Can I break my lease? Dealer CAN'T FIX my MPG problem...
Dec 26, 2007, 06:33 AM
#16
I hope they did all the basic stuff (changing plugs/wires/filters) and even checked the O2 sensors. Despite the fact your not throwing a code your sensors could be going out. Mine was having a problem getting going when cold, so I did the rear O2 mod via EcuFlash and the problem went away along with averaging 320 miles to a tank with sensible driving.
Dec 26, 2007, 07:28 AM
#21
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Tune it.
By leaning out the fuel trims and new timing maps, my MPG went up a LOT. I went from averaging 15-17 MPG to around 23-24. That was just with a base tune via Eflash.
By leaning out the fuel trims and new timing maps, my MPG went up a LOT. I went from averaging 15-17 MPG to around 23-24. That was just with a base tune via Eflash.
Dec 26, 2007, 08:05 AM
#24
I just got my Evo filled up yesterday and did my MPG calculation. Took the number of miles driven and divided by the number of gas that I used.... comes out to 19.8mpg. Not too bad. I just drive it to work like 7 miles one way and around town. Light on gas paddle. I would like to floor it but it's not really worth the cops to be at the right place at the right time...
I guess I'll have my days when it comes to summer. Maybe I'll take it to Road America circuit if I can. Anyways, Good Luck on your situation
I guess I'll have my days when it comes to summer. Maybe I'll take it to Road America circuit if I can. Anyways, Good Luck on your situation
Dec 26, 2007, 09:43 AM
#27
On the highway I see 26mpg.
The ECUFLash rear O2 hack disables the CEL for the rear O2. You won't need spark plug foulers to run catless. If you have a CEL due to the rear O2 the car is probably dumping in extra fuel.
Checking the cruise AFR with a wideband would be the first thing to check.
Something as simply as a failed fuel pressure regulator can dick up your MPG.
The ECUFLash rear O2 hack disables the CEL for the rear O2. You won't need spark plug foulers to run catless. If you have a CEL due to the rear O2 the car is probably dumping in extra fuel.
Checking the cruise AFR with a wideband would be the first thing to check.
Something as simply as a failed fuel pressure regulator can dick up your MPG.
Dec 26, 2007, 01:29 PM
#30
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I would think if the car was undriveable and still under warranty if the dealer couldn't fix it you'd have a legitimate case to cancel the lease...but I am fairly sure you couldn't get out it w/o penalty just becuase the gas mileage is BuBitty