riverrunner06

This is the concept I was leaning towards. I know that stoichiometric target in recent years for new vehicles has been 16:1 and is working well with the new technology of intake and exhaust timing being variable. With the addition of HHO it may or may not be enough. The idea of the EFIE is to add voltage to the output of the O2 sensor to achieve this. that is what I have attempted without favorable results.

I have a SOHC ZC (D16) with I/H/E and chipped that gives me 32-40 mpg and performs very well (dyno test showed 96 HP and 120 Lb/Ft torque @5500 RPM at the wheels in 3rd gear). It's a fun CRX Si.

I would think setting the ratio to 16:1 would be a good starting point. Just what would it take to adjust it? And could it be done "on the fly"? I am not familiar with tuning. What is needed to do this? I do have a couple of lap top pc's that could be used... input please...

typemismatch

I'm learning myself. I have a Hondata s300 in my turbo, but i don't mess with the tuning on it.

I'm going to be learning with chipping and Crome most likely.

What I've learned so far:
Basically most OBD1 Honda ECUs can be chipped.

In order to tune you need:
A chipped ECU
An EPROM emulator [feeds the data from where the chip will go to a laptop while tuning]
Data logger [feeds sensor readings to a laptop]
Laptop
Chip burner
EPROM chips
Wideband O2 sensor

I've found that you can tune the fuel trim safely with just the wideband, but messing with ignition timing means having either a knock sensor or a stethoscope for listening for pinging.

I've found that Moates has most of the pieces I will need, I've found the rest at xenocron.

Xenocron or Moates
Emulator: Ostritch
Data logger: HuLog
Chip burner: Burn2 chip burner
Tuning software: Crome and others
Wideband: AEM UEGO wideband controller gauge or Innovate DB gauge

The way it works as I understand it
Chip ECU
Install wideband [either temporary or permanent]
Install emulator in chip slot
Connect data logger to ECU data log port
Load base map for the motor into emulator
Run car, observe and make changes for idle
-Drive around for a while with data logger
-Analyze data and make changes
-Repeat until happy
When done:
save tune from emulator to .bin file
Remove emulator and logger from ecu
Use chip burner to burn chip
Install chip in ECU
Drive away ...

riverrunner06

typemismatch

Right on dood!
After reading your last post last night, Google brought me to Crome. And this post put a little more light on the subject. Already have downloaded the free program. Starting to read up on the stuff there. Sounds like a blast! I have a D16A8 with ECM that was said to be a screamer as well as my ZC SOHC in my CRX that IS. Some good info to look at and start with. Hey, keep me up on where you are at with your progress and I will do the same... I have some good ideas on HHO cells and tried methods that work. Should you be interested in that area I am willing to share what I know.

typemismatch

I think there is a limitation with the free Crome that you can't connect to a data logger. The Crome Pro license through Moates is only like $150 though, not a bad deal since you only have to buy it once.

I'm not so interested in HHO, its an interesting idea, but not something I'm currently pursuing. I'm interested in learning to program for mileage [Vx hatch] and performance [H2B hatch]. I saw the discussion and noticed no one seemed to be tuning their setups which is a big deal.

I'm always willing to share anything I learn. Just take it all with the caveat that I'm learning, anything I think I know could be dead wrong.

This site has tons of info on Honda ECU chipping and tuning, its a bit ADD but if you're persistent you can figure out what you're looking for:
PGMFI