[KingLT1]

Yea but Chrome's high side fuel system is relying more on volume vs pressure. That changes things a bit...so when pressure fluctuates some it doesn't move the injector pulsewidth's around as much. I do agree that there isn't much need to run more then E60. I can run E65 on mine but I keep it E60. The 2650 pullied that large is also a bit easier on the fuel system being it's not hitting as hard. I have seen this first hand tuning 2 different ZL1's with essentially the same mods other then one has standard kong port vs x port. The X port is way easier on the fuel system being it only hits with 7 psi then builds to 12.5-13 where the standard port hits with 12psi and builds to 13.5-14. The standard port requires some messaging on the hit to keep from bleeding the rails dry and allowing the fuel system to catch up.