IS 350 Sport-tuned suspension
#17
Understand this to be an older thread however, have been interested in installing the shocks / springs included with the ST / X packages.
After further research, it appears that the springs / shocks are the only different parts. Vehicles (06-2013) equipped with the ST / X / Luxury packages all us the same power steering ECU 89650-53020. Believe the steering ratio is the same as well. Unsure of steering ratios for the following however;
89650-53041 - 2010 - 2012 IS F power steering ECU
89650-53042 - 2013-2014 IS F newest power steering ECU
89650-53082 - 2011 - 2013 IS 350 with sport package. power steering ECU
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