There's a story behind this car. It was tuned by another tuner while I was out for a month. It made 598whp @ 26lbs on VP C16 fuel. Not more than two weeks later two pistons failed from what was believed to be slag from the intercooler piping. Ruined two pistons and the head. I tuned his car (calibration on the AEM EMS couldn't be used) on 93 octane at roughly 21.5lbs. From his text messages he's very happy

YouTube - Rb26 S14 on the dyno on pump gas

Car: Nissan 240

Motor: Built RB26

Fuel: Pump 93

Mods: 8.8:1 compression, ??? valve train, Tomei Type-B camshafts, ??? exhaust manifold, ??? intake manifold, Precision PT6776HPS turbocharger, ??? front mount intercooler, 3" downpipe, 3" exhaust, RC Engineering 1000cc fuel injectors, Walbro 255 in-tank fuel pumps (2), HKS DLI ignition amplifier, Aeromotive fuel pressure regulator and AEM EMS tuned by Alpha

Notes: Boost pressure was 21.5lbs