FWIW, several Saturn owners with hot air intakes are reporting ~150F as the highest operating temp before the computer will start screwing with timing. Obviously this will vary from vehicle to vehicle, but just a point of reference.
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Originally Posted by mechman600
You are inspiring me to do the same. I would use a solenoid valve that I could control with a switch in the cabin. That way when I am mountain driving and encounter a massive hill, I switch it to "turbo mountain climb boost mode" to close the valve for a bit more jam.
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For this you would be better off running an intake with two filters and a diverter valve (I think an exhaust cutout would work well for this). That way you can just switch from hot to cold, instead of turning off the hot and waiting for the temps to cool down.
In regards to the IAT out of range... in my car the coolant temp sensor and intake air temp sensor are the same part number
I look forward to more results from Vago. I may have to get some instrumentation (and I am still torn on what to get) so I can test mine. I've only gone through about 1.5 tanks since the install, so no real data yet.