HPTuners: Converter log
HPTuners: Converter log The other day I went out to our local 1/8 mile dragstrip to test out a prototype B&M converter on our 2001 Camaro SS. Although it was pretty hot out there and we had our street tires on, we did not get to run a better time than previously, I was able to get great converter data. This is about an 11" converter.
The first image shows the flash stall speed of the converter. By looking at the Engine RPM (SAE) it is a 3200 converter. You can easily see the Engine RPM in the graph “waiting” for the Trans Input Shaft to catch up, displaying the converter stall speed. This would normally not be visible if you were looking at the tachometer, as it occurs in a fraction of a second.
The next image shows the data from the top of first gear to demonstrate the efficiency of the converter. By comparing the Engine RPM (SAE) and the Trans Input Shaft RPM we get an efficiency percentage of 97%. The efficiency pretty much stays right around the 96-97% range in the other gears. Also, my shift settings are 6300 rpms and 39 MPH ... by the looks of it and doing some calculations, I can up the WOT Shift Speed up to 46 MPH. By using the 97% efficiency factor, I was able to verify the top speed in each gear using one of the online gear/mph calculators. I simply multiplied the results by the % loss and all my numbers lined right up!
Please note the Trans Fluid Temp, I relocated my Trans cooler to get better airflow. I placed it under the FTRA scoop (deflector removed) on the driver's side, directly infront of the primary fan. It seems to work very well, a little to well I think.
The first image shows the flash stall speed of the converter. By looking at the Engine RPM (SAE) it is a 3200 converter. You can easily see the Engine RPM in the graph “waiting” for the Trans Input Shaft to catch up, displaying the converter stall speed. This would normally not be visible if you were looking at the tachometer, as it occurs in a fraction of a second.
The next image shows the data from the top of first gear to demonstrate the efficiency of the converter. By comparing the Engine RPM (SAE) and the Trans Input Shaft RPM we get an efficiency percentage of 97%. The efficiency pretty much stays right around the 96-97% range in the other gears. Also, my shift settings are 6300 rpms and 39 MPH ... by the looks of it and doing some calculations, I can up the WOT Shift Speed up to 46 MPH. By using the 97% efficiency factor, I was able to verify the top speed in each gear using one of the online gear/mph calculators. I simply multiplied the results by the % loss and all my numbers lined right up!
Please note the Trans Fluid Temp, I relocated my Trans cooler to get better airflow. I placed it under the FTRA scoop (deflector removed) on the driver's side, directly infront of the primary fan. It seems to work very well, a little to well I think.
Last edited by Flame Throwing SS; Jul 11, 2005 at 04:50 PM.
Not to hijack your thread, but how did you manage to be able to see your trans temp!?!?? Id love to be able to see this, I have version 1.7 installed and I dont see this in there. Thanks
Right click on the chart display and select Insert. A window will pop up showing different tables of PIDs, click on Transmission, then General, and double click on Trans Fluid Temp (F, C)
Edit: If you are using the Default Config, you will need to delete PIDs to add more.
Edit: If you are using the Default Config, you will need to delete PIDs to add more.
Originally Posted by Flame Throwing SS
Right click on the chart display and select Insert. A window will pop up showing different tables of PIDs, click on Transmission, then General, and double click on Trans Fluid Temp (F, C)
Edit: If you are using the Default Config, you will need to delete PIDs to add more.
Edit: If you are using the Default Config, you will need to delete PIDs to add more.
