I've got a turbo charged PA32-260, Rajay STC. I added a engine analyzer to it last year, good investment.
Anyways my question is what is the proper location for the Turbine Inlet Temperature (TIT) gauges? As would be expected, they are located right upstream of the turbine but on this STC install, the exhaust goes to the muffler first, then to the turbines and then out the stack. I rarely see TIT's over 1500, which I assume is good, but my mechanic complained that the manifold appeared to be eroded from the heat of the exhaust. So the combiner and the muffler likely are hotter then the TIT gauge reflects.
All of EI's STC'd install recommendations are that you place the TIT probe at the inlet to the turbo charger one to two inches from the turbo charger flange.
Perhaps I should rephrase, as it was already installed per EI recommendation.
Is your typical turbo charger upstream or downstream of the muffler? I'm concerned my turbo STC is not the norm.
As I understand it, the whole concept of TIT is to protect exhaust components, hence my concern I am cooking my muffler and exhaust system upstream of the turbo/TIT.
No other turbo systems have mufflers. The turbo serves as the muffler in virtually all other planes. Your add-on system is unusual in that Rajay retained the muffler for simplicity of installation. It would work better without it.
