RR Racing Releasing Stage II Tune for Their RR490 Supercharger Kit for Lexus 3XX AWD

We promised last year to release stage 2 tuning for our 3XX supercharger kit for Lexus IS300/350, RC300/350 and GS350 models and we now delivered for the AWD vehicles!

IS350 2014+ AWD Supercharger Kit Dyno Chart

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Improving Knock Learning and Power on Lexus ECU’s

I just thought I would share with you some of our experience with KCLV and some ideas of how to improve it.  For those of you who haven’t heard of it, KCLV stands for “Knock Correction Learn Value.” It is simply a long term ignition correction factor. After you flash your car or reset your ECU, the KCLV goes to 15. Once you start driving the car, particularly doing long pulls at high load, the ECU starts bumping the KCLV up in small incremental steps until some knock is detected.

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