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Author Topic: Upping the line pressure?  (Read 2076 times)

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Offline KY_BOB

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Re: Upping the line pressure?
« Reply #10 on: August 11, 2008, 10:17:05 PM »
Quote from: BlueDevil on August 11, 2008, 10:01:09 PM
TM is removed 100%

Do you have the original servo in it or a Vette servo?  That will firm the 1-2 shift a little.
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Re: Upping the line pressure?
« Reply #11 on: August 12, 2008, 01:58:44 PM »
Blue, if you could, I think it would be helpful to do a scan while driving such that you experience the issue you want to address, and log as a minimum the following parameters:

RPM
Throttle Position
Vehicle Speed
Time of latest shift
Trans fluid temp
Trans current gear
Force Motor Line Pressure
Force Motor Actual Current

Dynamic Airflow, Calculated Load, and Delivered Trans Torque may also be interesting to look at.

After doing the scan, you can email it to me, along with your current tune.  Bob may be willing to take a look at it too.  I'll give you my email address if you don't already have it - give me a PM.

My scans are often around 30 minutes.  If you send a long one, it would be good to have an idea where in time you might have experienced an unsatisfactory shift.
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Offline bluedevil

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Re: Upping the line pressure?
« Reply #12 on: August 12, 2008, 04:14:22 PM »
Quote from: KY_BOB on August 11, 2008, 10:17:05 PM
Do you have the original servo in it or a Vette servo?  That will firm the 1-2 shift a little.

I have the vette servo from that group buy couple yrs ago.


Quote from: Main One on August 12, 2008, 01:58:44 PM
Blue, if you could, I think it would be helpful to do a scan while driving such that you experience the issue you want to address, and log as a minimum the following parameters:

RPM
Throttle Position
Vehicle Speed
Time of latest shift
Trans fluid temp
Trans current gear
Force Motor Line Pressure
Force Motor Actual Current

Dynamic Airflow, Calculated Load, and Delivered Trans Torque may also be interesting to look at.

After doing the scan, you can email it to me, along with your current tune.  Bob may be willing to take a look at it too.  I'll give you my email address if you don't already have it - give me a PM.

My scans are often around 30 minutes.  If you send a long one, it would be good to have an idea where in time you might have experienced an unsatisfactory shift.

Sure thing.  Im loading a new version of hptuners on my new puter tonight.
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Re: Upping the line pressure?
« Reply #13 on: August 13, 2008, 11:24:21 AM »
Quote from: BlueDevil on August 12, 2008, 04:14:22 PM

Sure thing.  Im loading a new version of hptuners on my new puter tonight.

You're as bad as Bob.  Now I'm going to have to load a new version too.   :tongue:
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Offline KY_BOB

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Re: Upping the line pressure?
« Reply #14 on: August 15, 2008, 08:22:52 AM »
Quote from: Main One on August 13, 2008, 11:24:21 AM
You're as bad as Bob.  Now I'm going to have to load a new version too.   :tongue:

 :evil5:
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2011 Silverado, Ext Cab Z-71 5.3, 6L80, Airaid CAI, Magnaflow cat-back, and a little tuning by me and HPT.

Gone but not forgotten, 2002 Victory red. The quickest lifted 4x4 AV in the US in it's day.


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