65beto 0 Posted June 15, 2020 Report 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 post Share on other sites
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