where to connect a turbo gauge for a good compressor reading ? map sensor hose ? or the pipe on the throttle body that have the rubber on it ? or other
Fitting a T-piece into the fuel pressure regulator vac hose is a popular choice. Its a nice straight run from there though the bulkhead into the dash then(depending where your gauge is).
Don't forget you'll be reading manifold pressure as apposed to a compressor reading, hence you'll see a vacumm once the throttle is closed!
tks