thats not bad but dont go off the boost assumptions its showing. its going to be more progressive than that. you probably wont see 10psi till 2-2500rpm based on the map.
the left side of the map is the "surge" area where if you DO get the turbo to somehow start to spool, the car will actually chug and make the car surge back and forth as the compressor will start sneezing air back out. basically, there isnt enough leverage on the exhaust side to keep the turbo spinning and hold the boost it made in the charge pipe so it comes back out. real hard on turbo bearings. generally this is only a problem on vane style turbos where you can clamp the vanes too much, exhaust chokes up behind the vanes, boost comes up but the flow to the turbine isnt enough and causes it to surge and sneeze boost back out. in your case, its more like the lag you will see in the turbo.
imho, you are too far to the left of the turbo map (too big). the 62/80 is a better turbo but still wrong. you are also expecting 40lbs/min which is FAR too much for the hp you are after. stock turbo is putting out 9 at 90hp. 10hp per 1 lbs/min is a good rule to go off here. So cutting your boost expectancy on the matchbot to 25psi max and adjusting the boost numbers puts the 62/80 in a better area but still too big
now a garrett GTX2860r, waaaaay better suited turbo. you need to be down in the 40's and maybe low 50's compressor inducer size
