Back in the spring of '98 I decided to see just what my at the time White/Chrome '87 Limited would run with pure 93 octane on my daily driver street tires and this combo.
85k mile stock short block, ported & polished M&A aluminum heads, port matched intake manifold, stock ported headers, 2.5" SS cross over pipe, TE-45 turbo, Eastern front mount IC, 3" downpipe with deltagate wastegate, 3" single shot exhaust, SSM traction bars, dual rear air bags, no front sway bar, PTE 70mm plenum with Accufab 70mm t-body, 42.5# injectors with a Lubrant street 93 chip, Bosch external pump with no intank, -8 feed line, stock return line, Adjustable regulator, Scanmaster, Direct Scan & a boost gauge. Tires were 295/50/15 Hoosier Quick Times (before they came out with Quick Time Pro)
I drove in off the highway (95 mile one way trip) payed to race, pulled directly into the staging lanes, lowered the tire pressure down to 15psi with the car idling, boost was on 22, fp was at 44psi, ambient temps were 78-80* and made this pass. Didn't have more than 5 minutes of cool down as the lanes were rolling and I wanted to see what the car would run in street mode.
11.97 @ 117 with a 1.79 short time. I was very happy with that. I don't think I made anymore passes that day as I really went just to watch my friends run.
If you build a nice combo with aluminum heads and a front mount, you can get close to running this level of boost on todays reformulated 93 octane, even more on 94 Sunoco. The trick is finding a turbo that is very efficient in the 19-22psi range, which with todays turbos would be the PT61 series or the PT67.
Just my O2's worth.
Patrick