KV6 ECD3 conversion

brockenbauer · 12th June 2019, 03:11

Hi everyone!

I have a 00MY 2.5 V6, which is currently configured as ECD2 car, but I want to convert to ECD3.

There is a "Service Bulletin Emissions" menu in the T4 which says:

"This vehicle can be converted to ECD3 specification. You must ensure that all necessary hardware changes have been made to the vehicle."

The question is: what hardware changes is necessary to the ECD3 conversion for a 00MY KV6?

I have the older NNN000655 ECU.

Thank you for any information!

BigRuss · 12th June 2019, 07:13

The difference between the ECD2 and ECD3 cars is mainly the addition of the downstream Lambda sensor.
Up to VIN 1D208018 there are only two upstream Lambda sensors.

I haven't converted an ECD2 car to ECD3 but I would imagine that it would need a later type cat that will take the sensor, the wiring adding for the downstream sensor and a ZCS coding change that would enable a different software to be applied via T4 for the ECU

Russ

brockenbauer · 13th June 2019, 10:54

Thank you Russ!

12th June 2019, 03:11	#1
brockenbauer Newbie Rover 75 Saloon Join Date: Jan 2017 Location: Debrecen Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	KV6 ECD3 conversion Hi everyone! I have a 00MY 2.5 V6, which is currently configured as ECD2 car, but I want to convert to ECD3. There is a "Service Bulletin Emissions" menu in the T4 which says: "This vehicle can be converted to ECD3 specification. You must ensure that all necessary hardware changes have been made to the vehicle." The question is: what hardware changes is necessary to the ECD3 conversion for a 00MY KV6? I have the older NNN000655 ECU. Thank you for any information!

12th June 2019, 07:13	#2
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	The difference between the ECD2 and ECD3 cars is mainly the addition of the downstream Lambda sensor. Up to VIN 1D208018 there are only two upstream Lambda sensors. I haven't converted an ECD2 car to ECD3 but I would imagine that it would need a later type cat that will take the sensor, the wiring adding for the downstream sensor and a ZCS coding change that would enable a different software to be applied via T4 for the ECU Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

13th June 2019, 10:54	#3
brockenbauer Newbie Rover 75 Saloon Join Date: Jan 2017 Location: Debrecen Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts	Thank you Russ!