Aces IV/93 oct gas using 91 CAI tune. High ST retard with LT

[tim100]

I added Aces IV with 93 octane gas, using the 91 CAI tune (default parameters) and my ST retard is up to 14* along with 1.5* of LT retard. Before using Aces IV I had only 5* of ST retard and no LT. I figured with Aces IV the ST retard would have been gone. Here is the attached log.

Predator part number: U7135
Revision: 9r27
Dodge Charger 2010 R/T AWD

[Mike_Levy]

What is Aces IV? If its an octane booster, get rid of it. The only Booster proven to actually reduce KR is NOS Race Booster (with NitroMethane). All the others either do nothing or add knock. The Hemi is very particular with what it likes.

[jonnyqwest]

ACES IV is supposed to be the fashizzle. LOL. Must be from chargerforums.