Not making excuses. But from my experience, boost comes on earlier on the street because the motor is actually under more load. That could account for the 20psi by 4400rpms on the dyno vs. others STREET logged 4100-4200 threshold for that boost number. And also, can't remember your setup, but a ball and spring MBC which several others use can make a significant difference.
Still cant complain about +325ft-lbs of torque before 5000rpms with a bolton turbo at 26psi at that same rpm. Considering your uber conservative timing for your CR and e-85, it would be nice to see you push it a little farther before you sell it
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Matt
Bolton Holset H1C w/ external gate, fp2X cams, DSMLink, 3" exhaust, FMIC, water injection
"There is nothing better for man than to eat, drink, and see good for all his hard work." Solomon