JustinC

The RSX wideband can read down to 11.5, the other widebands can read down to 10:1. You shouldn't really be running anywhere near 11.5, 12 is usually as rich as people go. Lean cut works really well. If you are NA you usually use a time of 1000ms and 14.2 as the value, it works very fast.

albe

what does the pins look like?

JustinC

the pins are ECU pins, I believe if Hondata charges anything they charge very little for them

S2Timmy

Do you have a list of parts needed to do this (ie. couplers, length of wire, etc.)? I'm trying to decide between going this route or PLX.

0piston

Just follow that diagram above, I picked up everything at the local parts store--they should have everything you need 30 amp automotive relay, connectors, wire etc.. The length is dependant on how you want to run the wiring. the only other thing thing that I may get additional is the RSX 02 extension harness sold from the RSX store.

JustinC

yeah, I use the RSX O2 extension harness and cut off one end and put a 4 pin weather pack connector on the end from the long harness to the RSX extension and then the RSX extension plugs directly into the OEM connector for the O2 sensor.

JustinC

If you wanted the parts list, a rough list is:

10 ft of 4 different colors of wire
ECU pins from hondata
30 AMP automotive relay
RSX extension harness
4 pin weatherpack connector (1 male, 1 female)
6 pin molex connector(1 male, 1 female)
solder iron
10 ft of wire loom to protect wires in engine bay
electrical tape to cover loom
few male and female spade connectors

I think that covers most of the parts needed.

I would recommend you solder every connection, whether it is designed for crimp or not.

drewmob

I'll attempt not to clutter this thread with my ignorance...

I guess I could just use a flat-out explanation of what benefits are gained from this modification...

- Does this modification allow for full-time closed loop operation?
- Do you still run open loop during warm up?
- Does this eliminate the need for tuning fuel trims for FI, or would you still be concerned about detonation from increased heat?

Any other details would be greatly appreciated.

JustinC

No problem. This allows you to run lean protection on the ecu. Which will protect you in the event that you run lean for any reason. It also allows you to run closed loop while driving around. The car will always run in open loop when you initially start the car, but once warmed up it will go back into closed loop.

It obviously allows you to tune with the sensor also, since it is a wideband.

drewmob

So basically you're getting a more precise tune with less likelihood of destroying your motor? This looks like a great addition.