Hi guys, i just registered to this forum. :D
With a 68mm pulley 10psi is too low even with a cam. You should be getting around 14 especially since its been rebuilt. What profile is your cam??
The ISV issue is interesting, it seems like European G60's vent boost through this as it is a code built into the map. Basically under WOT as the boost reaches 1 bar, the isv opens and vents 0.2 bar. I've seen this on the rollers. If your aftermarket chip is based on the factory map then you'll retain this effect.
The US G60's do not seem to have this problem, however both models could lose boost through an old ISV anyway. :cry:
G60jet posted that putting your foot down progressively makes it feel faster. This is due to Digifant Lag :( that you all get. If you floor it instantly, the fuelling with cycle rich-lean-rich etc for a second before hitting the map value (fit an A/F guage and have a look) . The only way to eliminate this lag is through SNS No Lag © Chips 8) .