I just started to notice this about an hour ago. When I give it a little gas it doesn't pull as “hard” as it should and when I get in to 3rd gear it seems like the engine is just revving and I'm not speeding up. No cel's or anything, no codes (I don't think, not sure how to check) only mod to the engine is a k&n typhoon that I had installed in the summer. Car is a 2009, I'm automatic as well. Any help is greatly appreciated.

 

Bump

 

Could be a trans issue. Unfortunently most of this forum including me has no idea how auto trans works. Lol. Sorry.

 

trans is prolly slipping id check fluid level and condition low fluid level can cause alot of weird things to go one with a auto trans ie hard shifts or slipping irractic down shifiting etc how many miles do you have on it

 

It's only got 31k on it, my mind is just blown about no cels or codes...

 

warrenty!

 

Maybe you just think its going slower?

Other gears work fine?

 

Other gears work fine, but its definately not just me. Something is jacked up.

 

hmm if it was stick it would sound like a bad clutch. im not much a trans guy but id say check fluid or even just change it

 

vid of problem?

 

I second warrenty. dont even bother trying to fix it. an air intake will not void warrenty, if you feel like the dealer will be a dick, throw the stock one back on, but bring it in. cause checking the fluids is a pain in the ass when GM made the auto trans fluid to last the lifetime of the vehicle. aka no dip stick.

So unless your mechanically inclined, take it in for warrenty.