Thread: MPG help

Midgrade gas.

cool it on the pedal.

get a mpg tune.

how many miles are on your car? if theres alot then doing a tuneup might help some.

Should be able to get 26+ in mixed driving, and over 30 on highway/interstate. Exhaust helps quite a bit (headers flow the best) and so does a cheap intake.


Best thing isn't just keeping your foot out of it, it's driving smart.
For example: Going down a hill, neutral that **** up. Know there's a stop sign up ahead, neutral and coast. Don't accelerate hard. And most importantly, keep a STEADY foot. Even minor changes in throttle have an effect on mileage.

Oh, and make sure you're tire pressure is correct, dropping a few psi will drop mileage.

Originally Posted by machinegunsquid

Should be able to get 26+ in mixed driving, and over 30 on highway/interstate. Exhaust helps quite a bit (headers flow the best) and so does a cheap intake.


Best thing isn't just keeping your foot out of it, it's driving smart.
For example: Going down a hill, neutral that **** up. Know there's a stop sign up ahead, neutral and coast. Don't accelerate hard. And most importantly, keep a STEADY foot. Even minor changes in throttle have an effect on mileage.

Bad idea on the neutral part.

Applying the forward band on and off like that is just going to make it wear faster and give it a better chance at becoming weak and breaking.

Depending on your speed the car will by itself go into a decel mode and pretty much shut off fuel, so just let the car do everything for you. And drive the posted limit.

Plugs, wires, air filter, new PCV, clean the throttle body and MAF sensor.

Normal stuff.

Originally Posted by machinegunsquid

Should be able to get 26+ in mixed driving, and over 30 on highway/interstate. Exhaust helps quite a bit (headers flow the best) and so does a cheap intake.


Best thing isn't just keeping your foot out of it, it's driving smart.
For example: Going down a hill, neutral that **** up. Know there's a stop sign up ahead, neutral and coast. Don't accelerate hard. And most importantly, keep a STEADY foot. Even minor changes in throttle have an effect on mileage.

Keeping it in gear actually helps more with fuel mileage than dropping it in neutral. When decelling/engine braking the injectors shut down.

Also mid grade gas will not help with fuel mileage unless he is seeing knock. If he is not seeing knock midgrade will cause a reduction in fuel mileage.

I guarantee he's seeing knock on regular gas.

aeroforce or hpt scan to back up this claim?

Originally Posted by Nixon

I guarantee he's seeing knock on regular gas.

Originally Posted by Nixon

aeroforce or hpt scan to back up this claim?

This thread is about MPG's, not once did he say anything about going Wide Open Throttle.

He wont see any KR, just bumming around town or on the freeway. IF he indeed does go WOT, then yes he would see some KR, because he is stock. He's just asking for better MPG idea's.

Dropping it in neutral makes the RPMs rise a little bit not to mention all of the other issues that people posted. Get a tune up, possibly some flow mods, a tune if you have cash, and keep REAL light on the gas.

headers will help out a couple mpg

Any sort of intake will help. A simple 9" cone filter is the cheapest/easiest way. Then headers to get rid of the exhaust restrictions, and you should see quite a difference in mpg.

Going back to the original post, here are the big items to look at.

1. Spark plugs – if you are running on the stock plugs (and you probably are) it is time to change them. IMHO the best plug for you is the NGK OE laser iridium or the NGK iridium IX, the best part is once you change them you should never have to bother with them again.
   
2. Front oxygen sensor-if your car has over 120k replace it. This is the most important fuel related sensor in your car. A slow/old O2 sensor can destroy your fuel economy.
   
3. Don’t idle your car if at all possible. "Warming" your car up, drive-thrus, any idling eats up gas unnecessary. Just remember idling = zero mpg
   
4. Proper tire pressure = the very minimum pressure you should ever run is 30psi, and even then only for track day. IMHO the best pressure to run for improved handling and mpg is ~33-35psi.
   
5. Dead weight-get rid of anything in your car you don’t expect to use that day. And if you feel lucky that could mean your spare tire.
   
6. Drive smooth and roughly the speed limit, use cruise when ever practicable, use the A/C when you need to otherwise crack a window.