Hey guys, i have a question, last week i installed CEL fix adapter and ever since my car is not running too good, i noticed under boost AFR's dont go into 11-12.5's anymore like they used to, so i dont boost at all now.

Here is what i purchased, it did fix CEL like problem, but AFR's are screwed up now, i also recently added dum tube and welded into the downpipe. So those are the only 2 things i did right before changes in the way the car runs.
http://cgi.ebay.com/ebaymotors/CEL-F...Q5fCarQ5fParts

 

What was your car running before the CEL fix?

 

it was running perfect AFR's , when in boost AFRs were 10-12.5 in that range.

 

You have fuel mgmt? What type?

 

AEM fic running "enjoithis" map from NY, i'm scheduled to get tuned locally on a dyno on April 11th.

 

Bro....trust me the CEL fix shouldn't change any of your #'s..... now are you running the "HELP" CEL fix...or are you running the one that is sold?.... either way...that shouldn't do anything to your numbers....all the CEL fix does is make the ECU think that the primary CAT isn't missing... that's all. If your #s are changing...I would track that down.

 

well i'm running the same thing thats on the link from the same seller, its like an extender to the OBD2 sensor.

 

I'm curious, are you running the same AFR's at idle? Maybe there is a leak in where you had the dup tube welded to the exhaust which the AFR gauge is reading as lean conditions?

 

do you have it on the right bung make sure its on the lower o2 sensor and not the main wideband

 

Have you tried to reset the ECU?

maybe that dump tube you added is making the 02 sensor go a little crazy with the added dumped air passing through it? Thats just a wild guess though

I would just unplug the battery for like 5 minutes and see if that changes anything

But a custom tune is a must

 

the only way it would affect hte fuel trims is if it's on hte primary sensor and not the secondary

 

Ya i realized that after I posted it, but i was in the bathroom taking car of business and couldn't edit it lol

 

pooping while on sl?

 

yeah guys its definately in the secondary 02 sensor., yestarday i got a CEL and today went to autozone and the code P0138.

 

that code says that the secondary o2 is reading too much voltage at two different times in the cycle.

it can mean 1 of two things.

it's broken, or the sensor needs to be further away from the stream

 

or maybe its a new map that i uploaded, can that be cause by a running a little rich map ?
my tune is on April 11th in Austin and then i'll go to HIN.

 

no, map adjusts fuel

the secondary only reads cat

 

i switched to my old map, no CEL so far, i'll drive like this for now and see, and will stay out of boost 'till after the tune...