Bike Makes More Power When Backing Off Throttle
#21
08-11-2018, 03:20 PM
The computerized era we're living in has us wrapped around the axle about data points and perfect tunes, and I've become guilty of it too, but at what financial and time cost?
It wasn't all that long ago that all bikes and all cars ran fine - thank you very much - with nothing more that a carburetor, a set of points and a condenser inside a distributor that used a simple vacuum-actuated plate plus weights and springs to control ignition timing. You set it, you forget, you run it.
Just a thought, but is your bike running well enough to make it through another year without dropping $400 with a tuner? Only you can answer that. But if you're going to do cams next year, and if it's not running all that bad, then maybe just ride it and forget it, and put that $400 you'd spend for an interim tune into something more tangible. If I understand right, the issue only happens near WOT, which isn't a place where you probably spend a lot of time.
Just thinking out loud
It wasn't all that long ago that all bikes and all cars ran fine - thank you very much - with nothing more that a carburetor, a set of points and a condenser inside a distributor that used a simple vacuum-actuated plate plus weights and springs to control ignition timing. You set it, you forget, you run it.
Just a thought, but is your bike running well enough to make it through another year without dropping $400 with a tuner? Only you can answer that. But if you're going to do cams next year, and if it's not running all that bad, then maybe just ride it and forget it, and put that $400 you'd spend for an interim tune into something more tangible. If I understand right, the issue only happens near WOT, which isn't a place where you probably spend a lot of time.
Just thinking out loud
#22
08-11-2018, 05:12 PM
Club Member
It wasn't all that long ago that all bikes and all cars ran fine - thank you very much - with nothing more that a carburetor, a set of points and a condenser inside a distributor that used a simple vacuum-actuated plate plus weights and springs to control ignition timing. You set it, you forget, you run it.
#23
08-11-2018, 06:16 PM
I built motors as far back as 1978 that made tons of horsepower and ran like a champ with nothing more than Carter AFBs carbs and Mallory dual-point ignition systems. Jet the carb, set the advance required for the cam, gap the points and plugs, set the dwell, and run the SOBs and never look back.
For those with limited resources of time and / or money, the pursuit of the perfect tune can take more resources than are available or justifiable for the task, and then "good enough" is just that. As Voltaire said, "Perfect is the enemy of good."
I don't fault anyone who wants to pursue that perfect tune, it's just not for me. For me, if the difference between "good enough" and "perfect" is several hundred dollars in parts, several hundred dollars of dyno time, and tens of hours of my time, then I'll take good enough any day.
Just my .02.
#24
08-11-2018, 06:21 PM
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#25
08-11-2018, 07:08 PM
Banned
If it was carburated it would be that it's too lean at WOFO , you back off the throttle from WOFO and there's less air and more fuel so it "runs on" so to speak,seeing as you've enrichened the decel I'd say it's an EFI version of this.
I think Larry is on to it.
I think Larry is on to it.
Last edited by badcooky; 08-11-2018 at 07:09 PM.
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