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Old 02-19-2009, 03:07 PM   #1
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Adjusting Dashpot Airflow

is it possible to adjust the dashpot values at higher rpm's to help with the "hanging rev" issue?

i seem to remember another way to do this but its right on the tip of my tongue and i cant remember

thanks for the help


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Old 02-20-2009, 06:43 AM   #2
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Quote:
Originally Posted by cwatson411 View Post
is it possible to adjust the dashpot values at higher rpm's to help with the "hanging rev" issue?

i seem to remember another way to do this but its right on the tip of my tongue and i cant remember

thanks for the help
Dashpot is used when the vehicle is moving. If the car is hanging a bit when coming to a stop for instance you can adjust dashpot decay rate. If the car flares on shifts you can look at the dashpot gain.

Or, if idle is a problem there are the ISC tables.

There are a lot of things to consider in this.
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Old 02-20-2009, 08:24 PM   #3
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what do you mean be flares when shifting? like where the motor gains speed when the clutch is depressed?
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Old 02-21-2009, 10:44 AM   #4
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What is the "dashpot gain" Blivit? Are you referring to a dashpot function like the preposition or a clip value. Or would it be one of the idle adjustments (ISC drive/neutral idle air)? Or something else?
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Old 02-22-2009, 07:35 AM   #5
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what do you mean be flares when shifting? like where the motor gains speed when the clutch is depressed?
Basically if you are accelerating, press the clutch in and instead of the rpms dropping or staying where they are they go up; that would be flaring.
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Old 02-22-2009, 07:36 AM   #6
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Quote:
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What is the "dashpot gain" Blivit? Are you referring to a dashpot function like the preposition or a clip value. Or would it be one of the idle adjustments (ISC drive/neutral idle air)? Or something else?
Dashpot gain would be the ISC dashpot gain which is in the dashpot scalars.
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Old 02-22-2009, 08:57 AM   #7
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Basically if you are accelerating, press the clutch in and instead of the rpms dropping or staying where they are they go up; that would be flaring.
yeah, thats what my car does. i thought it was me with my foot on the gas still but i made sure i didnt press the gas the next time and the rpms still went up a little.
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Old 02-22-2009, 09:14 AM   #8
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Quote:
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Dashpot gain would be the ISC dashpot gain which is in the dashpot scalars.
Blivit. There isn't anything labeled as "ISC dashpot gain" as such in the dashpot scalars. I suspect you mean the Dashpot Decel Rate (currently set at 0 (zero). There is no description for these settings. Confirm or clarify please?
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Adjusting Dashpot Airflow-dashpot-scalars.jpg  

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Old 02-22-2009, 12:33 PM   #9
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Quote:
Originally Posted by S0C0nFused View Post
Blivit. There isn't anything labeled as "ISC dashpot gain" as such in the dashpot scalars. I suspect you mean the Dashpot Decel Rate (currently set at 0 (zero). There is no description for these settings. Confirm or clarify please?
Thanks

No that's not what I mean. There is a parameter specifically labeled isc dashpot gain that may not exist with every vehicle.

If something is already 0 stock then chances are that item is not used in the calibration so changing it will probably not do anything or not do what you expect it to do.
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Old 02-22-2009, 12:58 PM   #10
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Well, if there is no "isc dashpot gain", then what would you suggest to control flaring?
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