Thread: D4 3.0l TDV6 monitoring EGTs

Not sure if it helps, but i can monitor EGT's on my SDV6 using the BT IIDTool.

Towing my 2.3t caravan my EGT is around 475. Much less with car alone unless working hard on a steep hill. All monitored on GAP IID.

Try to check it when towing because everything runs much hotter and that is when you don't want your EGT to go any higher due to a higher state of tune I think.

Originally Posted by TuffRR

Not sure if it helps, but i can monitor EGT's on my SDV6 using the BT IIDTool.

Can this be done on the D4 2.7,does anyone know?

I have the Gap tool,but haven't seen the EGT temps using it.

Mine is BT,i use it on my iPad.

Originally Posted by BobD

Towing my 2.3t caravan my EGT is around 475. Much less with car alone unless working hard on a steep hill. All monitored on GAP IID.

Try to check it when towing because everything runs much hotter and that is when you don't want your EGT to go any higher due to a higher state of tune I think.

Just remember the EGT probes are AFTER the turbo on each side - this means that "actual" EGTs are actually much higher. The ECU takes this into account

Originally Posted by Grentarc

Just remember the EGT probes are AFTER the turbo on each side - this means that "actual" EGTs are actually much higher. The ECU takes this into account

Yep, thanks for the heads up pn where they are located. I want to monitor them now for a while before I commit to a retune. My stipulation will be that they cannot rise with the retune.

I wonder if the higher power SDV6 runs higher EGT than a TDV6?

Last January returning from Renmark (SA) to Mildura at 40C towing 2.8t caravan at around 110 km/h i record very scary high temperatures, compare to normal easy driving.
Oil temperature is gear box oil




.Screenshot_20170107-190947.jpgScreenshot_20170810-201238.jpg

Originally Posted by Grentarc

Just remember the EGT probes are AFTER the turbo on each side - this means that "actual" EGTs are actually much higher. The ECU takes this into account

Originally Posted by dalil

Last January returning from Renmark (SA) to Mildura at 40C towing 2.8t caravan at around 110 km/h i record very scary high temperatures, compare to normal easy driving.
Oil temperature is gear box oil




.Screenshot_20170107-190947.jpgScreenshot_20170810-201238.jpg

Just trying to get my head around EGT's,,
before turbo is better,, right?
so if the ECU takes this into account what does Dalil's 380 mean?
[apart from its not as scarey as Grentarc's number ]
the ECU takes this number and adds X amount?
and neither of these are anything like D2/Isuzu numbers,,

Originally Posted by Pedro_The_Swift

Just trying to get my head around EGT's,,
before turbo is better,, right?
so if the ECU takes this into account what does Dalil's 380 mean?
[apart from its not as scarey as Grentarc's number ]
the ECU takes this number and adds X amount?
and neither of these are anything like D2/Isuzu numbers,,

Measuring EGT before the turbo gives a better representation of EGT in the cylinders. From memory there can be 150+ degrees temp drop through the turbo. This makes it impossible to compare EGT readings between vehicles with sensors in different locations (ie pre & post turbo).

With a D2 the usual position to mount the sensor was pre turbo, so the actual EGT numbers will be higher than a D4 which has its sensor post turbo.

I was more interested in the huge difference in EGT between banks 1 & 2 (130 vs 595 deg)???

Chris