I'm currently selling my Kia Forte Koup with the intention to take that money, turn around and buy a Genesis Coupe (or S197 Mustang if I can find one, which I probably can't).
The Forte has electric power steering and I thought I was going to hate it. In some ways, I was right. It can be a little numb and it's definitely too light at low speeds. That said, the feel is more consistent than most hydraulic setups I've tried and my car is a 2010, so I'd assume the newer systems are even better. I also like the fact that it's lightweight and considerably cleans up the engine bay.
Which brings me to the Genesis Coupe. I took some rough dimensions and checked a few angles and it looks like I could fit the electric steering rack from a Genesis G70 or Kia Stinger into the hole the Gen Coupe's hydraulic rack would normally go without fiddling with the stock steering column.
Does anyone know where I could go to figure out how those systems are programmed? If they work on "failsafe" mode like the Prius stuff? If they work WELL on failsafe mode?
This is looking almost self-contained ... I see an angle/torque sensor in the input shaft and a motor on the rack. I'm guessing there's a CAN function for vehicle speed? Or maybe just a wire.
Most electric racks require power from the battery, CAN and power from the ignition switch. If you eliminate the CAN the rack will still work, but will default to overboost.
The CAN data provides the rack with vehicle speed info and that is what controls the boost.
I used to work as a development engineer at one of the major tier one suppliers for EPS systems. Some of the early systems were swappable (the stuff commonly used in kit and race cars - saturn, etc) but the newer ones are heavily integrated into the car's control modules and likely wouldn't even power on. Most of the signals do come over CAN, but they're using much more than vehicle speed these days. There are ways around this, but you need access to the EPS controller's software and a way to modify the inputs and outputs... most OEMs don't even get that detail, as it is handled by the suppliers.
In reply to collinskl1 :
Would it be feasible to pull the CAN out of a Stinger/G70 and tell it that I'm always driving 35 mph in sport mode? Sorry if this is a dumb question but this is not my area of expertise.
In reply to DaewooOfDeath :
No, you can't pull the CAN... it is the computer network in the vehicle that connects most/all the major vehicle components. You may be able to make a module that will translate information on the CANBUS into what the EPS needs. The signals already on the CANBUS *might* run the EPS as is... if they were consistent with their addressing.
Better off sticking to racks/columns that have aftermarket controllers like this example, Ford Fiesta
https://www.ebay.com/itm/AUTOMATIC-Ford-Fiesta-Kit-Electric-power-steering-controller-box-/143595491862
From what I've heard the self centering force is tricky with these, and the force provided is just tuned through gain only. There are more expensive solutions out there like these which offer far more control, not very GRM budget though
https://racespeconline.com/products/dce-epas-pro-street-system?variant=12226900590635
triumph7 said:
In reply to DaewooOfDeath :
The signals already on the CANBUS *might* run the EPS as is... if they were consistent with their addressing.
Automakers "seem" to be backwards compatible with that. I'd wonder if the power steering controller is read-only or if it sends data out on the network, which might make other modules on the network unhappy.
Well, one way to find out!
Huh. I have nothing to contribute to the discussion other than I also own a Forte Koup. Mine is a 2010 EX (2.0L) but has the 5 speed manual.
Do you have any sweet KDM parts on it? I put a Cerato badge on mine to confuse people haha.
In reply to Pete. (l33t FS) :
Probably read only unless it sends out steering angle. If it sends anything maybe just error codes.
