#26823, "RE: how much boost with 91 octane gas" In response to Reply # 4
Word of advice.I'm used to 92 w/ 18 PSI.I went down to Cali and forgot the 91 that was now in my tank.Dang' spark plug looked like a melted candle.Oh,I was driving for about 10 hours straight on the freeway w/ occassional full boost applications before this.I have 8.8:1 comp and no timing retard whatsoever.