has anyone mapped thier exhaust side going into the turbine?

if so, what did you use for map sensor nad how didyou set it up.

what was your findings too when compared to compressor side?

ty
dean

 

i have done it, i just used a gm 3bar mapsensor, i had a 10" long brakeline from the collector so it could lose som heat, then a vacum line to the mapsensor.
the backpressure was lower the the boost until 7500rpm, then the backpressure got higher than the boost.
i have a 57trim, ramhorn and boosting 20 psi (b16)