65beto Posted June 15, 2020 Share Posted June 15, 2020 Hey fellas, I was the owner of an IS250 for many years till an !Removed! ran a stop sign and totaled my baby. Now Im in the market for a RC300 V6 but I know you can tune it to get same power as the RC350. What tuner is the best out there? T.I.A. Lou. Quote Link to comment Share on other sites More sharing options...
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