S300 Tuning Questions

GooseS2000

SourPatchKid
Hows it going everyone, just got a few newbie questions about tuning a S300. I'm planning on getting a eTune from http://vittuned.com/, I have a wideband in my car but I haven't wired it to my ECU yet (is that necessary? I believe, I am suppose to wire it up to D10 or D14?) Also, I have a cat on, I still have a o2 sensor still hooked up, and 1 is deleted (just a screw that is the same size as the sensor) then after the cat I have my wideband o2 sensor, just wondering if that would make a difference when datalogging/tuning my car when time comes.

Here is my setup

1996 Integra GS-R
USDM ITR Pistons
Crower Stage 2 cams
Stock Injectors
Stock Map Sensors
Skunk2 Pro Intake Manifold
Skunk2 66mm Throttle Body
Blackworks TPS Sensor
Skunk2 Fuel Rail
Password:JDM Intake
Tsudo Headers
Yonaka Catback Exhaust 4.25"

Could anyone give me an idea what numbers i'll be pushing out, if possible?
Thanks!
 

cvcrcr99

New Member
Wideband doesn't have to be connected to the ecu. If you want to be able to see lamda (sp?) on your laptop, then yes it would need to be hooked into the ecu.

You want the wideband before the cat. lol
 

GooseS2000

SourPatchKid
i didnt have enough space for my wideband to get welded before the cat, i could plug it into the cat seeing that i have the delete there still.
 

Muckman

Not a M0derator
Any eTuner will NEED the wideband wired into the Ecu because they are strictly going off of the datalogs. So get that wired into the Ecu. You can wire it into D10, D12, D14, B6. D14 is the best as you should be replacing the stock O2 sensor. And you wont need the secondary O2 sensor.

And you especially need the wideband before the cat. It will not be accurate after the cat.

I would recommend you consider larger injectors. Stock injectors will max out around 200hp and you probably hope to make more than that.
 


GooseS2000

SourPatchKid
Muckman said:
Any eTuner will NEED the wideband wired into the Ecu because they are strictly going off of the datalogs. So get that wired into the Ecu. You can wire it into D10, D12, D14, B6. D14 is the best as you should be replacing the stock O2 sensor. And you wont need the secondary O2 sensor.

And you especially need the wideband before the cat. It will not be accurate after the cat.

I would recommend you consider larger injectors. Stock injectors will max out around 200hp and you probably hope to make more than that.
Click to expand...
thanks for the info!

but yeah, i didnt have any space before my cat to get it welded so would i be fine just plugging the wideband o2 into the cat? sorry for the newbie questions.. :(
 

cvcrcr99

New Member
No. It needs to be before the cat, otherwise it will not read properly /story

Do you have a real cat on there, or a test pipe?
 

95B18BTurbo

New Member
Wideband before the cat without a doubt, and you need to lookup Hondata's recommendation for hooking up the wideband to it. I suggest the D10 ELD wire, and cutting reisistors R136 and R138 on the ECU for accuracy. There are plenty of pictures on the web on how to do this. Then you will have to go into the S300 turn off the ELD, calibrate the offset for the wideband used, and and select D10 for the wideand input.
http://www.hondata.com/forum/viewtopic.php?f=19&t=13960
 


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GooseS2000

SourPatchKid
cvcrcr99 said:
No. It needs to be before the cat, otherwise it will not read properly /story

Do you have a real cat on there, or a test pipe?
Click to expand...
i have a real cat on there. i just didn't have any space before my cat to weld on the wideband o2..
 

GooseS2000

SourPatchKid
Okay, so I got my wideband welded in front of my cat, now I’m going to be wiring it up to D14, I was wondering if I have to do anything else like calibrate my gauge and sensor together before I start data logging to send out to get tuned? Or what else needs to be done?
 

Muckman

Not a M0derator
There is a wideband offset value that can be used if Hondata doesnt match the wideband gauge. Read the help file under the Closed Loop Advanced Parameters.
 

GooseS2000

SourPatchKid
Muckman said:
There is a wideband offset value that can be used if Hondata doesnt match the wideband gauge. Read the help file under the Closed Loop Advanced Parameters.
Click to expand...
yeah, i noticed a different in my gauge when i connected to ECU D14, nothing I should be worried about right? also do i have to do the offset value before i start datalogging or it wont matter, im trying to send out it to my tuner ASAP.
 
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