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TTS speed limiter issues

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Old Jun 19, 2022 | 07:25 AM
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Default TTS speed limiter issues

Having a problem with motorcycle being limited on the road but not on the dyno.
 
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Old Jun 19, 2022 | 07:42 AM
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need more info. is it rpm limiter or not obtaining speed?
dyno is a tool but does not necessarily follow real world spec's.
while the dyno does use a mass to calculate power, id does not factor in loads that are in the real world like ambient, wind resistance, road conditions and etc.
the computer uses sensor input to adjust so there can be a wide diff especially so if sensors are skewed.
 
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Old Jun 19, 2022 | 10:11 AM
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Originally Posted by bustert
need more info. is it rpm limiter or not obtaining speed?
dyno is a tool but does not necessarily follow real world spec's.
while the dyno does use a mass to calculate power, id does not factor in loads that are in the real world like ambient, wind resistance, road conditions and etc.
the computer uses sensor input to adjust so there can be a wide diff especially so if sensors are skewed.
It is not a dyno problem, it is an ecm problem. On the dyno it goes 165mph@7000rpm. on the road it goes 131mph@5100 rpm. Wind and road resistance isnt going to slow it down that much.
 
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Old Jun 19, 2022 | 07:58 PM
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Originally Posted by Junker
It is not a dyno problem, it is an ecm problem. On the dyno it goes 165mph@7000rpm. on the road it goes 131mph@5100 rpm. Wind and road resistance isnt going to slow it down that much.
We've got no issue running race bikes at 167 MPH down the straight away on the track with the same tuner, so it's not an issue with the tuner. Look at your recorded data and see what the injector pulse width and timing are doing. As long as they are still going along the same then your just flat out of power.
 
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Old Jun 19, 2022 | 09:11 PM
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Originally Posted by Steve Cole
We've got no issue running race bikes at 167 MPH down the straight away on the track with the same tuner, so it's not an issue with the tuner. Look at your recorded data and see what the injector pulse width and timing are doing. As long as they are still going along the same then your just flat out of power.
definitely not out of power! You told me there are limiters in the back ground we don't have access to, but I guess only the big name racers get the fixes, seeing you have ghosted me since telling that.
 
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Old Jun 19, 2022 | 10:47 PM
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How much HP does it make on the Dyno?
 
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Old Jun 20, 2022 | 06:48 AM
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Originally Posted by max headflow
how much hp does it make on the dyno?
160+
 
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Old Jun 20, 2022 | 08:15 AM
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Originally Posted by Junker
160+
OK. Connect an inline fuel pressure gauge and run her up..
 
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Old Jun 20, 2022 | 11:17 AM
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Originally Posted by Junker
160+
Wow. What's the build?
 
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Old Jun 20, 2022 | 12:06 PM
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Originally Posted by Lonewolf176
Wow. What's the build?
Its just an older custom 130". 128's making that power now.

 
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