Could a tech drop some major cam knowledge?(Sticky?)

First post and I don't think it will be short. First you must look at duration and lift. Duration is how long the valve will be open and lift is how open it will be. When Honda makes cars they make them reliable and to please the majority of the market which, sorry to say, doesn't care for the extra power, decrease in mpg and other "problems"associated with cams. Why else were the gobs of LS Integras, less GSRs and only 2000 Type R's? On to the technical... The reason you get worse mileage (with new cams) is due to the fact that your cams will be open longer and higher which equates to more gas going in your engine. So Honda finds a nice balance on GSRs between performance and daily driver. As far as idle that has to do with lift mostly some duration. Your small lobes (low rpms) have a relatively small lift and duration to help improve fuel economy in daily driving. When you add a totally different characteristic to the low rpms you'll feel it because they are moving slower (hard to explain). Imagine an egg rolling oblongwise under your hand. At low speeds you can feel the exaggerated shape of the egg lumping under your hand. But if the you were cruising with that egg really fast it would be less noticeable, almost as if it were becoming a sphere shape. As far as aftermarket cams it's all about where you want to go with your car. Most have stock idle duration and lift and only worry about modding the actual VTEC. That's the way to do it for a daily car. You'll pass (hopefully) emissions & won't have to keep your foot on the gas at stoplights to keep your car idling so rough (ie. speed up that egg a little).