Excess blowby

[gearhead]

I think the best place for it is pre turbo right before the turbo drill and tap manifold. This way egts are true pre turbo readings. After the turbo is good but because of turbo your temps are between 200 to 300 degrees cooler than pre turbo. Also clamping the probe to the manifold works but i think it takes a little long for true heat to be measured ( just opinion here) on a long hard pull like a mile or so the clamped probe will pick up on it.