I just took my k&n sri off and put my stock intake on and my long term fuel trims is at -3 and my stft srent steady, is this normal?

I thought they should be at zero

 

Did you reset your battery? Short term will change immediately even after you reset.

 

Yeah i reset it twice now, should the long term be at 0? The short term fluctuates a bit. And my ling term is -3

 

In a perfect world yes, but way to many factors can throw it off like fuel,temp,elevation, ect.. It is better to be neg though..

 

I'd give it some time to settle.

 

-3 is very common. I'm on GMS1 with stock intake and new filter. It ranges almost 3% depending on the gas in the car.

 

completely normal dude. STFT will never be steady as its a constant reading of the changing fluctuations. It will bounce all over the place.

Curious, what did your K&N SRI look like with regards to fuel trims.

With that said and in terms of your other post about the CEL. You do not have a boost leak.

wait a minute... Is the LTFT staying at -3.0 or is it constantly dropping...

 

it will take a while to settle in

 

The ltft has sayed between -3 and 0 do i am happy, thanks for making me feel better guys ahah, and my k&n sri was about +6 to +8 depending if i was hard on the gas or not

 

YEah, you have to tune for any intake. Guys will say they put one on and aren't having any problems, but they are the owners that don't have logging software, so they don't even know what's going on. Cheers to you for buying the equipment to scan with.

 

rotate the K&N intake filter and see if it changes

 

i have my stock one on

 

I have the k&n sri, mpx catted downpipe and exhaust, and a gmsi and right now my long terms are sitting at 3.1%

 

Also when discussing LTFT, tell us what gas you are running. Makes several percent difference.

 

I use ultra 94

 

I see almost a 3% gain in LTFT by using 94 vs. 91. Same if I take 91 and add a gallon of E85