Thread: Cold Air

Originally Posted by Bio248

most cars with JUST an intake and no tuning behind it will lose gas mileage.

That is a pretty open and blanket statement....do you have examples to back it up?

Every car I have owned has had a K&N or similar type of intake on it and I have yet to see a loss of gas mileage. Some of them I did just and intake, some I did other things also.

Here are my examples:

1997 Chevy 1500 w/K&N intake and custom exhaust - improved mileage

1985 Nissan 300ZX turbo w/"custom intake" and K&N filter and waaayy overboosted - about the same depending on where my foot was.

2000 Nissan Maxima - K&N intake - a little better

2001 Chevy Duramax - Full Banks kit (dynoed at 520HP and 735Lbft) had some intake tuning and exhaust - a lot better gas mileage, if I drove it like a normal human being and wasn't blowing rice off the road.

2003 Nissan 350Z - K&N intake, SSV intake manifold and full exhaust - better gas mileage

2006 VW Jetta GLI - Lots of mods 32MPG when not pushing it hard.

2006 GXP - K&N intake - looking to be about 2-3 better, but the jury is still out for now...had a bit of snow and I want to make sure my driving habits are not effecting the results.

With all this being said, I did have a friend of mine that bought an intake for a Mustang and he stated that he lost gas mileage. I think that it was a Ford Racing intake, but I cannot be sure. While I am sure that it is possible to lose gas mileage, in my expierence it has pretty much always been the opposite. A well designed intake should enhance the performance and efficiency of an engine.