antonio
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Novice
Joined: Jun 2026
Posts: 20
Likes: 5
From: Leeds
It is going on a rolling road dyno which will reprogram the ECU with optimum settings to to make the engine run at it.s best. The dyno tech checked the part number of the ECU and his software can access it and write to it. It is booked in on 13th July, the place is very busy!
Looking forward to it , ( but not the bill!), fingers crossed the bike will run so much better.