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Tegiwa Upgrades Their K22-Powered NSX

Honda NSX with a turbocharged Honda K22 racing at the track

Tegiwa spent the off-season upgrading their “Tsuki” Honda NSX. The race car is still powered by a turbocharged 2.2 L Honda K-series inline-four and Hollinger MF-2WD six-speed sequential transmission. In the off-season Tegiwa upgraded the fuel system to eight injectors. Inside the motor they installed Kelford Stage 1 Turbo camshafts and Kelford Extreme valve springs. On the cooling system they installed a custom PWR radiator which allow the the water/methanol system to be removed and reduce weight. Finally Tegiwa swapped the electronics to a Haltech Nexus R5 ECE with their PDM16 and TCA8. The motor made 682 hp (509 kW) and 482 lb-ft (653 Nm) at 1.5 bar (21.7 psi) of boost.

Honda NSX with a turbocharged Honda K22 on the dyno

Honda NSX with a turbocharged Honda K22 on the dyno

turbocharged Honda K-series in the engine bay of a Honda NSX

turbocharged Honda K-series in the engine bay of a Honda NSX

custom PWR radiator for a NSX with a turbo Honda K22 motor

NSX rear wheels spinning on the dyno

Kelford Stage 1 Turbo camshafts going into a Honda K-series motor

Haltech Nexus R5 ECU controlling a turbocharged Honda K-series motor

Source: Tegiwa

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Tegiwa Upgrades Their K22-Powered NSX

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