Gut the interior - Yes.
> Keep in mind you'll need to keep all the parts, and re-installing these when it comes time to sell it is a fair requirement, but it does help. One of the easier and most beneficial things to do is removing the back seat.
Remove Power Steering - You'd have to replace this with a manual steer box, otherwise the lack of fluid flow in the system can, over time, ruin your whole steering mechanism.
Remove Air Conditioning - Yes.
> However this could prove disastrous, how do you plan on relieving the freon?
Also when reselling the car, you'll either have to re-install it all or lower the price (and it could make it hard to sell).
The easy solution is to just not run it, maybe remove the belt if it's independently driven.
Increase Tire Pressure - Don't go past max.psi sidewall, you'll only wear the tires down the center, but max.psi sidewall is the best psi.
Quote:
Originally Posted by CuriousOne
A warm air intake has less oxygen molecules which means the car will make less power, which means more fuel efficiency. Cold air intakes contain more oxygen molecules since they are denser. As far as I know there's no way to make more power while having better fuel efficiency when you modify your intake, but with an exhaust it is.
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Keeping a light foot on the throttle?
If you can increase FE with an exhaust mod that increases power then the same holds true for the intake. A warm air intake is the equivalent of putting a wooden block under your throttle pedal, govern the engine forcibly or govern the foot voluntarily.
Because I am 90% sure exhaust upgrades will do as little if we can't keep the foot light.
On that note, and inexpensive mods:
First, keep up on the maintenance religiously.
Air filter, pcv valve, breather cap, fuel filter, O2 sensor, oil and filter, just to name a few.
Double platinum spark plugs (run better, longer).
10+mm high performance spark plug wires (about $80).
High performance cap and rotor.
> Increase spark, hence power and FE.
Synthetic oil tends to help as well, but not sure if the cost difference is worth while.