Testing my IS-F on the dyno after loading on the RR Racing ECU tune. Previous result was 249kw (333hp) and after the RR Racing tune it was 265kw (355hp).

The car has got some basic mods (xforce exhaust, AFE air filter, silicone intake hose) but these were not changed in any way between the dyno runs - only change was the ECU tune.

The tune gave approx 10-12kw (13-16hp) all through the rev range with most of the gains (16kw / 20hp) are above 6,000rpm where the stock tune died off but it keeps making power until redline with the tune.

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