I'm pretty sure my thermocouple is at the rear of the head, the previous owner fitted it but it could still be influenced by the change in air flow in the engine comartment.
Head temps are lower by about 4-5K.
Coolant temps when hill climbing are spiking much, much more slowly than prior and not peaking as high.
The next mod is to block the bleed from the oil cooler back to the expansion tank as per the last of the D2a's.
Things happen slowly on this car, it doesn't get used much and come a day off I'm well and truly over doing tech type stuff.


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