I am presently completing tuning with the X37, turbo smart, 2JR, catted DP, 3" Injen, and on E30. I utilize Virtual Dyno and as a means for comparison only, and on my 1st revision since installing the 2JR I am seeing roughly 20 lbs more peak wheel torque and 11 more peak wheel horsepower.
Outside ambient temps are currently ideal and in the high 40 F range, and originally when I installed/tuned and datalogged the temps were Houston Summer "lows" of near 87F.
Once I settle my tune with the 2JR, I will visit a real Dyno Dynamics Dynometer in Houston to see what it has to say. I bring this up only because so much back and forth in this thread, with most (like myself) appearing to be interested in a 260-280 whp inexpensive and reliable turbo option.
Virtual Dyno and with my current setup has me past that (292/296 as of yesterday), and on 215-40-17's and 17x7.5" wheels I can't hit full boost in 2cd gear without obliterating traction. In 3rd gear and once I hit 5k rpms my tires can be felt slipping a little, and I ran a FBO/tune Focus ST the other night and walked him.
My goals are simple, and if this isn't "quick" for a car that I bough new for $18,300 plus TT&L then I don't know quick. One day and when I decide to move beyond my current level, I will be contacting DHM for an engine build plus big turbo package. For now, my car is the tits IMO