Hi I have read that the r33 gts25t powersteering works with the hicas. If the hicas ecu in the boot is removed the steering will get heavy? Will a s14 steering rack solve this problem or how can it be fixed?
There is 1 solenoid on the skyline rack with 2 wires, feed one wire 12 volts and the other to earth and the steering will be light (2 stage rack)
Digging this thread up from the past... The above quote is exactly what i was looking for.... but i have one more question. I dont want the variable speed steering any more (forget the rear wheel steer for a sec), and personally i think that by running 12v's to the rack solenoid and getting "full light steering" all the time is a little bit overkill for what i want. I was thinking about fitting a 12v to 9v step down convertor before the solenoid: DC/DC Converter 12V Step down to 9.0V 3A 15W Power Supply - UK SELLER - #A-767 | eBay And that way... in my head anyways i would get 75% light steering. Just wanted a second opinion before i do it. Cheers!
With it being 12V sounds like an on/off, either heavy/light? Would be interesting if you could play with it via voltages though.
Got ya. I just figured it would be a multi stage solenoid.... like a boost controller for example. Looks like only one way to find out then lol!
Boost control solenoids don't work like that, they have a duty cycle which you adjust and the controller opens and closes the solenoid (you will hear the clicking noise if you listen to it) so that's it's open/closed for a percentage of time. Duty cycle 0% - solenoid closed all the time Duty cycle 50% - solenoid open for 50% of the time, closed for 50% of the time Duty cycle 100% - solenoid open 100% of the time So the controller doesn't feed a variable voltage to the solenoid, and the solenoid only has two states, open or closed. Works for boost control, don't know if it would work for PS or if you'd get a horrible variation in steering feel.
Thanks for that mate. Good info there. With that in mind, i reckon there are only two options... 1). Just feed the solenoid with a constant 12V's and switch it so that i decide when i want light or heavy steering. 2). Remove the solenoid alltogether and fit a plug instead with the hope that the more i screw in the plug the heavier the steering gets and just adjust it to achieve exactly what i want. Out of interest, has anyone ever done this to a skyline rack?
An S14 rack will be just a tad more expensive than ZERO! Bit more hassle too! I know what your saying.... but the point is to keep the speed sensitive steering, just once it works the way "I" want it to. S14 rack = hassle and no speed sensitive steering what so ever...
Well it's only going to be speed sensitive if you make a control unit for it to adjust assistance based on your vehicle speed, it's not speed sensitive if you're toggling it on and off via a switch or you permanently jam the solenoid so far open. Or just leave the hicas ecu in place to do it's job. It does it's job perfectly well so long as the speed signal is correct.
