Gazellio wrote:

Japseroony wrote:

Hi Gaz, how did he do it? ECU off and split or via OBD?

"Ecu has to come off...no other way.....the ecu has the 'read' funtion disabled by Bosch at the factory.

It is a 45 minute job......lid has to come off ecu.....but I have a source of new lids so no trace left of it being opened "

So now we know

No problem with what you have said Gaz but do you have a supply of stickers that are on the ECU as these get damaged when splitting them.

In order to split you have to heat the glue that holds the ECU together and that damages the LR stickers etc.

I think splitting an ECU on a £68k+ car is somewhat dangerous as if LR find out and by looking/driving they will, the warrantey is/could be voided and I for one dont want this so I will wait until the tool manufacturers sort out re-mapping via OBD and offering a switchable version same as the previous versions  "UNDERSTEER" ----is when you hit the fence with the front of the car.
"OVERSTEER" ------is when you hit the fence with the rear of the car.
"HORSEPOWER" ----is how fast you hit the fence.
"TORQUE" -----------is how far you take the fence with you.

I thought the 4.4 TDV8 had a bolted ( 1 way ) bolt that is one use only , the people i know have managed to source the bolts in Germany. So do we have two differing ECU's ?

Chip that goes in line on the fuel rail control wiring etc , all that does is increase fueling and boost and have seen a lot of cars that over boost when these are used including one i tried on a BMW 3.0 DI , it went in the bin i am afraid. They also do not limit the torque to the gearbox that has set limiters for a reason. Far to many gone...

Japseroony wrote:

Gazellio wrote:

Japseroony wrote:

Hi Gaz, how did he do it? ECU off and split or via OBD?

"Ecu has to come off...no other way.....the ecu has the 'read' funtion disabled by Bosch at the factory.

It is a 45 minute job......lid has to come off ecu.....but I have a source of new lids so no trace left of it being opened "

So now we know

No problem with what you have said Gaz but do you have a supply of stickers that are on the ECU as these get damaged when splitting them.

In order to split you have to heat the glue that holds the ECU together and that damages the LR stickers etc.

I think splitting an ECU on a £68k+ car is somewhat dangerous as if LR find out and by looking/driving they will, the warrantey is/could be voided and I for one dont want this so I will wait until the tool manufacturers sort out re-mapping via OBD and offering a switchable version same as the previous versions

Gazellio wrote:

"No 'splitting stickers' as you suggest....as the stickers are on the front of the ecu...."

Sorry to disagree with you Gaz but the stickers are on the lid of the ECU which is the bit you are taking off and not on the body

This means when you heat the lid up it damages the stickers - granted not every time but on most it does. "UNDERSTEER" ----is when you hit the fence with the front of the car.
"OVERSTEER" ------is when you hit the fence with the rear of the car.
"HORSEPOWER" ----is how fast you hit the fence.
"TORQUE" -----------is how far you take the fence with you.

tboner001 wrote:

I thought the 4.4 TDV8 had a bolted ( 1 way ) bolt that is one use only , the people i know have managed to source the bolts in Germany. So do we have two differing ECU's ?

Chip that goes in line on the fuel rail control wiring etc , all that does is increase fueling and boost and have seen a lot of cars that over boost when these are used including one i tried on a BMW 3.0 DI , it went in the bin i am afraid. They also do not limit the torque to the gearbox that has set limiters for a reason.

The bolts are not holding the ECU together they just stop you taking it off the vehicle or are supposed to stop you but they are readily available from LR  "UNDERSTEER" ----is when you hit the fence with the front of the car.
"OVERSTEER" ------is when you hit the fence with the rear of the car.
"HORSEPOWER" ----is how fast you hit the fence.
"TORQUE" -----------is how far you take the fence with you.

Just repeating the answers I am getting from the expert that does it.....

Gazellio wrote:

No issues with checksum....uses same ecu as 3.0 Disco4/RRSport 3.0/Jaguar 3.0 TDV6

I really hope we can get a sort of stealth installation soon  Santorini Black RR Vogue 4.4 TDV8

Trommel wrote:

I read that the issue with tuning via OBD was not knowing the checksum algorithm. It's not ChippedUK (sorry, Viezu) is it?

A few places are listing tunes for the 4.4 now, with widely different torque and BHP figures.

diesel wrote:

Trommel wrote:

I read that the issue with tuning via OBD was not knowing the checksum algorithm. It's not ChippedUK (sorry, Viezu) is it?

A few places are listing tunes for the 4.4 now, with widely different torque and BHP figures.

Hi.
Is there something I should know about Viezu?

I was looking into getting the 4.4 TDV8 re-mapped by them.

Thanks

Andy Brown

BigJ wrote:

Nothing to do with the checksum. It's all down to Tricore processors and cannot be flashed via. OBD.

Trommel wrote:

BigJ wrote:

Nothing to do with the checksum. It's all down to Tricore processors and cannot be flashed via. OBD.

They're protected by RSA signature, end result is the same.