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RC - 1st Gen (2015-present) Discussion about the new Lexus RC model

RC Steering ECU Upgrade

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Old Feb 10, 2026 | 06:25 AM
  #1  
toshi808's Avatar
toshi808
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1st Gear
 
Joined: Apr 2022
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From: Hawaii
Default RC Steering ECU Upgrade

Hi everyone,

I recently upgraded from a 2008 IS250 to a 2018 RC350. I’ve really been enjoying the RC350, but the only complaint I really have is about the lack of feeling in the steering wheel. When I had the IS250, I swapped in a ISF steering ECU, which might be the reason why I feel the RC350’s is lacking. Are you able to swap a RCF steering ECU into the RC350 like the 2IS with the ISF?
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Old Feb 10, 2026 | 03:01 PM
  #2  
Viperx's Avatar
Viperx
Driver
 
Joined: May 2024
Posts: 92
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From: California
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Dont believe its possible. Try looking into stiffer LCA bushings (the oem RCF LCA bushings are compatible with the rc350), or RR Racing/SuperPro/FIGS. Check your suspension parts to see if anything is worn
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