All i got on my 04 Sedan is the K&N Filter and the custom Midpipe .

Why whould my engine service went on?i diconnect the bettery and wait for 5 mins and connect it back. the light was gone.

so, should i go back to Dealer let them check out?

would my only 2 mod avoid my warrenty?
would they charge me for checking?

thanks for HELP.

 

Was the gas cap not turned until it clicks? One of the top causes of the CEL going on, I believe.

I may be wrong, but by disconnecting the battery you may have erased the code in memory that would let the mechanic know what the cause was. Disconnecting the battery was not likely to have actually fixed the problem. Next time, take it to a place that can do a diagnostic check.

Were these mods just done? I doubt that they would be able to claim that the filter caused a problem that would result in a voided warranty. I don't know anything about the exhausts. In general, as is discussed here often, your warranty is fine unless the dealer can show that your mod actually caused the problem.

If it goes on again, bring it in.

Good luck.

 

the exhaust was done about a month ago. nothing happen. the 3rd day after my K&N fiter installed, the light went on.

 

When you did your filter did you undo and redo any wire harness connections? Or possibly bump one? There's a sensor with electrical connections attached to the air inlet that might need to be checked. Good luck.

 

I would say that it is prolly your k&n filter. You should take that filter of because they let dirt into your engine. And the dirt was prolly clogging up your sensors in your intake. K&N filters are really hard on your engine because they let way to much dirt through. My friend put a K&N filter on his 3.0 liter and it totally messed up his engine because it lets alot of dirt into the intake.

do what you think but I would lose that filter and put the factory filter back on. You have to remember that infiniti put alot of money into researching the best filter for this engine and a cheap k&n filter isn't going to impove it.

 

He's funny.

K&N specializes in CLEAN airflow. They've earned a reputation for being a great filter because they are a great filter.

If you get another CEL go by autozone and get it read for free then decide if it's something you can fix yourself or something the dealer should take care of under your warranty. It's hard to say what they'll cover or not until you know exactly what the problem is.

 

How much oil did you put on the K&N??
Too much oil will give you MAF sensor problems.

 

If you look at a k&n filter you dont have to be a rocket scientist to know that it cant filter very much dirt. It stops small dogs and cats but that is about it. Now there might be some better filters available I dont know because i never researched it. You have to remember that there has to be a certain amount of air resistance in order to filter all the dust out of the air so if you have a more course filter then it will have less resistance and of course let more air into the intake but it will also let more dirt in as well. right?

 

Go read a little. Appearances are one thing, performance is something else entirely.

http://www.knfilters.com/facts.htm#WORD

It's possible that if misused a K&N can offer decreased performance - I'll give you that. If used as designed and properly maintained, however, I'll take a K&N over most any filter out there.

I've been using them on and off for over 25 years and have never had a problem that could be traced to air filtration. I've used them on cars, motorcycles and have one on a modded diesel pickup right now with no issues. None. Zero. The diesel is posting over 400HP and 700TQ and air through the motor plays a big part in that. Thank you K&N.

I would place serious doubt on the fact that the K&N your 'friend' was using caused serious problems with his motor unless he didn't know what he was doing or was using the filter under the wrong application. It can cause a CEL for the reasons stated in previous posts, but that's not the fault of the filter, it's the fault of the user.

 

I'll have to chime in with a counterpoint on the K&N filter....I have the Stillen Cold Air Box and it came with a K&N filter. Back when So Cal was going thru all those fires, my filter did a bang up job of stopping the bad air.

In subsequent oil analyses (sp?) performed by Blackstone, they found no evidence of dirt or harmful materials getting caught up in the engine. And as DaveO can attest to (sorry my friend*), the filter was totally filthy, but did its job.

Cheers, Ted

* Dave was an absolute true friend and handed me off a fully recharged filter in return for my ugly beasty of a filter. I think it took 6 attempts to get it clean? I am so embarassed... but the car runs great now! (lesson learned)

 

"analyses (sp?)" This is the correct plural, and thanks for caring.

So, for most of us is the K&N a worthwhile addition? What is the story with oiling-is this done only at the start or periodically? What type of oil?

Thanks,

 

My '91 300ZX with 168,000 miles has a K&N Filtercharger air filter. I just had a Blackstone oil analysis done and they happened to comment (without knowing what kind of filter I have) that the oil showed that the air filter was doing a GREAT job.

 

The K&N comes properly pre-oiled from the factory- you don't have to do anything when it is installed new. They recommend cleaning and re-oiling it at 50,000 mile intervals with a kit you purchase separately. Since the filters are something like $35 from Grubbs, I won't bother with the trouble and will just install a new one at 50,000 miles.

 

As offered above, everything you always wanted to know about a K&N:

http://www.knfilters.com/facts.htm#TIPS

 

ITG Air filters own me. I'm thinking about changing the filter on my AEM intake with an ITG maxogen