An associate of mine in the Re Map business has just completed his first 4.4 TDV8 with great success and none of the rumoured problems.

0-60 increase by 1 second to 7.5 seconds....

Does he still have to remove the ECU? Used to have:
2005 FFRR 4.4 Vogue - BRC LPG Conversion & Remapped

Now have:
2008 SSRR 3.6 TDV8 - HSE and plenty of toys

What numbers are they claiming?

How much?

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

Will find out method & numbers its about £400 I think and he will come to you....

Gazellio wrote:

An associate of mine in the Re Map business has just completed his first 4.4 TDV8 with great success and none of the rumoured problems.

0-60 increase by 1 second to 7.5 seconds....

Surely, the 0-60 should decrease?

Increase in speed but decrease in time......

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

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.

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.

No its a small company called "DieselTune"

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

0-60 is standard at 7.5 secs on the 4.4 TDV8 ? was 8.5 on the old 3.6

I have driven a remapped 4.4 TDV8 with a GPS vbox in it and recorded a time of 6.7 secs with ease off the line and a full 1.3 secs faster 30-60 than the 5.0 Petrol which is impressive to say the least, it has been mapped now since November 2010 and has had no issues.

I am still waiting for the obd port to be cracked the BMW M3 which has a similar pin system has just been cracked so the Bosch ECU on the newer Range Rovers will follow soon i hope  Far to many gone...

these guys now have the 4.4TDV8 on their site

http://www.chipexpress.com/products/3033/

... i have one fitted to my X5 and it was fitted, by me, in less than 10 mins as it just plugs n plays. The difference in torque on the X5 is instantly noticable and its just a whole lot better to drive. I can't say i have noticed economy improve over the 6 months or so i have had it fitted, but the car drives smoothly and i forget its even there now.

That is not a remap just a chip that fools the ecu and is generic not a tailored map to the car, been there done it never again. Far to many gone...

tboner001 wrote:

That is not a remap just a chip that fools the ecu and is generic not a tailored map to the car, been there done it never again.