IS F (2008-2014) Discussion topics related to the IS F model

2009 Need to soften ride

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Old 02-17-18, 06:55 PM
  #16  
UCrazyKid
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Weapon F, I can appreciate your experience but it is hardly apples to apples to compare all stock to your car with USRS and poly bushings front and rear and swift springs as all those other bits (particularly the poly bushings) will add NVH.
Old 02-17-18, 10:25 PM
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Weapon F
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Originally Posted by UCrazyKid
Weapon F, I can appreciate your experience but it is hardly apples to apples to compare all stock to your car with USRS and poly bushings front and rear and swift springs as all those other bits (particularly the poly bushings) will add NVH.
That is why prefecit my statement by indicating right off bat that I did have additional NVH from add urethane bushings, LCA, swift spings. I recognize the fact that I would always have degree of NVH. The biggest addition of NVH was install of swift springs. Thats why I removed them within week.

I added Blistien B6 first they have different damping compared to OEM. Then 2 weeks later Once I got swift springs and bushing I added them. After adding swift, i decided to go back with stock springs a week later due to increase in NVH. My main concern was the way car handled over undulating roads which has more to do with damping and rebound than bushing. NVH is only issue over bad road conditions. This coming from first hand experience of B6 being installed on my ISF. Now there was difference between the way car rode with OEM and USRS and B6 with USRS. I also stated that suspension has settle down ovet last two months.

And I still stand by my statement by just adding B6 shock alone may not necessarily have the big Improvement that you think considering that was just one of suspension component that Lexus changed on the 08,09 and 10. He seems to be looking for more of compliant ride than current OEM setup. I don't know if B6 alone will give him what he's looking for. I find that B6 give slightly firm ride then my 11 ISF did.
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