WOT gear change...0-60 times....

[Jackpine]

Originally Posted by Power Hungry

if you don't plan to change it, do go into it.

Bill, I think you meant to say "don't" here, where I've highlighted "do", but I don't feel comfortable editing your post.

So, I'm still confused (have pity on an old man).

As I understand you now, the VID is used whenever we are in Level 0 (stock) and the PCM sees the stock values for GR and TS. But, if we move to any other level (1, 2, or 3) the PCM is going to use values found in the Calibration section? Or, is it that the Calibration section values are only used if and only if we open the Custom Options menu?

My truck's GR and TS are both stock and match what's on the sticker, which I also have. I put these values on the custom tune form when I sent it to you. When I choose one of the custom tunes you wrote, and check the GR and TS, I always see 3.73 for GR (correct) but 2356 for TS (way small). My tires are 275/65R18s and I've found that I get correct speed and distance using a 7% squish value (using the Gear Calculator) of 2480 at the recommended pressure of 40 psi.

Or finally: maybe? What we REALLY need to do is first load your custom tune with NO custom options (which, as I recall now, I only did once, when I got my first custom tune from you). And then (if we REALLY think we can do better) go back, select the same tune level, then select Custom Options and then Load Previous Settings to get YOUR values that were written into the Calibration section to use as a baseline? (AND maybe this is what you were trying to tell me on the phone a while back and I was too stupid to understand?

And I know this is an extremely confusing post and I'm just glad I can feel free to express my ignorance.

- Jack

[Mark_123]

I was thinking the exact same thing Bill said !! Actually, since it's as clear as mud to me, I'll leave everything the same and wait on my custom tunes. As of right now, the speed matches the GPS, so I won't change anything. As soon as I were to change something, I'm sure I would do this

[Power Hungry]

I see where there is confusion about Custom Tuning versus Custom Options. It's a difficult concept to get your head around, especially if I don't explain it correctly.

In regards to the VID and TS/GR, here's the deal:

• The stock and the canned tunes all use the VID to handle correction for the speedo.
• Custom tunes (the ones I make) will NOT use the VID only if you ordered your tunes with non-stock tires and/or gears. If the tires and gears are stock, I don't change anything and the VID takes precedence, meaning you don't need to do anything.
• If the customer changes the TS/GR values, then those values take precedence over the VID.

I know it's a bit confusing and I am sure it's because I'm not explaining it properly. Here's a suggestion... It's not going to hurt to enter your own TS/GR as long as the values you enter are accurate. For the most part, the TS calculator is pretty accurate and you can get the axle code off the door sticker to determine your gears. If there's any question, just put the TS/GR values in and roll on.


As you mentioned Jack, you should always complete the first programming session before doing any custom tuning. This helps to ensure that the custom files are built from valid data from the PCM.

The Load Previous Settings menu option in the Custom Options is used only when you've made prior changes to the Custom Options and you want to reload those settings the next time through.

It may not be clear yet, but hopefully were at least going from mud to brackish.

[Mark_123]

OK, so let me see if I understand the "load previous settings" option. I am going to eventually get slightly bigger tires when these stock 31's wear out. May go with 33's at the most. If I change the TS/GR correctly to the custom tunes you are doing for me now, then I can just load previous settings when I switch back and forth from perf to tow and vice versa? Or, do I have to enter in the TS/GR each time I change back and forth? I hope not since I do tow a boat about 3-4x per month during the Spring-Fall months. Thanks for clearing it up a bit.

Mark

[Jackpine]

Bill! Thank you, thank you, thank you!!!

Everything's totally clear now (I hope). I've been going into the Custom Options menu every time I've loaded a new tune (switching from Tow to Economy to Stock, depending on need) and now I see my confusion. In the Custom Options menu, the GR and TS information is obtained from the Calibration section and it may be bogus (unless a valid set of numbers had been written there before, and you Load Previous Settings?).

So, whenever changing tunes, Mark. Simply enter the level you want and skip the Custom Options part. Let the PCM accept the new tune. Then, if you need to verify or change anything, go back, reload the same level, enter the Custom Options menu and in it, first thing, Load Previous Settings. Then, change or verify anything you would like to customize your tune, recognizing that for each value you even look at, programming is going to take longer.

Did I get it right, finally, Bill?

The problem is not in your explanation sir, the problem is in the explanation or lack of same in the Edge manual (but I know it's a tricky concept).

- Jack

[Chris74]

Okay.....I'm gonna try and make this as simple as possible for myself because now I am slightly second guessing what I should be doing!

Bill: My custom tunes were built without me specifying any change from the stock TS/GR!
My truck has 3:73's and stock 275/65 18's.........do you recommend I touch the TS/GR settings or not?
Currently I have my snow tires on and they are 265/70 18's.......again, should I just leave the settings alone?

