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Discussion Starter #1
For you guys/gals who live in Los Angeles area, call Lexus of Westminster (714-373-3813) and get the ECU/TRAC reprogrammed/replaced (if your IS VIN falls in the range). You may need to wait a few weeks for the parts, but it is worth it. Hesitation at low speed is gone and the TRAC does not kick in all that often any more. On the repair ticket it stated "To improve throtle responce and 5-2 downshift time, performed TSB (?), reprogram engine ECU and R&R TRAC ECU".

hope this help.
 
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