Originally Posted by 1994 accord

If you call up Honda or any other car company they will in fact tell you and show you proof from adding an intake will help out mpg's.

Originally Posted by 1994 accord

The computer in a car can only tell the engine to help out so much by adjusting the fuel flow. Even then it would have to lean out the fuel flow and that's not good on an engine at all. Have you ever had a car on a multi-purpose dyno before? I have, and have also seen many others going through the plant for work. Like for example, we actually had a 2008 Ford Mustang Bullitt on the dyno for my work to show why things like filters need to be replaced. The car was setup on the dyno and hooked to the computer. The computer tells us everything that's going on with the car as well as the outside air, what degree air is coming in, and wait for it.... wait for it...... MPG's as the car's running. the first pull turned out normal as with any stock car would. They replaced the air filter, just the filter. Ran the car again, with everything back to the same, and the car got just from replacing a dirty filter an extra .1 mpg at WOT. They did the same pulls just normal driving, and the car still did better with the new filter by .6 mpg. Just normal driving. Then they showed us how if you add the Roush Cold Air Intake to the same car and ran it again, WOT got better by .8 mpg, and normal driving got a better of 2.3 mpg. So that R&D was done for nothing huh? Is that what you're trying to tell everyone? Every car company does this R&D on things like this so it gives them many facts about their products to help sell them. Deisel Engines suffer even more when the filter is clogged just like gasoline engines.