This is a thing now, well actually has been for the last 6 months.
Transmission tuning, for ZF 6 & 8 speed boxes.
6HP26 in;
L319, L320, L322
2.7L, 3.6L diesels, 4.0L, 4.4L, 4.2L petrols
6HP28 in;
L319, L320, L322
3.0L diesel, 5.0L petrol
8HP70 *** in;
L319, L322, L494, L405
3.0L, 4.4L diesels, 3.0L & 5.0L petrols
And the Jags too...
Attachment 174641Attachment 174642Attachment 174643Attachment 174644
(*** 8HP in the "new" models from 2017MY like Velar, Disco 5, and the 2017MY-onward L405 & L494 is still in development, coming soon!)
Why tune the transmission?
It pains me to say it, but JLR didn't have the budget for test & development like BMW, VW or the other guys had. So they got it "good enough to sell" and then sent it.
Fortunately some very smart and dedicated guys have put in the effort to improve on the factory calibrations. Many months of road testing to fine tune the calibration.
The benefits of the transmission tune vary a little depending on diesel or petrol.
But generally speaking, faster and smoother shifts, the shift points are revised to better utilise the increased power in conjunction with an engine tune. Better throttle response, especially from a standing start.
With the diesels the gear selection is altered to keep the rpms up so the motor doesn't lug.
The torque converter lockup has been altered to stop wasting power, which in turn keeps the fluid from overheating.
It picks the right gear at the right time, no delay or hesitation when you put your foot down.
All around they drive much nicer, more lively & responsive. Makes the Land Rovers drive less like trucks, more like cars.
The best real world example I can give, is when you drive through a roundabout. With the factory calibration you put your foot down leaving the roundabout and nothing happens while it tries to decide what you want... with the tunes it picks the right gear and you go.
How?
We need physical access to the vehicle to load the transmission tunes (as the TCM is inside the box) so I can do this for people in Sydney, or if you bring the car to me from out of town.
Possibly I can make arrangements for people in the other capitals as well, though that relies on organising at least three people instead of two, so keep that in mind.
The tunes can only be loaded with our equipment; cannot be done with IID, Nanocom or anything like that. Only we can do it.
Can you fix my shudder? torque converter surge? etc...?
No, we cannot fix mechanical problems with software. If your torque converter is shot, it's shot. If your clutch packs are worn out, they are worn out...
How much does this cost?
The transmission tunes alone are $880.
When bundled with an engine tune this is discounted to $495, plus the cost of the engine tune (which is $1100 for diesels and naturally aspirated petrols).
So $1595 for both tunes together on a diesel or NA petrol.
It's hard to describe in words just how good these things are to drive after the tunes, but if you have any questions, feel free to ask!
Cheers,
Cameron.
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