Motor lost its lope

[TurboTims]

Its getting colder here in Minnesota and I have noticed that my car is loosing its lope. I am thinking its because its getting colder but am not sure. I have changed my AF's at idle, messed with timing and even changed my cam timing just to see if I could get it back. Just wondering if anyone has noticed this during season change or if I have something else going on. I have BC 272's on a 2.4.

 

[1qkfwd]

Its getting colder here in Minnesota and I have noticed that my car is loosing its lope. I am thinking its because its getting colder but am not sure. I have changed my AF's at idle, messed with timing and even changed my cam timing just to see if I could get it back. Just wondering if anyone has noticed this during season change or if I have something else going on. I have BC 272's on a 2.4.

Is your idle higher now than it was before??

 

[TurboTims]

No, I have even tried lowering and raising it. Im confused by it.

 

[1996dsm]

I have BC 272's and my car has done the same. i randomly noticed it one morning sitting in the car warming it up.

 

[TurboTims]

My old laptop got stolen but I wish I could try an older tune. I just dont know what would be different, I have tried everything.

 

[JusMX141]

Air Density Calculator

Colder air is more dense and contains more oxygen due to the molecules being closer together. So when the temp drops, your tune will theoretically lean itself out....although this should be within the parameters of what the ECU can calculate on it's own during everyday operation. Not since the carburetor have we needed to completely re-tune based on changes in temperature.

If you were shooting for a max-power situation in cold weather it would require a re-tune, but daily driving will have no effect.