Uploaded a new revised ISF ecu tune from Loi. Process took a few minutes using VF Tuner software on windows laptop.

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"Full bolt on exhaust set up “Stage 2” flash tunes now available for ISF/GSF/RCF. GSF/RCF only limited to model year 2015-2016. Stock header “Stage 1” tunes are also available. Fuel types 91ACN/91AKI/93AKI.
Ethanol blends of E30 and E40 are available for ISF. Full E85 single map for RCF/GSF models are available. Ethanol maps have different pricing and are available upon request when meeting certain requirements.
FLEX FUEL capability is NOT supported on Lexus F cars.
Here are the noticeable improvements with a tune with me:
Increase by 40-45ftlb of torque in the midrange. Low end torque available to make the car actually feel like a V8.
Peak horsepower gains of 30-45whp as tested on our Dynojet 424xLC2.
Increase rev limiter
Speed governor removed
Smooth out timing curve
Adjusted WOT air fuel ratios
Adjusted cam angles for intake/exhaust"