hey everyone. just purchased a 1995 integra LS turbo that is in need of some work...would post pics but the body is in real rough shape.

long story short, it has the following

a B18a1 out of a 1990-1993 integra
YS1 tranny
t-70 (equivalent) turbo... looks like is has some stupid logo on the compression houseing then T-70 in big letters.

a huge front mount

45mm? innovation wastegate

440 rc injectors

the guy that i bought it front had ARP main studs put in

ARP rod bolts

new oil pan gasket (still leaking)

9lb flywheel (unknown brand)

new clutch,pressure plate,throw out bearing

new main seal

t3/t4 turbo header

3in turbo back

hondata s300




other supporting mods look like,

alum. rad.

e fan (where these stock?)

fuel pressure gauge

aftermarket FPR mounted on the fuel rail

( i need to check on the fuel pump....but they would have been stupid not to have upgraded it...i cant hear it at all)

an AEM wideband 02 sensor with digital read out


THE QUESTIONS

generally speaking, what is this set up capable of HP wise?

i want to replace the narrow band 02 sensor with the WB as well as sending the 2 extra wires from the WB to the s300 for data logging.....but i dont know what pins to piggy back???? i havent been able to find a really good write up on this specific topic

also, there is a separate bung that i have placed for the WB sensor...can i leave the Narrow band sensor in place??

i read something about taking out resistors when wiring the out going WB wires into the s300 who is an expert on this topic?

it stutters in every day driving but i will assume for now that this is because of the massively rich tune.



also, just so everyone knows, i used to be an rx7 guy so im a bit rusty with lingo-n-such. and i dont really know honda engines.

rx7club.com had always been my saving grace and this forum seems similar in kind.


thanks in advance for your help.and i will continue to search the site for help.
stew

 

spoke to soon


https://honda-tech.com/forums/honda-prelude-4/aem-wideband-wiring-control-hondata-s300-2253898/


"The easy way is just keep your stock one and add the wideband, hook up the power and ground wires, then cut the ELD wire and hook up the blue wire from AEM to it.
Then in Smanager under options and settings, click on D10 ELD, air-fuel and set the voltage conversion as in your AEM manual. Don't forget to disable ELD.
Or just swap your stock O2 for the wideband and hook up the narrowband simulator( forgot what wire that is, probably the white one) to 02 signal wire and keep the blue wire in D10 ELD for datalogging. Just read the manual couple times and you'll be fine."


question

blue wire to replace the ELD....what is d10 ELD?

and where does the white wire go?

 

d10 ELD is the OBD1 ELD system input. It's not being used and it's a good, clean line to tap into and get an accurate signal from your wideband to the ECU. Do a search for OBD1 pinouts so you can find the right wire, and splice your wideband input into the ELD.

You also need to cut two resistors in order to reduce the offset. You should be able to find info on that pretty easily -- I'd tell you but I can't remember off the top of my head which resistors to cut!

What I did was simply replace the stock narrowband with the wideband. There is no reason you need to preserve the narrowband signal, and the wideband controller can emulate it anyways.

 

thanks for the response!

quick q though. should i completely replace it? or just splce it in?

also, do i need to do anything with the white wire at all? or just let it hang?

the manual says " WHITE <Analog Output> Connects to any auxiliary unit that accepts a 0-5 volt input."

thanks again!
stew

 

I would cut the wire and splice your wideband output into it. Leave the other end dangling. If it's not open, you don't want a signal to come through the original ELD wire. So I guess in that sense you're replacing it.

I'm not familiar with the UEGO but it sounds like the white is the wideband out that you want connected to the ELD. What are the different wires?

I would guess you'd at the very least have a wideband (analog) and narrowband (digital) out, a switched power, a ground, and a headlight signal input.

 

did i find the right diagram for the 1993 integra obd1?

http://www.phearable.net/tech/wiring...schematics.gif

D10 is it?


these are the 4 wires that are on the AEM sensor

RED <Power>
Connect to a switched 10-18 volt power source utilizing a 10A fuse.

BLACK <Ground>
Connect to a clean power ground.

*WHITE <Analog Output>
Connects to any auxiliary unit that accepts a 0-5 volt input.

*BLUE <Serial Output>
Connects to a RS-232 com port for hyper-terminal data logging.

 

Seems right to me. So what I would do is pull power from A25 and ground to A23 or A24. Cut D10 and replace it with the white wire. The blue you would connect to a serial cable if you wanted to direct log.