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I have spoken with a number of tuners - Scott at Zshack, Seb at SZ, the local guy (John Kerr) that will be tuning the car, as well as listening to comments from the community. That said, I'll reach out to Harry - he's one I have not spoken to. I've made my decisions after reviewing everthing I've discussed with these guys. I mistakenly spoke about assuming ethanol content. After posting, I realized it was misleading, since the ECU will adjust fueling based on all the sensor input. Please disregard that comment :D Also, I've updated my profile with the latest items recieved or en route. Key components I have sitting on my bench are the wideband controller w/ O2 sensors, ethanol content sensor, dual intake parts, injectors (loaded in rails) and boost control solenoid. The ECU and fuel pump are due to arrive shortly. I have the Haltech NSP software installed on my laptop with a base map for the Z loaded. Of course, it's just that and will only serve as a starting point - the short-term goal is to get everything installed and get the car running. All that said, I will not be going balls-out without a proper tune. When I do get the car tuned, I won't be maxing out hp - the target will be 500whp. Throught all the consultation, that's seen as a fairly reliable place to be. While you CAN get upwards of 600whp on the OEM turbos, the ring lands on the pistons tend to fail. I know the rods can/will also fail, but it seems like it's actually the pistons that are the weaker link. A piston and rod upgrade will be part of another phase of work. Following Tim's recommendation, I'll plan on starting at 15 psi. That really does seem like the safest thing to do. Being close to the "pump gas" limit for OEM engine/turbos, it should be quite safe on flex fuel. Once again, thanks for all of your input! I really appreciate the feedback. I'll try to document the work... we'll see how that goes.
- Aaron 
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