Good advice on the dyno request. I'll definitely ask. It was through EasternAerospace.com. Any experiences out there? Maybe the chip is a better solution after all, but if like you say the turbo/intercooler are bottlenecks regardless of other components, then no upgrades would be possible. It still strikes me that a larger throttle body forces everything else to step up (to their capacity, anyway) and keep the ratios. The computer certainly could be a critical path (who knows what arbitrary thresholds it keeps).