Black_05f150

I have an 05 screw 5.4 leveled with 35's I was just wandering if it's normal to be getting about 9.8 city and 11.2 highway I don't drive like a bat outta hell and was just wandering if there is some solutions or if I just suck it up and pay? I don't have any catalic converters if that hurts it.

Black_05f150

Here's my truck

Cameron Allen

How many miles do you have ? It should not be that awful. Mine is just a single cab, but I get 23 give or take on the highway. You can help the problem buy trying several things, if you haven't thought about them. I personally reccommend Lucas Complete fuel system cleaner. Just dump it in the gas tank when it's low.




Cleaning your MAF sensor with the appropriate cleaner or CRC electric cleaner. can help, as well as cleaning the throttle body really well with throttle body cleaner (don't use carb and choke cleaner) they say it can eat the protective coating off an electric throttle body.

I'd also suggest maybe sea foaming through the PCV valve hose, some guys may tell you not to.

Cleaner your air filter, and change your fuel filter. Use a good quality gasoline.

Maybe somebody else can add something. All of these are common culprits.

ford4wd08

Why do you not have cats might I ask?

Black_05f150

I took them off do it would be louder

ford4wd08

I'm going to say that isn't helping. Throwing any codes? Any CEL?

Lenn

No cats= the truck is probably running pig rich. Your truck is probably not even burning some of the fuel you've paid your hard earned money for... its just throwing it out the exhaust... unused... unloved... uncaringly. Its been covered many times before, unless you spend some potentially serious money trying to compensate for the lack of cats, by removing them you essentially reduce backpressure, horsepower, and fuel economy just to accomplish a different sound.

Put your cats back in and watch your fuel economy go back up.

Especial86

iTrader: (1)

Get a tuner... SCT or an Edge.... They will give you more power, better shifts and will recalibrate your speedo for your tires...

Sea foam in your PCV is a good idea, but it will only clean the PCV itself unless you squirt deep creep in where the PCV meets the throttle body...

Mod (Ret.)

And the 35's are not helping the MPG either. A taller, heavier tire does not help out.

Gotta pay the piper if you want to play. And as Lenn mentioned, no cats are most likely throwing a code, causing a rich condition. Are the back exhaust tips sooty?

Not to mention a federal law has been broken. Forget your local laws; if you get caught driving, or selling the truck without cats, you'll get a hefty fine thrown at you.

Reeds FX4

I wouldn't be too concerned about getting caught. More Mustangs guys do it than not and I've never heard about someone getting fined. More often than not inspections catch it and make them fix it before failing them.

As for the MPGs, it could be the result of a lot of things. When was the last tune up? Have you done plugs and filters lately? Tires inflated enough? CEL on?