Fuel 19lbs EV6 fuel injectors, what fuel pressure???
- Thread starter PonyGTrider
- Start date
If that were true then one of two things should happen:
You throw a code for running rich.
The EEC leans out the fuel mixture.
Yeah I know what you’re saying… I’m running on a budget and have to try anything that is at my disposal.
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What brand and/or where did you buy the injectors? Where did you get the MAF and what brand is it? It's also possible the ECU has an issue. Like has been said, if the car is running pig rich then you should get a code indicating this.
The injectors are Ford 0 280 255 700 F4SE-A1B and were new takeoff
The MAF is Ford '95 mustang GT 70mm tube and sensor F2VF-12B579-AA
As far as the ECU, well I used an A9L and A9P with the same results. I doubt they both bad I bought the A9P freshly rebuilt
again the awfully strange thing is that if it was running pig rich the plugs should be all carbonned up but they're not... And there are no error codes.
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I know you tried the stock meter housing and electronics and the current housing and electronics. Have you cleaned the MAF element?
Blown88GT
Founding Member
I have to ask, what's the gearing and tire size (unless this has already been given 
) seems to me you checked speedometer with a GPS but is the odometer accurate?
) seems to me you checked speedometer with a GPS but is the odometer accurate?
25’s ha, you think that could help? Perhaps better combustion? If you don’t mind what would be the next heat range of FR5’s?
If the car is on level ground and in Neutral, can you easily push the car?
As in, one hand on the rear and just give it a push and it rolls?
Or do you have to put both hands on the car and really give a shove to get it to move?
If the car is all bound up, it will take a lot more energy to move compared to a car that has a lot less rolling resistance.
Oh, and post a pic of the car so we can see how aero clean it is.
As in, one hand on the rear and just give it a push and it rolls?
Or do you have to put both hands on the car and really give a shove to get it to move?
If the car is all bound up, it will take a lot more energy to move compared to a car that has a lot less rolling resistance.
Oh, and post a pic of the car so we can see how aero clean it is.
Absolutely, the car is free no dragging brakes and it can be easily moved/rolled with one hand
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How do you calculate fuel mileage?
Have you used the same fuel station and the same fuel nozzle in back to back tests?
Have you used the same fuel station and the same fuel nozzle in back to back tests?
Oh absolutely, very often I spray it with MAF cleaner, and often clean the IAT too. Also test the ECT sensor so often and TPS is at 0.99 V
Yes try to be as consistent as possible, same pump same station, same everything
None of this adds up.
I have an 01' F250 Crew Cab 4X4 SuperDuty with the 6.8L V-10 with 33" mud and snows and I get 12-13 mpg highway driving.
Truck weighs 7,800 lbs empty.
I tow my 24' triple axle trailer at 10K lbs and I get 8-9 mpg.
The amount of fuel pouring through that 302 to only get 9 mpg CAN NOT happen at part throttle cruise without fouling the spark plugs.
I have an 01' F250 Crew Cab 4X4 SuperDuty with the 6.8L V-10 with 33" mud and snows and I get 12-13 mpg highway driving.
Truck weighs 7,800 lbs empty.
I tow my 24' triple axle trailer at 10K lbs and I get 8-9 mpg.
The amount of fuel pouring through that 302 to only get 9 mpg CAN NOT happen at part throttle cruise without fouling the spark plugs.
Yeah... I'm getting the point where I'm waiting for the punch-line. 
Narrow band O2 sensors are dumb creatures.
They switch between:
off-scale high
off-scale low
unswitched
Too much time in either mode, throws a code.
No signal, throws a code.
So, either this car is running rich as eff and the EEC is disregarding the inputs (arbitrarily on its own) or gas is mysteriously returning to the mother ship.
I mean... I've seen poorly matched combos suffer mileage issues but this seems to be pretty extreme.
Do you have a trunk full of turbos or nitrous oxide bottles or something getting you to 1000 HP? LoL
When I first installed my Kenne Bell onto the (then) new stroker combo, it ran. 42 lb injectors and a MAF calibrated for 42s. It ran like
actually. I drove it over the Allegheny mountains and got [horrible] fuel mileage but I mean, I could definitely tell it wasn't happy.
A tune brought the whole thing around. Fuel mileage --and-- drivability were drastically improved.
Your story though:
"I got no codes, it runs and drives great, I'm not leaking anything, it doesn't stumble, but if I rev it between gas stations, I'm going to need a tow."
I paraphrased.
Makes no sense
Out of curiosity, would you describe your fuel system from tank to injector?
Narrow band O2 sensors are dumb creatures.
They switch between:
off-scale high
off-scale low
unswitched
Too much time in either mode, throws a code.
No signal, throws a code.
So, either this car is running rich as eff and the EEC is disregarding the inputs (arbitrarily on its own) or gas is mysteriously returning to the mother ship.
I mean... I've seen poorly matched combos suffer mileage issues but this seems to be pretty extreme.
Do you have a trunk full of turbos or nitrous oxide bottles or something getting you to 1000 HP? LoL
When I first installed my Kenne Bell onto the (then) new stroker combo, it ran. 42 lb injectors and a MAF calibrated for 42s. It ran like
actually. I drove it over the Allegheny mountains and got [horrible] fuel mileage but I mean, I could definitely tell it wasn't happy.A tune brought the whole thing around. Fuel mileage --and-- drivability were drastically improved.
Your story though:
"I got no codes, it runs and drives great, I'm not leaking anything, it doesn't stumble, but if I rev it between gas stations, I'm going to need a tow."
I paraphrased.
Makes no sense
Out of curiosity, would you describe your fuel system from tank to injector?
Here is the whole recipe: I have 3.55 gears,T-5, 245-45-17 @33 psi all around, Detroit truetrac differential, 31 splines Moser axles, T5 WC Z specs with 0.63 overdrive, 7 tooth drive gear (Yellow), and 20 tooth Speedo gear (Black)I have to ask, what's the gearing and tire size (unless this has already been given
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