Newer pump runs fine. Performs the same as the older one. We tweaked the AFC on it to match what we had done to the 83 pump and advanced the timing to match. I do watch EGTs, I have my thermocouple placed immediately upstream of the exhaust manifold outlet flange so I am measuring right before where it goes into the turbo. Running down the highway I usually see EGTs in the 600*F-700*F range. On flat ground on the interstate it tends to sit around 900*F. Hottest I have seen it get is about 1250*F, and that is when trying to pass someone going up some of those long grades you'll get. Cools off nice and quick when I get off the throttle though.