[HondaTech21]

just installed a DC Sports race header, guy i got it from gave me a good primary but said the secondary was bad, which has a defouler on it. He told me that if i reset the ecu that it wouldnt reconize that bad sensor til about 150 miles which i wont even come close to racing. Is that true or false? i reset the ecu from the fuse box and cleared all the codes from my obdII scanner but keeps throwing a code (o2 sensor circuit no activity detected bank 2 sensor 3) Now would that be the secondary? I unplugged the primary to see if any changes in the scan it and it threw a different o2 sensor code so i plugged it back in, cleared everything and that same code keeps coming up. Will running the secondary like that make much of a different in performance for what im using the car for, dirt oval track??
Thanx

 

[HondaTech21]

nope, you do not even need the secondary.... just disable obd2

im lost, disable? the cel will still come on right? will there be much difference in performance?

 

[HondaTech21]

do you have kpro?

nope, if i did i wouldnt have to worry about any of these problems, anyone got one for a decent price?

 

[HondaTech21]

yea man just get that k-pro and ur problems will be gone

the class i race in in suppose to be an inexpensive class, esp since were only racing for 100 bux.

 

[HondaTech21]

I just saw a secondary 02 in the FS section for like 40 bucks.

thanx ill see if i can find it

 

[HondaTech21]

found it, but its from a type s. Will that make much of a difference?

 

[HondaTech21]

dude, we dont even know wut motor you have or any info besides, dc sports header, good primary, bad secondary, defouler and cel.

thats cus this got moved from my original thread, "02 civic si project dirt track car" so its the a3. sorry

 

[HondaTech21]

http://www.k20a.org/forum/showthread.php?t=52603

 

[HondaTech21]

The typeS secondary o2 sensor will work. That is what I have in my EP3.

thank you sir

 

[HondaTech21]

Ok finally got a secondary o2 sensor but think the primary sensors ive been trying the whole time are bad since my scanner has been throwing a code p0166 which someone told me is the a/f ratio primary sensor. So now im in a rush to get a primary from a k20a3 if anyone has one let me know. Thanx