AB, for a fact this BMW you know had a baseline of 180 rwhp without the SIR correct? If this is the case, #1. I don't believe this is a Stickley motor, I know for a fact that his baseline engines are much higher than 180 rwhp with FPR restrictors and without SIR's.
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It was over 180. I'll see if I can get the baseline. Also, and more importantly, comparing hp numbers from diffeerent dyno's is a tricky business. I've seen variation of 5% in stock E46 M3 motors from dyno to dyno. Heck, I've seen a dyno plot that showed a 100% stock E46 M3 making, if you assume a conservative drivetrain loss, 360chp. Obviously it was not....the dyno was just reading a bit high.