I have tried playing around with many custom settings but I always keep coming back to your custom tune because it feels like it works the absolute best in every area........the only thing I tweek is the standard driving 1-2 shift and 2-1 shift. I drop it 1 because I want it to be slightly less aggressive when gently taking off from a dead stop!

[Mark_123]

Someone may have to help me a little here...so when I went to 87 tow (truck currently in 87 tow) and selected yes on custom tunes, I then went down to load previous settings. When I scroll through to check the settings, all of the shift point speeds are at 0??? Also, the tire size reads 2356 which is way off for 275/55-20 tires. Oddly enough, my speed is accurate with the GPS. If I put in the circumference of tires with 5% squish, my speed is about 2mph faster than GPS at 55mph.

Is there a way to see current settings loaded on the unit with 87 tow mode? I can't seem to get the "load previous settings" to load anything for me to view.

As I'm typing this, I'm thinking to myself "My truck runs great; I can't wait for my custom tunes; Why am I tinkering with this?" Oh well, guess it's part of my figure-it-out nature. Don't anyone lose any sleep or family time over this. I guess we're just tinkering around.

Merry Christmas

[Power Hungry]

Originally Posted by Mark_123

...selected yes on custom tunes, I then went down to load previous settings. When I scroll through to check the settings, all of the shift point speeds are at 0??? Also, the tire size reads 2356 which is way off for 275/55-20 tires. Oddly enough, my speed is accurate with the GPS. If I put in the circumference of tires with 5% squish, my speed is about 2mph faster than GPS at 55mph.

Is there a way to see current settings loaded on the unit with 87 tow mode? I can't seem to get the "load previous settings" to load anything for me to view.

Load Previous Settings is used to load the last custom settings you made. This is so when you change levels you don't have to go back through and re-enter every change you made. If you haven't made any changes to begin with, there's nothing to reload.

As I've mentioned before, the default tire size and gear ratio that is displayed in the custom options HAS NO RELATION TO THE ACTUAL TIRES ON THE TRUCK. They are some made up, arbitrary number. You have to put in the correct size for your your tires and you must also put in the correct gear ratio.

Squish is a relative term used to describe the phenomena that occurs where the tire patch contacts the road. Tire inflation, tread compound, tread pattern and aspect ratio (sidewall height) all have an effect on squish.

For a 55 series tires, I would use a 3% squish value since the deflection of the sidewall is going to be considerably reduced compared to say, a 75 series tire. For the size you specified, you should be around 2517mm.

Take care and Merry Christmas!

[Jackpine]

Originally Posted by Power Hungry

Load Previous Settings is used to load the last custom settings you made. This is so when you change levels you don't have to go back through and re-enter every change you made. If you haven't made any changes to begin with, there's nothing to reload.

As I've mentioned before, the default tire size and gear ratio that is displayed in the custom options HAS NO RELATION TO THE ACTUAL TIRES ON THE TRUCK. They are some made up, arbitrary number. You have to put in the correct size for your your tires and you must also put in the correct gear ratio.

Squish is a relative term used to describe the phenomena that occurs where the tire patch contacts the road. Tire inflation, tread compound, tread pattern and aspect ratio (sidewall height) all have an effect on squish.

For a 55 series tires, I would use a 3% squish value since the deflection of the sidewall is going to be considerably reduced compared to say, a 75 series tire. For the size you specified, you should be around 2517mm.

Take care and Merry Christmas!

At the risk of I'd like to mention that the tire circumference adjusted for "squish" is just a "ballpark" starting point. I had to make several changes to mine to get the speed (shown on the Gryphon) and the dash odometer to read correctly. With my 275/65-18 Goodyear Silent Armor tires, at the recommended 40 PSI, I use a value that is equivalent to 7% squish in the Gear Calculator application. And, the truck's dashboard speedometer reads 2 MPH fast at 75 MPH, but the odometer is accurate.

Merry Christmas everyone. We just got back from one of our Granddaughter's birthday day. She was born on Christmas Eve!

- Jack

[BluByu1986]

Originally Posted by Mark_123

Someone may have to help me a little here...so when I went to 87 tow (truck currently in 87 tow) and selected yes on custom tunes, I then went down to load previous settings. When I scroll through to check the settings, all of the shift point speeds are at 0???

I'm curious about this as well. I've just received my Gryphon in the Mail on Friday and I've been looking at all of the options on it. I've noticed these same numbers on multiple choices.

I don't have a problem with the TS/GS aspect and my number that I've entered has stayed in the program. I've only used the 87 Custom Tow so far.

Now.... When I FIRST plugged the Gryphon into the truck, I did select YES to Custom Program as I new I needed to change the TS in my truck (305/65-18's). As I read earlier in this Thread, it said I should have loaded the program as is and say NO to custom programing and then go back in and make my changes later. I hope I didn't screw up the new CUSTOM program from Bill. If so, do I have to get Bill so resend his CUSTOM program back to me that has all of his settings that he entered?????? Confused......

On the learning curve here, Thanks for any help given.......

Cheers,

Jamie