Tuning our ZF8 gearbox
#1
Tuning our ZF8 gearbox
Good-morning! Has anybody tuned their ZF8 Gearbox yet? With my old M4 I was able to tune my DCT to gain noticeable acceleration improvements not to mention the improvements on the Fly.. I also tuned my 7G-tronic on my CLK Black Series and got great gains.
The ZF8 is one of the most common sports car Autos so I'm assuming there must be some tuning company out there? Thanks!
The ZF8 is one of the most common sports car Autos so I'm assuming there must be some tuning company out there? Thanks!
#3
The following users liked this post:
ndabunka (01-21-2018)
#4
Good-morning! Has anybody tuned their ZF8 Gearbox yet? With my old M4 I was able to tune my DCT to gain noticeable acceleration improvements not to mention the improvements on the Fly.. I also tuned my 7G-tronic on my CLK Black Series and got great gains.
The ZF8 is one of the most common sports car Autos so I'm assuming there must be some tuning company out there? Thanks!
The ZF8 is one of the most common sports car Autos so I'm assuming there must be some tuning company out there? Thanks!
#5
2 cents,
Dave
#6
#7
I've been looking for a TCU tune for our cars for awhile. No luck so far.
I think the new db11 or vantage will use a version of our gearbox? Maybe by then someone will offer something.
I think a lot of Maseraties and BMW models use the zf8 as well it is strange nothing is on the market for it.
I think the new db11 or vantage will use a version of our gearbox? Maybe by then someone will offer something.
I think a lot of Maseraties and BMW models use the zf8 as well it is strange nothing is on the market for it.
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#8
I've been looking for a TCU tune for our cars for awhile. No luck so far.
I think the new db11 or vantage will use a version of our gearbox? Maybe by then someone will offer something.
I think a lot of Maseraties and BMW models use the zf8 as well it is strange nothing is on the market for it.
I think the new db11 or vantage will use a version of our gearbox? Maybe by then someone will offer something.
I think a lot of Maseraties and BMW models use the zf8 as well it is strange nothing is on the market for it.
#9
The following 2 users liked this post by Stohlen:
DPelletier (09-29-2017),
ndabunka (01-21-2018)
#10
The following 2 users liked this post by domino_z:
DPelletier (09-29-2017),
ndabunka (01-21-2018)
#11
It won't change gear automatically if mid corner, brake suddenly in higher gears and it will rapidly downshift.
Lots of throttle even in drive will hold lower gears until higher revs as will most autos, clever part is after a period of "spirited" driving it will still hold at high revs in lower gears even at smaller throttle opening until a certain time period has elapsed and it "knows" you're driving more slowly.
One professional reviewer raved sbout how good the auto box was, it does seem to have an uncanny knack of being in the right gear most of the time.
My only minor gripe is even in sport mode it will start from second unless you manually select first gear with stick or paddle.
#12
#13
You mean 2015 Vanquish came with the ZF 8-speed, same goes for the 2015 Rapide..
The newer era Vantage line-up never had the ZF(2006 to present), only came with the Graziano 6 and 7 speeds(in either ASM or manual shift configurations).
The newer era Vantage line-up never had the ZF(2006 to present), only came with the Graziano 6 and 7 speeds(in either ASM or manual shift configurations).
__________________
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
#14
Agreed, my observations driving my F Type R suggest seriously good optimisation.
It won't change gear automatically if mid corner, brake suddenly in higher gears and it will rapidly downshift.
Lots of throttle even in drive will hold lower gears until higher revs as will most autos, clever part is after a period of "spirited" driving it will still hold at high revs in lower gears even at smaller throttle opening until a certain time period has elapsed and it "knows" you're driving more slowly.
One professional reviewer raved sbout how good the auto box was, it does seem to have an uncanny knack of being in the right gear most of the time.
My only minor gripe is even in sport mode it will start from second unless you manually select first gear with stick or paddle.
It won't change gear automatically if mid corner, brake suddenly in higher gears and it will rapidly downshift.
Lots of throttle even in drive will hold lower gears until higher revs as will most autos, clever part is after a period of "spirited" driving it will still hold at high revs in lower gears even at smaller throttle opening until a certain time period has elapsed and it "knows" you're driving more slowly.
One professional reviewer raved sbout how good the auto box was, it does seem to have an uncanny knack of being in the right gear most of the time.
My only minor gripe is even in sport mode it will start from second unless you manually select first gear with stick or paddle.
A lot of the high gear numbers trans don't require 1st gear unless at a dead stop. Usually any auto trans doesn't use 1st gear unless stopped, but even the manual trans dsg or single clutch types that are 7+ gears don't use 1st gear because it gets to jerky/hesitant when trying to engage the gear from a slow speed.
We've thought about getting into ZF auto trans tuning, but like most have said..it works well out the box, there's no real improvement to be made unless you've maxed out the limiters. It's just ZF's limiters are usually there because the internals can't handle more. The SVR is pretty much maxing out the limits of what the engineers quoted for the ZF 8HP70 to handle (700Nm). Years have proven that ZF's quotes are little underrated so a little more is expected. What I don't know about, is if Jag actually beefed up the 8HP70 to handle a lot more power than quoted. If that was the case, might of just been cheaper to use the 8HP90 versus 1-off custom parts to make the 8HP70 stronger.
__________________
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
#15
My bet would be that they have not. Historically, ZF has not allowed the OEMs make any changes to their 8 speed box; even the gear ratios aren't adjustable. Kind of a "you can have what we say you can have" situation. To my knowledge, FCA is the only company to have a modified version and that's only because we have our own plant.
#16
#17
Is the AT controlled by the same processor as the engine? If so, I suspect VAP can make that change for you.
#18
We're working on a solution to flashing the TCU, most places require an actual already programmed TCU in hand, to develop a flashing tool. It's not an overnight thing so this "donor" car would be without the TCU for few months...needless to say, not everyone is jumping at the fact.
__________________
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
________________
Christopher Edgett
Technical Director
Velocity Automotive Performance Limited
214 Maple Ave.
Oliver, BC
Canada V0H 1T9
Office Tel: (250) 485-5126
www.VelocityAP.com
Tuning@VelocityAP.com
The following users liked this post:
Unhingd (01-21-2018)
#19
From my self-testing, the car indeed starts in 1st gear from a dead stop. This is in regular D and in Sport (Dynamic on or off).
The only time it starts in 2nd is when you are in manual mode. In reality, this frustrates me a lot. In manual mode, it should still start in 1st, not 2nd. Don't really get the logic with that.
I've done about a good 30-45 minute of testing (because the car has no gear indicator when in one of the auto modes) and it indeed starts in 1st gear, everytime.
The only time it starts in 2nd is when you are in manual mode. In reality, this frustrates me a lot. In manual mode, it should still start in 1st, not 2nd. Don't really get the logic with that.
I've done about a good 30-45 minute of testing (because the car has no gear indicator when in one of the auto modes) and it indeed starts in 1st gear, everytime.
#20