Matt's 1989 930-S Slantnose Cabriolet

Engine rebuilt and converted to long-stroke 3.5L using 76.4mm (3.6L) crankshaft, 98mm pistons & cylinder set.

Other internal upgrades include fully prepared cylinder heads, upgraded engine fasteners, Turbo S camshafts.

All other upgrades are usual bolt-on components: stainless headers, large turbo, free-flow muffler, full-width intercooler.

Converted to EFI using our billet EFI Injector Blocks and MoTeC M600 engine management incorporating twin-plug direct-fire ignition and integrated boost mapping.

Another true daily-driver car complete with air conditioning and heat.

Resulting performance, measured at the rear wheels on Dynopack chassis dynamometer:
* 500rwhp/440rwtq at 0.95bar running 91-octane fuel
(over 555hp/490tq at flywheel)
* 595rwhp/515tq at 1.25bar running 100-octane fuel
(over 660hp/570tq at flywheel

Flywheel power estimation using a very conservative 10% factor for drivetrain power loss. Actual loss for G50-series transaxles averages 12-13%.