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View Full Version : ECU Upgrades for D4 2.7L


gavinwibrow
8th October 2020, 12:47 PM
If my memory serves, it was Toombie who mentioned some time ago that there were 3 worthwhile upgrades available for our venerable 2.7L, at $25 each, specifically
ATCM - Terrain Response
TCCM - Transfer Case, and
TCM - Transmission 6 Speed
Anyone know if these are only available via a stealer, or hopefully GapTool, or ?
loanrangie
8th October 2020, 01:29 PM
If my memory serves, it was Toombie who mentioned some time ago that there were 3 worthwhile upgrades available for our venerable 2.7L, at $25 each, specifically
ATCM - Terrain Response
TCCM - Transfer Case, and
TCM - Transmission 6 Speed
Anyone know if these are only available via a stealer, or hopefully GapTool, or ?

available from GAP i believe.
Tombie
8th October 2020, 04:37 PM
Yup... GAP
twr7cx
15th October 2020, 09:26 AM
How do you know if you have these or not? i.e. can I compare my version numbers with the desired version numbers?
loanrangie
15th October 2020, 09:29 AM
How do you know if you have these or not? i.e. can I compare my version numbers with the desired version numbers?

yes you can.
gavinwibrow
15th October 2020, 03:28 PM
yes you can.


So, don't keep us in suspense!
twr7cx
18th October 2020, 04:41 PM
So, don't keep us in suspense!

I connected up the GAP Diagnostic IID Tool. From the Main Menu selected Ecu Infos, let it run it's scan and it advises three options for each of the ECU's - 'Latest Version', 'Update available' or 'No update found'.

Thankfully for mine for the three recommended, ATCM - Terrain Response, TCCM - Transfer Case, and TCM - Transmission 6 Speed, it lists 'Latest version' so I can't comment on updating at all.