theoretically it can be programmed to tune out unwanted motions such as bumpsteer, tramlining and torque steer.

it depends on the design and the tuning. as stated above, if taken too far the system can tune out all steering feel, and it can also overboost the steering and the steering would feel super light at all speeds. good for the geriatric population, but not for enthusiasts..

LF-A!!! which bodes well for the FT imo...

another plus for EPS is that you can change this with a simple software update! of course toyota would probably never do this, but theoretically if you crack the ecu you can do it yourself with tuning software. even so i doubt anybody would be crazy enough to mess around with that but the point remains that changes can be easily done with software and not hardware.

You read my mind.

When I had the Supra, we did a rather complicated power-steering delete (needed a specialized bracket made for the alternator to re-tension the now totally different belt). It is heaven when driving. Hell when parking.

So I was looking into a 12V DC hydraulic pump that could be attached to the original rack to power it with a switch (instead of silly speed-sensitive crap). This would take back some of the weight savings, but make everyday life easier. But it seemed complicated, and wasn't my daily so I decided to live with it.

Can any MR2 guys tell me if the SW20 used an electric pump for their steering?

(What I'm talking about is I think what they call electro-hydraulic steering.)


If the FT86 can use a pure electric that feels as good as no-power but with a parking boost toggle, that would be awesome.

The problem with electro-hydraulic is it's adding a lot of complexity for a relatively small improvement. Electric steering uses energy only when it needs it, hydraulic always needs the system to be pressurized and most of the time you don't need this. It makes more sense on something like the Mclaren MP4-12C, where it has fully active suspension which is hydraulically powered, so they just used it to power the steering as well.

I used the MR2 electric power steering pump on my rx7, and it worked fine. Like my factory system, it was RPM sensitive. So i think the pump would stop working at speeds over 20mph.

What i liked about it was the fact that it took strain off the engine via belts. and it allowed me to use a gilmer pully system while retaining PS.

But eventually i went with a manual steering rack soon as i scored a quick ratio manual steering rack for my car.

Id go back to power steering if i get a larger wheel width over 8.5 or any bigger than 255.

Any of you who have tried to turn a car with a +275 width tire on a manual rack would know what im talking about...its virtually impossible even for a body builder.

XT6 has electric power steering pump. There are a few problems like the comuntator wearing out I think? I never had that problem on any of mine.

Every review I've read about a new model with EPS replacing an old one with HPS says the new model has inferior steering feel.

The S2000 has EPS and (after lack of low end torque) that car's biggest criticism is numb steering/bad steering feedback.

Give me HPS any day of the week. Better feel.