Hondata

Ok guys what to do ?

The engine comes with 2 o2 sensor A and B and like we all know you can't jump them together or reverse the wires.

How do I wire up my turbo exhaust manifold with 2 oxygen sensors ?
What are my options ?
-2 o2 sensors in the down pipe ?
-upgrade to a OBD1 ecu with one sensor ?

I can't run closed loop operation.

Any input would be great......
thanks guys
Cam

its a cheesy way to solve your problem but a friend of mine wrapped his in alluminum foil and wire tied it to the cat. but id just weld another bung into the system shouldnt cost more than $25 ($50 canadian)

The only real solution is to make the switch to OBD 1, you'll be glad you did.

THIS has been discussed. and DAVEP is right. OBD-I

Thanks again guys..........
But the BIG PROBLEM HERE IS!!!!!!!!!!!
HONDATA SOLD ME THE 4B ON THE PR3
And it doesn't even work correctly

So now after spending 800-900 usd I have to get another ECU, obd0-obd1 adapter, different distributor, and then the hondata modification

thanks da693 but the problem isn't how to put a second o2 sensor into the down pipe. Its that pr3 has 1 o2 sensor for 2 cylinders

You can put the stage 4 you have now on a OBD 1 ecu it's not that hard to do. Get the OBD 1 plugs from a junk yard and a junk OBD 0 ecu and make the harness yourself.

You can keep using the PR3, but you'll have to run open loop.
Not a big issue if you have the time and tools to tune properly.
I have done it, passed CT emmisions.

You'll need a base map that is set up for open loop as you
cannot 'switch' it in RomEditor.

Procedure:
Export your fuel and ignition tables to a file.
Open the 'open loop' base file and import your tables
Save-As another chip file.
Burn rom with new file.
No More O2 sensor issues, you don't have to run with any if you choose.

Disclaimer: You are on your own as far as your local emmisions laws.

I can send you this base map if you can't get it from Hondata, where
I got it.
Jeffrey_atwood@hotmail.com

Jeffrey Atwood
Hondata Tuner - Connecticut

jeff where are you in CT?? a friend of mine is in bristol and is looking for a knowledgeable tuner!?