Hondata

i have a full race exhaust with no cat and want to know if i should disable o2 sensor or wait till it throws a error. by disabling the o2 sensor , will closed loop work ok. does the o2 sensor only read the gas that's been chemically changed after passing thru the cat, and therefore only checks to see if the cat is working correctly or not?
if that's all the o2 sensor does then it should be ok to disable it.

dc5 itr, k20a top, k24a3 sub., jrsc@9psi, kpro

Closed loop cannot operate with the O2 disabled. You must have a properly functioning primary O2 sensor to run closed loop.

WHICH SENSOR IS USED FOR THE CLOSED LOOP PERIOD?
O2 SENSOR OR THE WIDEBAND LAMBDA SENSOR?

The oem primary sensor is a wideband.

Can't we use a R300 bosch sensor as primary O2 ?

A wideband sensor must be matched to the controlling electronics. Thus only the Honda wideband sensor can be used with the wideband controller in the Honda ECU.

Would this be the reason im getting an error code withe the k20a2 civic type r tuned map,

I run a decat/mani fold,

I get an error code saying 02 voltage high??

Please post a datalog and your calibration.

Hondata wrote:Please post a datalog and your calibration.

Might sound stupid,

But for all my searching on this forum i cant find a step by step guide on how to do the above?

Only new to the hondata ecu..

At the top is says FAQ

http://www.hondata.com/forum/faq.php

Spunkster wrote:At the top is says FAQ

http://www.hondata.com/forum/faq.php

I know how to add a file,

But im not 100% sure how to record a datalog,

I know there is a record button but anytime i record and save it, then upload it again ont okmanager i dont know how to play it back etc???

And what exactly is the best speed rev gear etc... to record to know if its running best??

To view a datalog recording, go tot he graph window and you simply grad the line back and forth. You can position your windows so you can see them all at the same time and see exactly what is happening.