dsms are different from a sr20 in that they are a longer stroke engine. the intake manifold is different, lots of things are different in them. it's hard to compare the two motors.

SR's dont' run 26-28 psi the way dsm's like to. if they did they would make much more power on their turbo setups.

therea re people who make 340-350 whp off of big 28 turbos on SR's. how? 26-28 psi. I would imagine at 28psi a GT2871R on a stock manifold woul dmake some killer power too.