I. The Basics
1.) Weight Reduction. The easiest and BY FAR the cheapest thing you could do to your ride is weight reduction. (Not recommended for long distance/daily used cars)
Gains: +Handling +Style (Rims) +Acceleration -Weight -Comfort
Step 1: Remove rear seats, spare tire and jack, radio/stereo.
Step 2:
Purchase light weight rims. A perfect balance of rubber and rim are
extremely important, too much tire and they wont heat as fast, too less
and they'll heat to quick causing a less comforting ride and extra
wear. For most vehicles, the best sizes are between 16" and 17". (SEE
SECTION 12 FOR RIM & COLOR ADVICE)
Extra options:
Adv. Step .5: Remove Dashboard and interior door panels
Adv. Step 1: Replace front seats with light weight racing seats.
Adv. Step 2: Replace hood/bonnet, doors, and boot/trunk lids with carbon fiber panels.
Adv. Step 3: Replace glass with light weight plastic inserts.
Adv. Step 4: Replace tires with wider, grippy-er treads. DO NOT USE CHEAP SPACERS, THEY WILL FLY OFF!!
2.) Suspension.
The suspension is the prime link between the car and the wheels, and
you definitley don't want your car bouncing around at high speeds.
Gains: ++Handling -Weight +Comfort +Style
Step 1: Replace/add sway bars. By adding sway bars, you reduce body roll of your vehicle thus keeping your wheels firmly planted through fast corners.
Step 2: Change
your springs from stock to either sport shock/spring kit or
"Progressive Rate lowering springs" which lower your center of gravity
in turn adding style and handling without compromising the ride quality.
Alternate Step 2: Instead of only replacing the spring, you can opt to change the whole coilover, or "coil spring over strut", which is more comfortable and more durable.
3.) Brakes.
If you can't stop, there is no need for power. YOU NEED BRAKES BEFORE
YOU UPGRADE YOUR ENGINE, ITS TRUE! Brake later and accelerate sooner.
Its a racing proven formula.
Gains: +Handling +Weight/-Weigh
Step 1:
If you still have stone-age drum brakes, I highly recommend upgrading
to disks. If you do have disks, make sure your system is up-to-par with
the speeds you will be going.
4.) Transmission. Puts the engine's power to good use. This step is primarily to ensure all of your horses will be put to use.
Gains: +Acceleration -Weight
Step 1: Replace your clutch with a light weight performance option and replace flywheel with something more light weight.
Step 2: Poly Transmission and Engine mounts reduce drive-train flex exaggerated by rubber mounts. They also eliminate
"chattering", missed shifts, and broken parts caused by drive-train flex.
Step 3: Replace clutch cable with more responsive pedal feel.
Step 4:
Short shifters feel a lot better and give you a better feel. Mazda
pulled this off beautifully with the MX-5 Miata. You can remove your
knob and cut about 1.5" off the stick which will give you a better feel.
Step 5: Update transmission fluid to a more expensive brand. You WILL feel a difference.
5.) Engine Mods
(FINALLY!). You can't just be all show, you're going to need some "go".
At times, an engine swap is the only real hp booster. Start off with a
general engine check up. Then
get all your fluids changed. If you have access to a dyno, go for it.
Alternatively, you can download a dyno app for your iPhone/iPod Touch.
Just search "Dyno". This way you can monitor your progress.
Gains: ++Acceleration +Top Speed +Weight +Style
Step 1: Improve stock intake by replacing filters with OEM replacements from K&E.
OR
Change
your set-up to a Cold-air intake. I highly recommend K&N system
with a K&N air bypass valve. This valve prevents hydro-lock if your
system becomes submerged in water. This step alone will add 5-15hp
Step 2:
A better exhaust will flow better and produce a better noise. The
cheapest option is to buy a hi-flow exhaust muffler and self-wielding on
pipes to fit your ride. Or, you could opt for a full cat-back system
and thermal stainless steels are a good option. Cat-backs often give
~6hp gain, which is little for the amount you're paying. Also, if you are low for cash, don't go for any chrome. Chrome costs more than stainless steel with no difference apart from looks.
Step 3: Update headers to polished/port matched/knife edged (ask your mechanic)
Step 4: Spark Plugs can be switched at anytime so this step can go anywhere. I recommend
That's about 20+ hp
Adv. Step 1:
Turbo/Supercharge with EXTREME caution. This step may add as little as
20 to as much as 100+hp. AN ENGINE SWAP MAY BE MORE SUITABLE ON OLDER
VEHICLES. Also, check your car's compression ratio. A healthy ratio is anything under 10:1. A high compression ratio means more air is inside the engine. A turbo pushes exhaust fumes back into the engine. Too much air, and the engine block cracks.
6.) Downforce.
This applies to cars that will be traveling in excess of 60mph or
96/97kmh. For FWD cars i recommend a front lip spoiler. They reduce
airflow under the vehicle and re-route it to the intercooler and
radiator. Front lips push the drive wheels into the ground for more
grip and handling. For RWD cars, small spoilers do the trick without
giving you a ricer status. Spoilers do add weight, so be cautioned when
adding a very large one. FWD cars should only resort to rear spoilers
if you are traveling in excess of 80mph/120kmh or the back "slides" or
"kicks out" during high speed turns.
Gains: ++Handling +Style +Weight -Acceleration (due to drag)
Before
buying new parts from suppliers, save a buck and check the market. For
example, a 95 Civic can use brakes and updated parts from newer models, just as a 1999 Mazda 626 can use certain parts from the new Mazda 6.
Look around the market before ordering online! Same goes for rims and other exterior parts, such as Mazda MX5/Miata rims could count as a light weight alternative to your steel wheels.