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Mazda

RX-8 LS V8 Speedway Car

6.0L LS V8 RWD Stage 3
kW
401→ 413
+12
HP
538→ 554
+16
Nm
555→ 576
+21
Read the full engineering case study
The detailed calibration story behind this dyno result.
Mazda
RX-8
Photo withheld for client privacy
Dyno Chart — digitised from report
Vehicle
Make
Mazda
Model
RX-8
Series
LS V8 Speedway
Engine
6.0L LS V8
Drive
RWD
ECU
Haltech Nexus Rebel LS
Tune
Custom calibration (competition)
Modifications
6.0L LS V8 swap 14:1 compression ported cylinder heads single-plane intake quad 40mm throttle bodies custom camshaft Haltech Nexus Rebel LS
LS V8 RX-8 speedway build — custom-camshaft dyno

A 6.0L LS V8-swapped Mazda RX-8 speedway car calibrated on Haltech Nexus. This dyno compares the engine before and after a custom camshaft (not a stock-to-tuned street result): 401.2 → 413.3 kW and 555 → 576 Nm at the wheels, with the largest gains through the low and mid range. A 14:1 naturally aspirated competition engine — see the full engineering case study.

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Workshop & Dealer Access

Protunes supplies ECU calibration files exclusively to approved workshops, tuners, and dealers throughout Australia. Platform: Haltech Nexus Rebel LS.

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