Should I Have a Register and an in a/c Unit Air Filter in Place at the Same Time?

No, only a filter in the unit is appropriate. Sometimes this is substituted for a filter in a return grill or just below the unit. There, you can use a "high grade" one.

1. this is for unresolved_777....about my scion tc..?

when you say bumper cover do you mean like just the plain old regular front and rear bumper? cuz i dont know anything about a bumper cover. im not familiar with iautobodyparts.com. my bumpers, personally, are remanufactered cuz i have had a coupe fender benders. i normally try to stay with legit people so for those instances i went to my dealers personal body shop. and what gets me is that if the actual "kit" for the bumper from the dealer is roughly $500 and iautobodyparts.com are selling it at $124 its gets me thinking is it bad (as in the overall product build not being OEM specs, or meeting the DOT certification), or are they remanufactered parts. one thing though for sure is the dealer cost of 500 is reliable, and it comes primered and on top of that primer it already has paint coating (of your car) and the clear coat. maybe it is a good buy from iautobodyparts.com but its probably not pre primered, painted and clear coated, cuz after reading the info section it doesnt mention anything like that, and having to do that will add up on cost and come close to the dealer cost more than likely as well as instalation. yeah the dealer likes pulling legs, one suggestion is try to become buddys with one of the guys, thats what i did. maybe try finding someone else that has done business with them. as for maintanence wise just normal stuff. oil change and oil filter change. air filter. inspect the brakes visually to see if you still have plenty of pad life left and just check fluid levels, tire pressure and inspect tire tread life. if you havent gotten to anything in a year id say it should be ok, maybe just needing oil change, but if it hasnt been driven frequently then it shouldnt need it, but to be safe it would be good to change the oil and oil filter. just try not to put to much oil or the car will run like crap, i learned the hard way. 93 octane gas once a month is also good to do. pretty much all i got for now. hope that helps.

2. How do I clean my K&N air filter without buying the K&N filter clean and recharge kit?

The best way to clean a k n n filter charger? Is to burn that motorfcker. I got two, a flat one, and a round truck one with a top filter part. There is too much hassle involved. Just go get a new one for like 8 bucks. It will save your senses

3. What is the purpose of riding a scooter/motorcycle without an air filter?

Air Filter Purpose

4. I have a 1989 Chevy blazer how much should it cost to replace the spark plugs and wires? Please Help?

Plugs, wires, cap, rotor, air filter, oil filter, oil change, fuel filter, good mechanic, under $ 250

5. 2000 neon wont go over 65mph?!?! ?

check you are air filter happened to a friend same a described

6. What are some things you can do to make a 5.4 V8 on a 2005 Lincoln Navigator more fuel efficient?

Use cruise control whenever possible and keep the speedometer below 65 mph. Make sure tires are properly inflated, air filter is reasonably clean and eliminate all unnecessary cargo weight. You will prob. get a lot of ppl saying that if mpg were important to you, you should not have bought a large SUV. But that does not change the fact that some people need those vehicles; otherwise Ford, GM, etc. would not have built them.

7. What can I do with my fireplace?

It sounds like a heatilator fireplace. Somewhere you should have a switch to turn the fan on. You should take the vents off and see if there are any fans in there. You might ask the landlord where the switch is to turn it on. If there really is no fan you can get a small box fan or air filter at a thrift shop to circulate some air.