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Ah, ok, that is very interesting, and when taken literally I see what you mean, perhaps in my explanation I don't "explain" it properly. In fact it's pretty hard to explain what is heppening with the egt's unless you see it. I'll have to video it next week, but I need to set it up so you can see my rpm as well I suspect.
Where I notice the difference is when accelerating to high speed and I can see by the EGT's where the intercooler starts doing its business. At about 80-90 kms/hr with my foot to the mat the egt's stop rising (or atleast slow down very significantly) and then eventually they start to rise again when approaching the speed of sound (ok - not that fast).
Still not sure if I explain it very well. Where I see the difference and say that I am seeing a 200 degree difference is in that area of acceleration where the egt's stop rising - and where it would have been to 1200 without the intercooler. And it was a very poor way to explain it.
I can see why this is done by calculations on paper to get exacts results as there are many variables when trying to do it on the asphalt.
I'm going to buy those probes and see what mine is doing.
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