2000 S2000 SYSTEM TOO LEAN

CHICKENPARM · Post by **CHICKENPARM** » Wed Mar 02, 2011 6:36 pm

I JUST INSTALLED KPRO TODAY, MECHANICALLY EVERYTHING WENT SMOOTH. I STARTED IT UP AND IT IDLED FOR AN HOUR NO PROBLEMS AT ALL. THEN I LEFT WORK AND THE CE LIGHT CAME ON IMMEDIATLY. SYSTEM TOO LEAN. I GOT HOME AND DATALOGGED AT IDLE AND I NOTICED THAT THE STFT CLIMBED UP AT A STEADY RATE ALL THE WAY UP TO 35 PERCENT AND I ALSO NOTICED THAT THE AIR FUEL WAS GREEN AND STAYED AT A STEADY 14.7?? IM PRETTY FAMILIAR WITH KPRO BECAUSE I USED TO HAVE IT A FEW YEARS BACK AND NOW I HAVE IT AGAIN. IVE NEVER HAD ANY PROBLEMS BEFORE...IM STUMPED. THANKS IN ADVANCE
ROB

EDIT: 2000 S2000 KPRO BONE STOCK OTHERWISE.
I MADE SURE THE USE SECONDARY 02 INPUT WAS CHECKED.
ECU WAS PROVIDED THROUGH HONDATA BRAND NEW
DONT HAVE MY KAL BUT ITS THE STOCK S2000 MAP
THE KAL IS ON MY DELL..THIS IS MY MAC

CHICKENPARM · Post by **CHICKENPARM** » Thu Mar 03, 2011 8:22 am

I JUST BOUGHT WINDOWS PARALLELS SO WHEN I GET HOME TODAY I WILL POST THE KAL AND A DATALOG TO GO ALONG WITH THE POST.

Post by **Spunkster** » Thu Mar 03, 2011 10:47 am

please stop using all caps.

CHICKENPARM · Post by **CHICKENPARM** » Thu Mar 03, 2011 5:13 pm

Closed loop. The RSX ECU will run in closed loop using the S2000 primary oxygen sensor. Due to the RSX ECU normally using a wide band oxygen sensor, in KManager you use select 'Use Secondary Oxygen Sensor for Primary' (don't panic - the ECU is actually running off the S2000 primary oxygen sensor, which has been routed through the RSX ECU as the secondary oxygen sensor).

thats off the hondata site

CHICKENPARM · Post by **CHICKENPARM** » Thu Mar 03, 2011 6:03 pm

hondata k pro version 1.4.5.0
Serial #8940

car is bone stock

please help

system too lean comes on as soon as i move the car, af dosent move. please please help, my turbo kit is coming next week.....

CHICKENPARM · Post by **CHICKENPARM** » Fri Mar 04, 2011 5:26 am

so i just realized that i dont have the newest version, my laptop only downloads 1.4.1.0?? at my work computer i have 1.4.5.0 and it has different options under closed loop. i have the option to enable the secondary o2. is this the problem maybe??

Post by **Spunkster** » Fri Mar 04, 2011 11:39 am

You must let the car warm up. You will not get a AF reading as you do not have a wideband. The S2000 K-Pro only uses the stock narrowband sensor which is input through the secondary o2 input on the ECU.

You can download the most recent beta version of our software from the downloads section of our website.

CHICKENPARM · Post by **CHICKENPARM** » Fri Mar 04, 2011 12:13 pm

so even after the car is warmed up i will not get an a/f reading? How would i tune the a/f if i can't tell what it is. Can you explain what i have to do in order to get an accurate reading of the a/f. i will downlkoad the latest version tonight and see what happens. Thank you for the help

Rob

Post by **Spunkster** » Fri Mar 04, 2011 1:01 pm

You must use an aftermarket wideband, input through the ELD to be able to datalog a wideband signal.

CHICKENPARM · Post by **CHICKENPARM** » Fri Mar 04, 2011 3:06 pm

So I have to buy an oxygen sensor in order to have accurate a/f readings when i datalog then ok. Is there a way to buy a sensor that will "plug and play" with my stock s2000 harness? If there is I'm assuming that i would replace the upstream o2 sensor with the wideband. I dont really want to do any wiring, and id like to keep it as simple as possible. So what im asking is if theres a way to get a/f readings without rewiring anything? Thank you again for taking the time to help me out

**if i have to re-wire would you be able to e mail me a diagram of the wiring**

giordanor821@gmail.com