Someone that really knows about car parts help me?

don't comment if you assume you know what your talking about, and you just know the info because thats what everyone says.





Only Comment if your really know about car parts etc. Like maybe you mod up cars for a living or what not.





Does intakes improve on MPG? im thinking about getin a injen or K%26amp;N? And also Exhaust? thinkin about Works.|||The last episode of Fifth Gear showed that the best way of improving you MPG is the correct tire inflation and driving conservatively. You will get a better MPG with the air intake but the price of the intake will most likely offset the cost benefits.|||The truth is yes and no. Think of an engine as a type of self powered air pump.


There are many factors involved . RPM, airflow in the intake and exhaust, engine size, compression ratio, bore ,stroke, valve lift,cam lift, cam duration, cam lob separation, cam lob timing (intake/exhaust), power-band of the combination of the system.


Modern cams and heads are designed to work with a set amount of back-pressure to match the emissions systems.





A K%26amp;N filter allows more airflow BUT the throttle plates is what restricts the airflow into the engine and controls the speed . The K%26amp;N helps most at WOT (wide open throttle) ,in stock trim marginal at best. A poor quality filter is restrictive and will choke an engine at lower speeds. I had access to a dyno and tried this and found Fram are only good at mid range running as long as they are clean and dry others very greatly, Delco and Fomoco are decint.





The spiral kits(tornado) for the air cleaner aren't worth the $$$ because under normal driving you aren't running under WOT and very marginal at best there. if under the throttle plates it may work better.


The exhaust ,If changed and no longer matches the rest of the system can drastically alter your fuel mileage to the poor. My nephew put a new performance muffler on his P/U and lost almost 1/2 his mileage he put on the correct one and got it back.





So don't make any changes that you cannot change back.|||Well it all depends on what kind of car you have, is it new stock or what? Getting yourself an intake and a more free flowing exhaust will improve by maybe 2-3mpg it all depends on your car. When it comes to exhaust that goes for headers, high flow cats, or just take the cat off, illegal but better and also louder, and after cat exhaust, and if no cat, then just run a test pipe, for intake depending if where you live has a lot of rain or flooding, go for short ram cause with a cold air your car can hydro lock and your engine is dead. simple things too, check tire pressure, maintain the car, change it's oil when you need to. reduce the weight of the car, don't carry around unnecessary things, you could always take your spare tire out and get Fix a Flat that's at least 10 pounds off. And most of all, your driving style, unless you're being chased by people who want to kill you there's really no need to be going any faster than the speed limit or traffic.





http://www.howtoadvice.com/savinggas|||Just bolting on new parts won't achieve much unless you consider how the whole engine tuning package will be affected.


A new intake will affect what kind of camshaft, ignition timing curve, fuel delivery system will be required. Likewise with the exhaust.


I would recommend getting in touch with a reputable engine tuner and discussing what works best with your particular engine bearing in mind what use you will put it to. An engine built for the race track will have different requirements to one for everyday driving in traffic.


Good luck!.|||Both changes will have a slight improvement in you MPG. The biggest thing you will feel is the improvement in overall performance. I have personally done the K%26amp;N Filter replacement on my 97 Fat Boy with the addition of Vance and Haines Long Shot Exhaust. I have replaced my stock air filter in my 2004 Dodge Ram. This helped my towing going thru the mountains from Ten. to Mich. and back. There was an improvement of 2 miles per gallon on my trucks computer by this change. I changed out the filter in a 2002 Honda Accord with the same improvements. I have liked the small MPG improvements but have really enjoyed the performance difference. I plan on doing the same to my recently purchased 2008 Hyundai Tiburon. These are always the first steps to performance upgrades.|||Opening up the intake and exhaust side of an engine, will give you some power increase, the problem is it moves your power band higher, so if you drive a lot with wide open throttle, these mods are for you. If you want a daily driver with low end and mid range performance these mods will not make much difference. As to mileage, possibly, doubt you will notice a difference.|||it might marginally improve your MPG by changing your intake and exhaust. though, i don't think it would be worth it cause the savings would be rather negligible in spite of what manufacturers like to claim|||I don't think your going after better gas mileage as much as you are more power. As for better gas mileage your better off just taking the money your going to waste on addons and save it for gas.