Cobb ap afr v. Wideband eugo issue
09-30-2012, 09:40 PM
#1
B.I.G
Thread Starter
iTrader: (4)
Join Date: Aug 2007
Location: AT---EIL
Posts: 1,401
Likes: 0
Received 0 Likes
on
0 Posts
Cobb ap afr v. Wideband eugo issue
Hey guys, so i replaced a solenoid that activated the SSV, and soon after i began to LEAN nothing else was changed, i checked the couplers, the bolts to make sure they were tightened, checked the fuel pump.
So now Kane checked out my map and we made it richer my Cobb was reading ohh 110-11.3, and 11.3-11.5 on up top. Then i replaced my wideband sensor since it went bad and its reading 11.7-11.9 under boost, and my Cobb is still reading 11.0-11.3 I am completely stumped. I do not have any exhaust leaks, and i tightened the new sensor well enough not to leak.
Any thought you guys?
car has 101,000 miles and the o2 sensor (front ) is original.
So now Kane checked out my map and we made it richer my Cobb was reading ohh 110-11.3, and 11.3-11.5 on up top. Then i replaced my wideband sensor since it went bad and its reading 11.7-11.9 under boost, and my Cobb is still reading 11.0-11.3 I am completely stumped. I do not have any exhaust leaks, and i tightened the new sensor well enough not to leak.
Any thought you guys?
car has 101,000 miles and the o2 sensor (front ) is original.
Last edited by 05rx8mazda; 09-30-2012 at 09:59 PM.
09-30-2012, 10:21 PM
#2
did you re-calibrate the wideband when you put on the new sensor? my old LC-1 had to be reset every so often and after replacing sensors...
09-30-2012, 10:58 PM
#4
It is not unusual for aftermarket widebands to read up to 1 point leaner than the stock wideband in the 11.0 -12.0 range .
After a number of years of various dynos and looking at what other people see with one vs the other I tend to think the oem wideband reads on the rich side .
After a number of years of various dynos and looking at what other people see with one vs the other I tend to think the oem wideband reads on the rich side .
Last edited by Brettus; 09-30-2012 at 11:00 PM.
09-30-2012, 11:13 PM
#5
B.I.G
Thread Starter
iTrader: (4)
Join Date: Aug 2007
Location: AT---EIL
Posts: 1,401
Likes: 0
Received 0 Likes
on
0 Posts
That is true i always noticed my OEM reading a bit richer than my aftermarket. I just experienced a cracking noise like buzz and felt it in my transmission, and shifter right when it went to 11.7 around 5-6k rpms on my wideband , and on my COBB it read 11.3. (I have never detonated so im not 100% sure it was detonation)
It is not unusual for aftermarket widebands to read up to 1 point leaner than the stock wideband in the 11.0 -12.0 range .
After a number of years of various dynos and looking at what other people see with one vs the other I tend to think the oem wideband reads on the rich side .
After a number of years of various dynos and looking at what other people see with one vs the other I tend to think the oem wideband reads on the rich side .
Last edited by 05rx8mazda; 09-30-2012 at 11:16 PM.
10-01-2012, 12:59 AM
#7
B.I.G
Thread Starter
iTrader: (4)
Join Date: Aug 2007
Location: AT---EIL
Posts: 1,401
Likes: 0
Received 0 Likes
on
0 Posts
the cobb ap is reading off the greddy DP, and the aftermarket EUGO is reading on the extra bung that's on my midpipe. Difference would be about afoot, foot and a half distance.
Last edited by 05rx8mazda; 10-01-2012 at 01:04 AM.
10-01-2012, 11:51 PM
#8
10-02-2012, 12:07 AM
#9
SARX Legend
iTrader: (46)
What aftermarket wideband do you have and did you replace the sensor for it or the stock O2 sensor. If you replaced the aftermarket wideband sensor did you replace it with the exact same sensor it came with?
Thread
Thread Starter
Forum
Replies
Last Post
JimmyBlack
Series I Major Horsepower Upgrades
273
02-10-2020 10:23 PM
dbarber
Series I Trouble Shooting
14
07-25-2015 01:34 PM
