Octane Troubles

[04svtdriver]

I've got a question and I'm sure someone could answer it. I've got an 04 Snake that has Pulley, CAI, MAF, Xpipe, CB, It was tuned using 93 Octane. I bought this snake on the east coast and then moved back to ND. It seems that 93 Octane is unheard of up there. I can find 91 and 92 and I've been filling up on 92 and then adding OCTANE BOOSTER. Is this safe or should I get my car retuned through a mail order tuner for 91 and just suck up the loss of a few ponies in the interest of my Snakes longevity? Thanks in advance.

 

[fuel]

you should be ok with just one point difference

 

[racebronco2]

you should be ok, but you could always retard the timing 1 or 2 degrees. i was running 2lb lower and a 2.80 upper on a ported bolwer and timing was 21 degrees(497hp/503tq). with a stock lower and a 2.80 upper i was at 23 degrees. both combo's were on 91 octane.