ISF4life

iTrader: (30)

Here is the damper and how to take it out or install from Sewell.
http://is.sewellparts.com/accessorie...2008/2123.html

Rossi

iTrader: (4)

I don't want to remove the damper, I would prefer heavier steering over the increased vibration.
That is just me.

Rossi

iTrader: (4)

Has anyone changed the steering ECU on the early isf?
Feedback,process,cost?

projectdna

iTrader: (56)

i've found ISx50 and IS-F steering ECU's on various websites for ~$500.

shouldn't be a hard DIY, since it's a PnP affair, and the steering ECU can be easily accessed as it sits right below the battery tray - in the ISx50.

(it should be in the same location in the IS-F as it is in the ISx50...)

Nameless1

iTrader: (3)

I'm almost certain that a weight in the center of the wheel isn't increasing the resistance of turning the steering wheel. The weight of the steering wheel doesn't bother me, I just wanted input from other ISF drivers to confirm that my power steering is or is not operating properly.

wiredGS400

I had a WRX in the past. My wife has an RX now. The ISF steeing is "heavier". It is most likely normal. As mentioned, if there was an issue with the system, it would most likely be a complete failure, and you would not be able to turn the wheel when stopped. If you can turn the wheel when the car is stopped, you have power steering. My "race car" (I say it in quotes since it is a Lemons race car) had no Power steering for one race. Trust me, YOU KNOW when there is no PS.

However, if you are worried, a quick trip to the dealer will probably take 10 minutes for the service tech or writer to sit in the car and turn the wheel and tell you it is normal or not.

lobuxracer

iTrader: (2)

I had a 2006 IS350. The wife loved it. I bought a 2008 IS-F. The wife hates the steering and has complained about how heavy it is from day one. I intend to swap the steering ECU for a later model as everyone who has driven both the '08/'09 and the '11 or later Fs says the steering is much improved. One member on this forum said the steering on the '11 model felt like his Porsche and that Lexus had finally "got it right" with the newer ECU.

ISFPOWER

iTrader: (20)

maybe im the only one that likes a heavier feel in the steering? i like that solid feel.

Weapon F

Nameless, I went from 08' ISx50 to 11' ISF and yes there is more resistance or heavy feel from ISx50 to F which necessary considering you went from quick touring car to track ready fast sport sedan. If you ever drive F at high speed you will then appreciate the steer feel vs light no feed back steer of ISx50 which I always hated. You will get use to steer feel very quickly and won't even notice in time.

darkoozy

The heavier steering is natural in the ISF, especially with the sport mode enabled.

I came from an IS350 and it was lighter, less stiff and easier to handle. The stiffer response is typical of a heavier, high performance vehicle to allow for tighter handling and road response.

I am not sure removing the dampener will help much.

ISF4life

iTrader: (30)

Changed to flat bottom carbon fiber steering that maybe that what u r looking for

Rossi

iTrader: (4)

When are intending to swap the ECU?
I am definetly interested to hear the feedback from you.

ISF001

We are talking about two different animals here. The steering is fine and supposed to be heavy.

IS and ISF are two drastically different machines. With the exception of some of the cosmetics, there is little in common with the IS. The ISF is to an IS what the M3 is to a 3.

Enjoy the differences--there are many.

http://pressroom.lexus.com/releases/...edan+aug12.htm

Rossi

iTrader: (4)

Has anyone upgraded the ECU on isf?

I found the part on the Sewell site....$443.81

http://is.sewellparts.com/accessorie...2011/5645.html

Nameless1

iTrader: (3)

Interested to know as well. Not sure if it's worth that much money to me though. I do love the flat bottom steering wheel that they show in their video. I had a flat bottom steering wheel on my STi and it was hands down the best mod I did since I felt it 100 percent of the time.