Finally was able to get the car on the dyno this morning. The baseline was performed with the aFe Intake installed as I didn't want to waste time/money putting the stock on and off. The car delivered very well with just the intake alone. Looks like the torque numbers were higher than expected when compared to the another. My tuner said the 295.57 HP and 327.08 Torque is the highest stock numbers he has seen on his dyno for any stock N55 motor including a 1M that he dyno'd. That tells me we are getting a bit more power than BMW is letting on
With the JB4 Stage 1 installed we see gains in both HP and Torque, but to be honest not what I was expecting from the BMS suggested gains posted on the website. The best was 323.15 HP and 365.67 Torque. A peak gain of +27.58 HP and +38.55 Torque. That said, for less than $400 and two easy connections to insert it still is a good deal for this car. I hope the JB4 Stage 2 running Map 1 puts out better number with the added controls.
