I've been considering a Z as a candidate for a TT project. After awhile of lurking these forums along with a few others trying to sort out correct information and incorrect information I have a few questions. It seems the Z's engine isn't very FI "friendly". I see alot of mid 400 hp numbers which is decent but not great considering the size of the VQ compared to alot of other popular FI modded cars? And the fact it seems most making anything around 450 have lowered compression and other mods like cams along with a built block. My main question is has anyone hit the 500whp mark with a reliable engine running pump gas? I've seen numbers into the 500's but I'm assuming those were pulled with high octane race gas. Can the VQ not handle much more than 8 psi without having detonation issues on 93 octane? Running those power levels would be the ultimate goal for me but not at the cost of having to drive to the track every time I need to fill the gas tank.