| and also on larger turbos (700s), why is it that on 2 cars that I have seen with 530BB turbos, it doesn't appear that the larger IC piping makes that much of a difference? I have over-layed my VP109 chart versus another local car which you tuned this spring. Blue is the stock sized pipes and red is mine with the larger pipes. Doesn't appear to be any difference. Both of us have head work, 500 cams, etc. 
What's even more interesting is when you start comparing my chart with Rob's. Rob is running 400+ cams, where I am running 500 cams. Down low, it appears the 400+ cams really help a heck of a lot with spool up. I believe that I make a lot more up top because of more head work, larger valves and 500 cams (VP109 chart): 
Really interested to hear your thoughts on this. Thanks!
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