I recently did some testing of C16 vs 93 octane on a 04 Cobra with light modifications. In the process of tuning I pushed the car to make max torque on both 93 octane and then on C16. Had some interesting results on this mild combo so I figured it would be a good topic for discussion. This isn't a pushrod motor but the same principals apply to our 5.0 motors. Give it a read if you aren't afraid to learn a bit. 
Race Gas: A Study at the Edge... Part 1
Race Gas: A Study at the Edge... Part 2
Check it out and let me know what you think!
Wes

Race Gas: A Study at the Edge... Part 1
Race Gas: A Study at the Edge... Part 2
Check it out and let me know what you think!
Wes
