Sport Mode Shift point Adjustments. (aka Real Sport Mode)
The next area to look at is the shift points in “sport mode”. Sport to me, doesn’t
feel much different from normal mode.In terms of shift points, here is the the normal
and sport mode 1-
To show that another way, this shows just the differences (delta) between the two tables:
We can see that all they do is change the shift points only in the mid throttle area. The low and high throttle areas are identical to normal mode.
I’m happy to leave the WOT settings alone -
I also want to prevent it sliding into 3rd on low speed turns and roundabouts -
Step 2: No 5th gear until 70 mph
Next, I’ve increased the minimum speed of the 5th to at least 70 mph -
Step 1: Remove 6th gear
5th and 6th are both overdrives on the 6L80.
I decided that I never want the box to go into 6th in sport mode.
So first thing is to effectively turn the box into a 5 speed box. I do this by raising the 6th shift point to over 300 mph
An interesting side effect with changing the shift speeds, is that the full PAL mode engages much more readily. My assumption is that I generate more G force at low throttle angles, causing the box to enter PAL mode.
Update: Have been running this tune for two months and I can say that I’m really
pleased with the results. Only observation, is that you need to prepare to switch
between normal and sport mode, as it can jerk a little as it drops a few cogs.
I may look at torque management next -
Step 3: Increase the 1-
So we now end up with effectively a 4 speed transmission -
OEM tune (left) vs my Real Sport Mode (right)
This table show the delta between the two maps. You can see I’ve not touched high/wot
areas, nor the 2-
|Which tuning Interface|
|Choosing a Wideband|
|Installing a Wideband|
|Checking the fluid level|
|Slow 2-3 change|
|Changing the Shift Times|
|Real Sport Mode|