MicaISF

I have read in car mags that MY11 F's have upgraded power steering with better feedback. Anyone know if it is a simple ECU upgrade or are there mechanical parts required along with new ECU? and does the improvement justify the hassle?

Brian@Vossen

Paging lowbuxracer

flipside909

The changes to the 11 IS F suspension includes revised spring rates, revised shock valving and bushings, redesigned front spindles, etc. It's a total package along with the revised power steering characteristics. You are better off getting an 11.

gengar

Which car mags reported this? I must have missed it. I noted in a past post that no car mags I'd seen reported the steering aspect (and concentrated just on the suspension) even though the steering is a huge difference.

And yes, as I mentioned previously it is a huge difference and it is a very good change.

Isfast

iTrader: (13)

Car & Driver

A Thorough Revamp

Still, the IS F had serious potential; its 416-hp V-8 left no doubt about that. But its ride and handling simply didn’t deliver. It would hobbyhorse down uneven pavement and batter occupants in a straight line but roll excessively in corners. For 2011, Lexus addressed these concerns in a big way, changing or retuning every major suspension component. There are softer front springs, stiffer rear springs, larger-diameter anti-roll bars front and rear, stiffer bushings on the rear subframe and rear anti-roll bar, and a new steering knuckle and front lower control arms for reduced unsprung mass. Oh, and the rear camber is tweaked as well. The honking V-8 and the eight-speed automatic carry over unchanged, but a Torsen limited-slip replaces the previously open differential. Engineers also retuned the electric power steering, injecting a dose of much-needed feel.

http://www.caranddriver.com/reviews/...take_road_test

gengar

^ cool, thanks. C+D didn't mention it in their Lightning Lap article. I was starting to think I was the only one who noticed the difference!