ckasher145

What are the best mods you can do to the 5.4?

cullinan88

Keep ur foot out of it and stay under 2k rpm ull get around 15, at least I do and I have 33's.

Andyh

Agreed, definitely keep it under 2k rpm as much as possible. The more you are over 2k the faster you'll see your mileage drop.

DemonicFX4

buy a civic.

sdatrlp23

iTrader: (2)

So you're looking for horsepower OR better mileage? You can't have both unfortunately.

^for better mileage

And for more power, supercharge it.

scobar

iTrader: (4)

For horsepower, blower.

I've said it before, and I'll say it again, modding for mileage, you bought the wrong vehicle.

ckasher145

Blower? What do you mean?

sdatrlp23

iTrader: (2)

Blower = supercharger

alsatropine

iTrader: (2)

Whew! Just looked at one and it was 5000

sdatrlp23

iTrader: (2)

Your best bet would be to find a used one for sale. That is, unless you have the money to spend on a new one.

That would be the best way to get a noticeable increase in performance. All the other small bolt on type of things won't do quite as much for you.