I am thrashing to get ready for a local end of the season drag event this weekend. I am determined to run into the 12's all weekend so I picked up a set of ET streets, 60# injectors and re-geared my trans to 3.29's. I set up the car for E85 and just got my 3.1 pulley from ZZP today. I uploaded my stock timing map to start with and bolted on the 3.1 and shorter belt. My problem is that going from my 3.4" to the 3.1" I only gained 1psi. On the 3.4 DDing all summer it has consistently run 9psi on my boost gauge verified by my MAP sensor at 162kpa. With the 3.1 the gauge shows a needle width under 10 and my MAP shows 170kpa or 10.1psi. I was expecting somewhere in the 11.5-12psi range so where did I go wrong? Is the stock TB a restriction in this range? Should I really only see 1 psi from 3 tenths on the pulley size? I always heard it was around 1 psi/.1". I was afraid the I wasnt going to be able to run the 3.1 with stock timing and 0kr but now I wish I had went with a 2.9" or something. If this is normal I guess it is time to crank the timing back up