Buyer Beware!

When RR Racing started tuning Lexus in 2016 (starting with Lexus ISF), there were no commercial tools available. We invested heavily in the effort and testing to develop tuning capabilities. Even then there were “tuner” scam artists who claimed to develop various hardware plug-ins or tunes for Lexus, but their fraud was relatively easy to identify. Today, there are several commercial tools available that are able to write to various Lexus ECUs. As expected, there have been so called “tuners” popping up who have made extravagant claims for their Lexus tuning capabilities. We welcome competition, and we are always on a lookout for technical talent that can supplement our tuning team. Sadly, we mostly encounter “tuners” who at best exaggerate their claims and at worse simply commit fraud. This article gives a few examples of this unfortunate phenomenon to help you identify questionable tuning products.

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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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