Hi All, There seems to be much confusion about the "No-Upshift" feature provided by the DiabloSports Predator and what the different modes choices are for... I have posted this information in different threads throughout the site but think it might be best if we consolidate this in one place. ADMINS >>> Maybe this should be placed it in the knowledgebase... But lets leave it out long enough for folks to know it exists so we can reference it when needed.
So here is the deal on the predator (DiabloSports) "No-Upshift" autostick mode...
-----TRANSMISSION-----------
In "Drive" mode you will always only see a "D" with either the "Stock" Autostick mode or the "No-Upshift" mode provied by the Predator. "D" will choose gears 1-5 at will and shift according to what "Automatic" means.
"D" does NOT mean 5th, It means "Automatic" shifting (up & Down)...
>>>>>>>>>>
Lets decribe how the Stock Auto Stick operation is different than the one provided by DiabloSport...
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STOCK (Chrysler) 1-2-3-4-D
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*The car upshifts freely untill it hits the "upper gear limit" set by the auto-stick.
When you go (-) from "D" while doing 30MPH you will enter autostick operation in "4". This does not mean you are IN 4th. It means the car will upshift freely until it gets to 4th and then will not shift into 5th...
In the Chrysler mode the Number represents the gear the car should not automatacally shift past... Not what gear the car is actually in.
If you hit (-) again you will be in 3. If in 3 you stop at a light the indicator will stay at 3. As you take off the car will shift 1>2>3 but not shift to 4th because you set at 3 as the limit.
If you are at 4 and hit (+) you will simply be saying "You can now shift freely 1-5" (which is the same as "D")... So you exit Auto Stick operation and enter into "D" (fully automatic operation).
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NO-UPSHIFT (DiabloSport) 1-2-3-4-5-D
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* The car will not upshift freely. You as a driver have to "Tell" the trans to upshift.
When you go (-) from "D" while doing 30MPH you will enter autostick operation probably in "3". It will enter into the gear the car currently is in at the moment.
If you hit (-) again (and your not going too fast) you will shift to 2nd and the engine will rev up, you WILL be in 2nd.
As you slow down the RPMs will drop and when they get low enough (~1000RPM) the car will downshft on it's own to avioid stalling. So if I were in 3 and I slowed the car to a stop, it will shift 3>2>1 on it's own. And the indicator will walk down with the gear shifts.
As I accelerate from the stop I'm in 1, and the car will NOT UPSHIFT on it's own... It will rev up untill I tell it to shift to 2nd, then 3rd, and so on... *That's what "No-Upshift" means...
*Post Edit1: "No-Upshift is true unless the driver pushes the car to the RPM set in the shift limiter... This would be ~5800RPM stock, or (6000-6500)RPM if adjusted by the the Predator. When the cars RPMs get to the shift limiter setting, the trans will shift up on it's own. But not before that limit. (Thanks to DaveDees and Dom for their proof read and this addition)
Because this behaivor is really the driver choosing what gear the car should be in (within allowable speed windows to maintain RPM), 5th becomes a valid choice in the autostick selection domain, and the car will provide you with 5 as a choice before hitting (+) and exiting autostick operation and going back to "D" (Fully Automatic shifting)
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--IN SUMMARY
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Chryslers STOCK autostick operation will downshift freely, and upshift freely to the gear limit selected. The gear upper limit selection does not change on its own.
To get "Back To 'D' (exit autostick) in the stock mode. You slap (+) untill you get to "D", or you hold (+) and it will jump to "D".
DiabloSports "No-Upshift" operation will downshift on it's own if it has to (to keep from stalling) and upshift on it's own when RPMs hit the shift limiter setting. When it downshifts (no matter how, on it's own or by you) it will walk down the gear indicator along with the shifts 5>4>3>2>1. As you speed up the trans will not upshift on it's own before the upper shift limit RPM. And it will also not allow selection of a gear that is out of RPM range for the current speed. This means you cannot tell it to go to 4th gear at 15MPH (it would stall the car)
To get "Back To 'D' (exit autostick) in the no-upshift mode. You slap (+) untill you get to "D". OR if you are limited by the speed to are going... Press and hold (+) and it will jump to "D" from where you are at.
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How to TEST if the predator mode installed put your car in "No-Upshift" behavior
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The strings set by the different mode choices in the predator are supposd to be ignored by your TCM if it's not the right mode for your car. So if your car's TCM needs Mode2 to work, and you install Mode1, The TCM should reject the string and you would see no change...
You can check to see if the car accepted the DiabloSport Mode by doing the following test...
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*Post Edit2: In a final note, I just want 2005 owners to know there is a known "Side Effect" when installing Mode1 into their car. Mode1 is NOT the proper code string for the No-Upshift behaivor, BUT some of the early TCM's (not all) accepts the code string anyway and reacts to it in an un-intended way (this is the defect). The cars autostick behaivor is unchanged (acts like stock), but in "D" (automatic drive), the upshift points are dramatically increased. The car will still shift Up-Down on it's own, but the upshifts always take place no less then 4200RPM even with minimal pedal position... This "side effect" does produce an interesting driving experience however (ask me how I know?) :158:
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END >>> FINALLY :i_rolleyes:
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So here is the deal on the predator (DiabloSports) "No-Upshift" autostick mode...
-----TRANSMISSION-----------
- If you have autostick +/- slapshifter, you have the 5 speed (NAG1). If not, you have the 4speed (42RLE).
- Autostick is not available with the 42RLE 4 speed transmission.
