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Kathy the MX5

December 12, 2017

Kathy the MX5


Owner Andy Wyatt
Location Sydney Australia
Car Type Mazda MX5 NA 1990 (Miata)
ECU Series 6 RX7 plugin ECU (eSel021)
Application Circuit-only car (“Road race”)
Engine Type: 13B REW (series 6 RX7)
Aspiration TO4ZR Turbo
Boost 21 psi
Fuel System In-tank Deatschwerx 300 lift pump, external custom surge tank, external Bosch 044 fuel pump, Sard fuel pressure regulator. Factory 550cc/min primary injectors, 2000cc/min secondaries with aftermarket fuel rail.
Engine Modifications, Internal Ported by Ric Shaw, Series 4 Rotors, XTreme lightened flywheel / clutch assembly
Engine Modifications, External LS2 ignition coils, custom exhaust manifold with Tial 60mm wastegate
Exhaust 3” with single straight-through muffler
Instrumentation Factory instrument cluster still operational, Race Technology Dash 2 Pro
Other Modifications Yellowspeed 6-piston front calipers with 300mm DBA discs. Factory rear calipers with larger discs. Recaro seat and RPM 5-point harness. Bonds roll cage fitted by Deckspeed. Standard RX7 gearbox. Kaaz 1.5-way 7” MX5 diff. Spax 2-way adjustable coilovers. XXR 17×8.25 wheels. Autokonexion wide body kit.
Tuner Andy Wyatt, on various dynos including Ric Shaw and DVS Tuning
Power 290 kW / 385 hp
Racing Results 1’07 at Wakefield park and 1’42 at Eastern Creek with Ric Shaw driving. Also fastest Rotary in the Snowy Mountains 1000 (2012).


Kathy the MX5 owned by Andy Wyatt

Kathy the MX5 dyno graph

Kathy the MX5 trophy