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Thanks,

Persisting here and loaded it on my laptop which is windows 10 and it is now good except no full screen, but that is ok.

Program must not like my windows 7 desktop.

Now to learn how...

Changing resolution does not help (1920x1080).

Here are two screenshot of what I see on screen and it will not go full screen.

First picture is a cropped version of the second which is my...

Thank you have done so, but the BC interface is part screen/small and the fields with the number values are scrunched together making it very hard to read.

Will not expand to full screen??

Great explanation!

I definitely have only 13 wires in the plug because I converted from a manual 6 to the auto 4 and have the details of the wiring that I used to connect to the 411 PCM!

So NO...

https://youtu.be/dbVYrR1xoCc

How does the 411 PCM "calculate" the input shaft rpm PID if it is not a sensor value?

Thank you!

Thanks for info and clarification.

The fact that input shaft rpm is NOT a sensor value makes trying to assess the shift time of minimal value and may in fact be misleading.

Are the shift...

Hi all............

I have been away from the car scene since my last post but am back to working on the cars up here in the cold frozen north.

The procharged 4L60e car runs and drives great but...

Back to the top.

You have started a very good thread here for those of us with 4L60e's trying to make them live a bit longer.

I will make some changes and data log my input/output rpm's again with torque...

Thank you!

Excellent clear explanation.

Very interesting and useful file. Thanks for posting this.

I just checked my torque management>spark retard vs torque reduction and spark retard vs torque loss and I have a whole row of zero's.
...

Does this apply to a "built" 4L60e also?

Not sure what the cost of the Sonnax 2.84 input carrier kit is, but would this be a good option?

Instead of 3.06 to 1.625 stock, the Sonnex unit is 2.84...

There are two areas on your scan that look like WOT passes.

The first one is a lot quicker and faster with less converter slip.

You are sitting still trying to build boost but only get a couple...

I do not think the PCM cares or knows whether it is a 60 or 65!

These are speedo tab numbers from my 2002 Camaro 4L60e with 3.70 gear. Tires are 26.4


136150

I have only made two full quarter mile passes on my 4L60e with 3600 converter.

I am looking for other WOT 4L60e scanner log files with the transmission input and output shaft rpm's logged.

If...

Thanks!

Exported the hp tuner scanner file to excel and charted the apparent transmission slip.


Around 540 ft lbs torque.

135494

Is 1.577 seconds too long for a 1-2 shift?

135495

Looking at the 2-3 shift input to output shaft ratio.

2-3 starts at about 1:10.603 and completes at 1:12.977. That is 2.37 seconds of clutch slip under a lot of torque.

How much will torque...

All great comments, appreciate the input. Continuing to learn.

In 20/20 hindsight..................I could have framed my question differently in the original post.

I should have asked for...

3.70 gears in Moser 9 inch.
255/50R16 MT drag radial


Transmission temperature was always low as per data log.
It was hot and so the twin intercoolers were likely heat soaked.

Note shift rpm...

Finally had a chance to get to the Friday night street legals and made two passes.

Full tank fuel, stock wheels front and back, full exhaust and weight in street trim.

Spun a bit on the first...

Thanks for responses.