I had PSI do my tune on 6-17-14. It's a great shop and I am extremely happy with the results. Jason spent about 2 hours on my car and did about 10 pulls. I came in at 297 whp with the mods listed in my signature. Left with 324 whp and 262 tq. It felt like 50 whp more. Much better throttle response, better smoother idle, and way more power under the curve. I highly recommend PSI. Ran me $600 for baseline, loaded Uprev, then about 10 pulls to dial things in. Jason knows what he's doing and he was great at explaining everything he did. Here's my sheet from the day.
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Berk HFC & CBE, Stillen G3, UpRev & tune by PSI, GTMat, 3M, Swift, StopTech, H&R 20/25, GT-R,
324 whp & 262 torque