Thought I'd start another thread for everyone who is recieving a CEL like myself. Maybe we can consolidate all the threads that will probably start into this one. And hopefully find a working solution for everyone having problems.

If you had or are currently having a CEL from the K&N CAI please post here.
We can then hopefully help each person that is having a problem.

I got a CEL after install and it went off (memory code). But, now it is back on. I will be checking the filter + maf through the driver side head light on saturday (if the cel is still on, which it probably will be)

Do you know what the code is?
Have you re-checked your installation?
Did you use the K&N allen bolts supplied for the MAF?

Has anyone contacted K&N for any suggestions?

 

I have the Fukita intake and the P171 lean code exists. It is not only K & N intakes but all intakes. The parameters of the MAF are VERY tight, GM don't want you fuggin with anything performance wise.

 

Just came in from the garage, mechanic friend and I put on the K&N. Did NOT unplug the battery. No codes whatsoever.

 

It takes a while I got mine after about 20 + miles and 2 days.

 

Does anybody know how to reset fuel trims on the ss ? I was just wondering... permafried I thought made a good point about the MAF reading the higher air flow (beyond what was previously the norm) and maybe that causing the CEL... I know that when we replace MAFs on benzs we always reset the long and short term fuel adaptations so that the PCM will settle back in with the new sensor... Was wondering if maybe this would help with these intake installs ? I know you can disconnect the battery..... BUT On most cars these days that does NOT reset anything in the PCM... as the fuel trims/adaptations remain stored inside the PCM... I dunno.. just an idea

 

So wait, should you not unplug the battery when installing it? What does unplugging it while installing it do? Reset the computer, so after you install it you drive the **** out of it to get the computer used to it? If i'm mostly right about this, im not trying to sound like a jackass about it. I really don't know what unplugging the batter does, but i have heard it resets the computer.

 

I was kind of suggesting and asking at the same time to see if anyone knew for sure... Disconnecting power to PCM on an SS may just reset the module completely... but I just know from experience that on a lot of other new cars it does not... and if that is the case on the SS maybe somebody should try getting the fuel trims reset and see how the car does... just an idea... I would recommend disconnecting the battery during any mod personally... never know what might happen.. besides its really easy...

 

The only way to reset fuel trims and MAF levels is with a tec 2 scanner. My cousin is a tech a Mercedes and they are the same as with this car, the MAF parameters are so tight that an intake or even a filter can cause a CEL. The only way you can adjust the parameters is getting a GM tech to use the scanner and reset the trim levels and MAF parameters, you just have to fimd a tech willing to do it. A dealer will not re adjust your trim levels or MAF parameters to adjust to an aftermarket intake. My buddy is a sakes manager where I bought my car so he is going to ask a tech to "look" after my car lol.

 

Then I would recommend to everyone getting an Intake to try and do that if they can... I think that may be to no CEL.... Then the PCM will be able to learn to maf with intake installed right from the get go... Or If you cant.. I say just give it some time.... maybe 500 miles give or take a little... The PCM should equalize by itself ... It will just take quite a bit longer... I know there were quite a few RL guys having CEL probs with intakes... but I know a lot of them just gave it time and they seemed to work themselves out...

 

Could it be that maybe people are grabbing the MAF senser with their bare hands when installing it? Maybe the dirt and oil from our hands are making the errors come up. Just thought I would throw it out there. Chances are it is just because of the sensitive computer though.

 

I'm not sure if anyone checked out the link that MarcS posted on the other thread, but it did an excellent job of explaining how the vehicle handles different scenarios during idling when it comes to running rich or lean. For anyone that missed it here it is again: http://ackthud.com/shawnfogg/mixture.htm. Perhaps someone could try removing the negative terminal for upwards of 30 minutes, reconnect it and allow your car to idle for 10 minutes or so (just don't forget your extra remote since the car locks itself) and see if this will maybe somewhat help clear up the problem since adjustments are made during idling (if I'm understanding the above article correctly).

I believe disconnecting the negative terminal is done in an attempt to starve the PCM of current hoping that it will reset itself (please correct me if I'm wrong ) but this doesn't appear to be working as expected. I'm wondering if for one there is still enough current in the system to continue to power the PCM, or if it could also have battery backed memory similar to the battery on your motherboard when it's disconnected from a power source. The above behaviour can also be seen with a PC if you forget to drain your capacitors after having disconnected everything from the tower and board...doesn't that make for one hell of a comparison .

It looks like Ninja is right in that the only way to truly "reset" everything is to have a tech do it which could be tricky since they're risking a lot for you by doing it, mainly their job! I'm not sure if we're seeing more issues with the intakes on the SS because more people have purchased one, or if it could possibly be due to the tolerances being much tighter on the 2.0 than the 2.2. I guess another difference that could be taken into consideration is for a full CAI installation (not SRI) the MAF sensor is much farther from the filter on a 2.2 than on a 2.0...I can't see that making much of a difference though. I never thought I would see this much hassle for the community from installing an intake on a car .

Good luck to everyone...hope it gets cleared up .

Permafried-

 

Its actually more like trying to erase your hard drive by turning your computer off.....

 

So I was close .

Permafried-

 

I called K&N today, and the tech over the phone told me to disconnect my battery for atleast an hour, and that this would reset the computer so it would relearn the air fuel levels. I still have the light though, but have yet to put any miles on the car.

 

This was mentioned before by someone, but I think the final fix will have to be GM releasing new software for the pcm.

 

well if thats true i'd be driving around with a cel until january. can't be doing that haha

 

That's why I bought an Auto Tap, I can shut it off at will

 

yeah but it will just keep coming on haha

 

I know my fuel is lean right now because it hates to start up in the cold, but my light is not on. It was reset at the dealer.

I'm waiting for my auto tap to arrive so I can check the actual AFR and see what's going on.