I have never ran leaded gas...

 

get it to a tuner and see if they can see anything wrong??? kind of hard to guess other than the fact you are getting bad mileage... boost logs? afr? other sensor readings? tail pipe sniffer? maf problem?

 

are you at Bella vista with a 9RS white?
I am just around you stop by at 4211

Jon

 

Keep us updated

I'm sure there're many people who's got a tatrix cable who can pull some log and check what's wrong

 

I have found threads like this., but i don't know what the problem was. I suppose you gaged your consumption correctly. The O2 sensor; I read a lot, but the Check engine light will come on, unless it's intermittently faulty. I have experience a problem like this. The problem was a samll fuel leak from a fuel line. I would check everwhere that fuel would be enter into the engine, but visual and sniffing around. Again the leak could be very small. Like the mechanic say, it may have to be worsen before you could see to reapair it. Good like!

 

Don't use your A/C. I know Las Vegas is hot, but A/C kills the gas. You have to drive really really slow.

Change the oil, inflate your tires, tuneup, & lighten your car.

 

back from the dead!!!

my last 2 tanks i have only gotten 120 to the tank, the weather has changed drastically htough. does the cold weather really affect MPG that bad? mods in sig.

and ideas would help! thank you

 

Mine just got better. Went from 16 on a few tanks to 19 on the last tank. It might be that random awesome tank of gas but I'm hoping it has to do with the giant boost leak I fixed. I would start there because its a probable cause and free to check and fix.

 

ill be doing a leak test tomorow afternoon, but iv recently done one last week and nothing. just wondering if others had bad gas milieage due to other thinks other than boostleak

 

No boost leaks, and I'm on speed density even if I had boost leak it wouldn't run rich it would just run normal 14.7 at cruise and idle. Any help would be great fully appreciated!!!