So I bought my SRT back in June. The dealer said they put it through inspections and did a tune up on it, oil change, antifreeze, the works. I bet they didn't use the right antifreeze Dodge recommends... But since that day, I'd be lucky if I were to get 200 miles a tank.

I don't boost like crazy when I drive and I tend to stay under 0-5psi when I drive. My car is an 05 with:

Larger Injectors(Which are stock on the 05s)
8MM MSD Wires
Mopar Stage 1 ECU
Short Ram Intake
Greddy Turbo Timer

Is this normal gas mileage for this? 200 miles a tank is almost enough for me to sell this car.

I'm just trying to figure out what I should check or replace to fix this. I pulled out the spark plugs they look to be ok, but they look like the cheap brand NGKs with the V shape.

Any ideas???

 

Anybody???

Do you think a tire under 32psi would cause that much of a decrease in mileage?

 

im getting around 200 miles as well might be the small things like get a new fuel pump.... I dont know my car used to get 280 a tank now im getting only around 200 so me are u are in the same path haha

 

Replace your O2 sensors... that might solve the problem.

Better yet... get a wideband O2 and get a tune. Easily fix these problems

 

Yeah I was thinking about the 02 sensors, but if those started to go bad, wouldn't those throw a code? I also changed out my spark plugs and noticed the gap was waaaaaay off for the amount of boost the car was pushing. I was told also to try that Lucas fuel injector cleaner too.

 

It'll throw a code if its dead/fully broken, but if its off by a bit of voltage it won't throw a code. The computer will think its fine... with your mileage i would say change it and see what happens! Go wideband and get yourself a tune

Have you had your oil sent off for analysis? Do you have a lot of unburnt fuel in your oil? Do you have excess fuel being thrown out the tailpipes when shifting (could soil your O2 sensors)?

 

Have you pulled the plugs to make sure they were changed and gapped correctly? Using a different antifreeze is going to have 0% effect on gas mileage.

 

i noticed a difference when i went from stock pcm to s1, but also i think the fuel gauge only shows 10 gal, not the 3 gal reserve also, so thats still 20 mpg, and 20 mpg isnt bad if you do mostly in town driving, my car probably gets around 20 in the city, and around 30 on the highway. which i never thought was bad, maybe mine wasnt great on gas to begin with lol oh well doesnt matter to me, i like the car too much to get rid of it over 80 miles less per tank.... actually i doubt mine even gets 200 miles to the tank