guys today i changed out my volant filter for a K&N and after a drive from work to home my service light came on. the reason i switched was to allow more air flow. now my truck is tuned could this just be a need for a retune with this new filter?

 

too much oil on the filter. the oil is getting on the MAF sensor. Dry the filter a little and clean the MAF sensor with some brake cleaner.

 

Have you scanned for DTC's yet? Post up your codes.

First thing you need to do is recheck your installation for loose clamps/boots, etc. Wouldn't hurt to clean the MAF at the same time.

 

the filter was brand new it had no wet oil. does the brake cleaner work on the 09 as well.

 

Don't use brake cleaner on your MAF. There are several brands of MAF cleaner available at your local parts store.

 

ok codes that appeared r p0175 n p0172 to rich

 

Was the check engine light on before you changed air filters?

 

no i switched on a couple hours later

 

Sounds like unmetered air entering the engine. Computer goes pig-rich to try to keep the engine running, sets a code. Did you recheck your installation?

Also, lose the TB spacer.

 

i had on a thick volant air filter that changed cause thought it restricted flow n now i get this everything is on good