The Lexus IS F is something of an enigma - at once an entry-level luxury sedan and a performance beast, offering legitimate power figures but hampered somewhat by its automatic transmission.
Another of the problems those that ply their IS Fs on the track may have bumped into is the speed limiter - set at an already lofty 170mph (273km/h). That's no longer a concern thanks to the Japanese tuners at HKS.
Read Article