So I finally finished converting my car to electronic Power Steering the other day and I made a small DIY for you. Let me just say this is an easy swap and most people are worried about it but after doing it I realized just how easy it is.

This is also an updated version with new Info than erik lozas DIY and this version works for 05 PEOPLE with NO dakota digital box!!!!


First here are all of our parts!

Rack and Pinion
Tie Rod Ends
Brain Box
Wiring Harness
EP3 Brackets



First thing first we need to rip out the Hydraulic Power Steering lines and pump. I already did that as I'm running no P/S



So first lets unbolt the wheels and un bolt the tie rod ends


next for more clearance I took out this lower bar


then unbolted the PS rack from the RSX brackets






Then go inside the car and unbolt the 10mm bolts holding on the ujoint on the steering shaft


Now unbolt the brackets from the frame and rip out the rack and pinion



Now lets compare the RSX and EP3 racks



HERE IS THE NEW INFORMATION~!!!

The inner tie rod ends are the same!! There is no need to swap the entire tie rod assembly like everyone else!!!! Only the outer tie rod ends are different and need swapping! So take a wrench and swap them out!





Here you can see the difference in the rsx and ep3 tie rod ends. The RSX is much thicker going into the strut assembly.


Now lets slap in the new EP3 rack and pinion and bolt it up to the new EP3 Brackets you also needed.





So now you rack is in and it's time to do the wiring... There is not much to it!

 

So first thing I did was go inside the car and run the new wiring harness threw the location of the stock wiring harness. Under the carpet footboard for the gas pedal. Then pulled the wire out into the engine bay and up to the eps rack








Now I mounted my box and plugged it in



But we need power! For this I made a custom plug into the factory plug and ran a power wire out the fender to my fuse box. You can either go to the fuse box like I did or go to the battery like Loza did. I went to the fuse box because I relocated both box and battery and my box was closer!





and here is where I went into the fuse box. I decided to add a inline fuse. I used the power source on the left which is coming straight from the batter. So if you wanted you go also go straight to the battery instead of the fuse box. But for me my fuse box is closer than my battery.



I then cut a small opening for the cable on the lid


Now onto the ECU wiring! You only need to add three wires to the new EPS. Engine RPM, Vehicle Speed, and constant power!

I tapped into the hondata jumper harness using three different colored wires to identify each one!


here I tap into the lines


Blue White goes to pin A18 VSS sensor (vehicle speed sensor located in tranny)
Solid Blue goes to E26 NEP (Engine RPM or Engine Speed Sensor)
Yel goes to pin E9 IGN power (this is IGN to let the BCU know when engine is running)

02-06 ECU diagrams are the same. refer to Hondata for ECU pin out.
http://www.hondata.com/help/kmanager/
Reference > ECU connectors

Connector A (2p)
THICK blue/white is +power for EPS system 60A fused
THICK BLACK is - PG Power ground to chassis

 

Hells yes Spazzy!

 

just don't do this if your car is dumped.....the extra load on the unit from the angles of the tierods will kill your eps, It will start to grown when ever you turn the wheel....a well know problem in the ep3 world

great diy btw

 

^^ Good info!

Spaz I love your writeups, but man some of your MACRO camera shots are blurry and hurt my eyes

Oh for once EP3 > RSX for the EPS hahaha

 

yeah I forget to change the setting on my camera all the time while busy doing installs.... then when i upload the photos Im' like god damnit

 

hay i got a 02 4dr lx with a k20 swap and i need to do this as my ps was deleted. but my car is also lowered, how low can i go without having a problem killing the eps like u said. i dont want to do the swap and then kill it.

 

On ep3's, drops of over 2 inches seem to really shorten the life of the eps. No idea if its the same with a dc5 but I would think it would.

 

thanks

 

This is sick! Like seriously straight up bad ***. I love the feel of the EPS on my EP3. I feel like it keeps my engine bay clean and will help as the car gets older so there aren't leaking power steering lines and crap dirtying up the engine bay.

 

Hi Steve, so what are the differences of having EPS? Site some advantages

 

Not sure who Steve is but I'll chime in


EPS uses no fluids, so no leaks, no worries of a pump going bad, no checking fluids
EPS is quicker and more responsive
EPS Cleans up your engine bay and removes a belt from the engine which in turn will create more HP from less rotational mass drag on the crank.

 

Do one have to do the wiring except power? My race car do not need speed sensitive steering effort. Im fine with one setting all the time, the best would be to be able to adjust it from the dash

 

In a race car application, would it be enough to just run power to the pump from a switch or does it need more signals to operate?

 

bump