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Intermittently lower performance mid-range and top-end

1011 Views 10 Replies 5 Participants Last post by  LB83
I recently upgraded to an SV1000s (2005) because I wanted more power than my previous SV650s (2001).

With the 650 there was like a problem where it was down on performance very noticably especially in mid-range and top-end power (60 - 70% of power is my guess)
I figured it was the bike or carbs that would've been the problem here. Anyway, now having the 1000 ofcourse is a lot more powerful, although during my last ride It felt like it was having the same symptoms as the 650 had. Noticably lower mid-range and top-end power.

Due to the fact it's showing the same symptoms I am ofcourse wondering if I am doing anything wrong with the bike, as in my riding style for instance that makes it behave like that.
I have to say I do blip the throttle a lot, even at low speeds or in traffic (cuz of the sound ofcourse). Could that be the issue here? Some rides it feels like full power, but last ride it was definitely lower on power. And by intermittently I don't mean every other minute or so. For example yesterday I recall it rode fine the whole 50km (30 miles) I rode. But today it felt slower the whole ride, at least when I went WOT.

I just wonder if it's me or the bike's 'fault'. The bike is completely stock apart from LeoVince slip-ons. 56k km/35k miles on the clock.
I look forward to any response, thank you in advance.
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Only just saw this
Have had tps issue on car recently and sounds similar
Throttle responds to point the no more
This was resistance style tps
This type superseded by magnetic types then by alternative approaches altogether
More pedal does nothing as engine management doesn’t get signal past certain position putting upper limit on fuel flow and power
Actual physical throttle wider than indicated and may decrease output as actual charge leans out
Would indicate tps replacement
With these sorts of things diagnosis can be the most problematical thing and mechanic can be good value money and time wise though it can be frustrating in hindsight how obvious it looks and $$ disproportionate
Basically if bike not worked on before would hope parts like this last the life of bike
Second best is it’s a common issue common symptoms and common fix
1 - 1 of 11 Posts