Alright I currently have an 04 ECSB 5.3 2wd with pacesetter Lts, CAI, transgo Hd-2, vette servos and a Nelson 89 octane tune. Im going to get a 93 octane tune and I was just wonder what I can expect as far as power gains? The 89 nelson tune was awesome so Id expect the 93 will be even better