- "Auto Stick" can be running one of two ways. "Stock Mode (Chrysler)" OR "No Upshift Mode (Diablo Sport)"
- DiabloSport has only one single "No Upshift" mode... In the predator menu you will see mode1 & mode2 (maybe mode3), but these are all the same attempts to get you car into the single "No Upshift" mode provided by DiabloSport. The reason they have different modes on the menu is bacause there are different TCM's and they each require a unique mode setting string... DiabloSport does not know which TCM you have so they provide all the modification options and you have to find the right one through trial & test...
- In "Autostick (stock)" mode you will see "1-2-3-4-D"
- In "Autostick (DiabloSport)" mode you will see "1-2-3-4-5-D"
In "Drive" mode you will always only see a "D" with either the "Stock" Autostick mode or the "No-Upshift" mode provied by the Predator. "D" will choose gears 1-5 at will and shift according to what "Automatic" means.
"D" does NOT mean 5th, It means "Automatic" shifting (up & Down)...
>>>>>>>>>>
Lets decribe how the Stock Auto Stick operation is different than the one provided by DiabloSport...
-----------
STOCK (Chrysler) 1-2-3-4-D
-----------
*The car upshifts freely untill it hits the "upper gear limit" set by the auto-stick.
When you go (-) from "D" while doing 30MPH you will enter autostick operation in "4". This does not mean you are IN 4th. It means the car will upshift freely until it gets to 4th and then will not shift into 5th...
In the Chrysler mode the Number represents the gear the car should not automatacally shift past... Not what gear the car is actually in.
If you hit (-) again you will be in 3. If in 3 you stop at a light the indicator will stay at 3. As you take off the car will shift 1>2>3 but not shift to 4th because you set at 3 as the limit.
If you are at 4 and hit (+) you will simply be saying "You can now shift freely 1-5" (which is the same as "D")... So you exit Auto Stick operation and enter into "D" (fully automatic operation).
-------------
NO-UPSHIFT (DiabloSport) 1-2-3-4-5-D
-------------
* The car will not upshift freely. You as a driver have to "Tell" the trans to upshift.
When you go (-) from "D" while doing 30MPH you will enter autostick operation probably in "3". It will enter into the gear the car currently is in at the moment.
If you hit (-) again (and your not going too fast) you will shift to 2nd and the engine will rev up, you WILL be in 2nd.
As you slow down the RPMs will drop and when they get low enough (~1000RPM) the car will downshft on it's own to avioid stalling. So if I were in 3 and I slowed the car to a stop, it will shift 3>2>1 on it's own. And the indicator will walk down with the gear shifts.
As I accelerate from the stop I'm in 1, and the car will NOT UPSHIFT on it's own... It will rev up untill I tell it to shift to 2nd, then 3rd, and so on... *That's what "No-Upshift" means...
*Post Edit1: "No-Upshift is true unless the driver pushes the car to the RPM set in the shift limiter... This would be ~5800RPM stock, or (6000-6500)RPM if adjusted by the the Predator. When the cars RPMs get to the shift limiter setting, the trans will shift up on it's own. But not before that limit. (Thanks to DaveDees and Dom for their proof read and this addition)
Because this behaivor is really the driver choosing what gear the car should be in (within allowable speed windows to maintain RPM), 5th becomes a valid choice in the autostick selection domain, and the car will provide you with 5 as a choice before hitting (+) and exiting autostick operation and going back to "D" (Fully Automatic shifting)
-------------------
--IN SUMMARY
-------------------
Chryslers STOCK autostick operation will downshift freely, and upshift freely to the gear limit selected. The gear upper limit selection does not change on its own.
To get "Back To 'D' (exit autostick) in the stock mode. You slap (+) untill you get to "D", or you hold (+) and it will jump to "D".
DiabloSports "No-Upshift" operation will downshift on it's own if it has to (to keep from stalling) and upshift on it's own when RPMs hit the shift limiter setting. When it downshifts (no matter how, on it's own or by you) it will walk down the gear indicator along with the shifts 5>4>3>2>1. As you speed up the trans will not upshift on it's own before the upper shift limit RPM. And it will also not allow selection of a gear that is out of RPM range for the current speed. This means you cannot tell it to go to 4th gear at 15MPH (it would stall the car)
To get "Back To 'D' (exit autostick) in the no-upshift mode. You slap (+) untill you get to "D". OR if you are limited by the speed to are going... Press and hold (+) and it will jump to "D" from where you are at.
-----------
How to TEST if the predator mode installed put your car in "No-Upshift" behavior
-----------
The strings set by the different mode choices in the predator are supposd to be ignored by your TCM if it's not the right mode for your car. So if your car's TCM needs Mode2 to work, and you install Mode1, The TCM should reject the string and you would see no change...
You can check to see if the car accepted the DiabloSport Mode by doing the following test...
- With the car ideling and your foot on the brake place the gearshift in "D"
- Slap (-) once...
- If the indicator sits at 4, you are on Chrysler STOCK mode.
- If the indicator walks down to 1, you are in DiabloSport No-Upshift Mode
-----------
*Post Edit2: In a final note, I just want 2005 owners to know there is a known "Side Effect" when installing Mode1 into their car. Mode1 is NOT the proper code string for the No-Upshift behaivor, BUT some of the early TCM's (not all) accepts the code string anyway and reacts to it in an un-intended way (this is the defect). The cars autostick behaivor is unchanged (acts like stock), but in "D" (automatic drive), the upshift points are dramatically increased. The car will still shift Up-Down on it's own, but the upshifts always take place no less then 4200RPM even with minimal pedal position... This "side effect" does produce an interesting driving experience however (ask me how I know?) :158:
-----------
END >>> FINALLY :i_rolleyes:
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