Reducing weight without gutting the car is going to be difficult. The trunk is likely the only place you will get rid of weight, and even that will be minimal, basically carpet, and if you dare, the spare tire/jack/handle, etc.
Any junk in the car removed will help, but the weight comes from the drivetrain, sheetmetal, and interior trim (mainly the sound deadening/power seats), without serious modifications, you won't see any meaningful gains. Over 20 years, removing 100lbs might be measurable, but for anything short term (1-5yrs) you won't be able to measure the gains.
Look at it this way...general rule of thumb is for every 100lbs removed, you gain 1/10th of a second in the 1/4 mile. You'd have to remove 1000lbs to gain a full second in the 1/4 mile.
Removing the factory cold air intake that's tuned to your engine and installing an aftermarket cold air intake will actually reduce performance. Cold air intakes don't work on fuel injected vehicles with a MAF sensor like the one on your car. They create the rumbling noise by creating turbulence in the intake--just the opposite of what you need to improve performance.
They're really a joke. Now if you want to rip out the fuel injection and install a carburetor, THEN a cold air intake will help. Read this article on why they're worthless on fuel injection
http://ricksfreeautorepairadvice.com/col...
If you would like to add more HP, U need to rebuilt engine.
Modifying an engine to produce more power is basically very simple. The power an engine produces is restricted by the amount of fuel it can burn and this is governed by the amount of oxygen that can be crammed info the combustion chambers. Modifications that permit more fuel to be burnt will produce more power.
How to get more oxygen into an engine is dependent on many factors and can be done in various ways - improve air flow through the head, change cam shaft(s), larger valves, supercharge/turbocharge, nitrous injection, ECU remapping, etc.
Parts forged in high-tech material will help your buick reduce weight,such as 4340 EN24 Forged rods,and you will find these at www.maxspeedingrods.co.uk
The most direct route would be a supercharger. There's simpler less expensive ways to go such as a cold air intake. Aftermarket plugs or a chip. These options will produce minimal gains for what your wanting. But a supercharger, will give you what you want and with dramatic results.
LOLOLOLOL. it's a Buick, for christ sake. you act like your going to go and race a Mustang or some thing. cold air intake, LOLOLOLOL
I recently purchased a 2000 buick century custom for like $500. And after looking at it pretty thoroughly there isn't anything that's majorly wrong with it at all. I replaced the fuel level sensor because my gas gauge was all over the place, fixed the rear inside door panel that was falling off. I need to replace a wheel bearing on the passenger side and a tie Rod on the driver side. I did the oil change right after i got it it. The kid that owned the car before me didn't know how to take care of a car. I need to replace the air filter and the cabin air filter. But I am considering just replacing the air filter with a cold air intake. Any suggestions on light weight parts I can replace existing parts with, or weight reduction ideas that don't require me gutting the interior. Or anything I can do to add some more power, make it lighter and make it better on gas, although it has been pretty decent on gas so far.. thanks for your ideas guys!
