Originally posted by john banks
Link ECUs on old shape Impreza turbos do not always have IAT, none of them have charge temperature.
I'm certainly not saying it's impossible or even unlikely! I was just thinking from a perspective of map sharing or "common" maps for similar sets of mods, which seems to be the trend in the WRX community, moreso than individuals hand-mapping their own vehicles.
I had a very nice, consistent MAP-based program running on my Integra turbo via AEM's programmable EMS, but I surely wouldn't have expected it to run even decently on another car with anything but my exact set of equipment (in fact, I swapped a friend's map from the same engine, same turbo, but different intercooler, and it was WAY off according to mr. wideband!). A speed/density system will work just fine on a stock vehicle or any vehicle that has the benefit of a skilled tuner and sufficient time on a dyno or at least a road under controlled circumstances.