Guys i've been having a problem lately of bad gas mileage. Its been as low as ~20mpg over a tank, and no higher than 28-29 and that was all highway. Usually my car makes in the mid 30's, high 30's on highway trips.
Fuel filter is recently changed, plugs and oil about 3 weeks ago (old plugs looked ok, just had carbon buildup on the outer metal like the threads), my A/FR's seem normal on my LC1, WOT is around 13:1 all the way across and cruise is between 13.5:1 under load to 16:1 in very light load.
I don't smell any gas, and I can't find any leaks under the hood, BUT I am losing pressure rather quickly once I key the car on w/o starting it. Its a stock pump, RC 320 injectors, and AEM FPR on stock rail. B&M pressure gauge on the filter is where I'm seeing pressure fall from 45 to 20 within 10-15 seconds, then slows.
Fuel filter is recently changed, plugs and oil about 3 weeks ago (old plugs looked ok, just had carbon buildup on the outer metal like the threads), my A/FR's seem normal on my LC1, WOT is around 13:1 all the way across and cruise is between 13.5:1 under load to 16:1 in very light load.
I don't smell any gas, and I can't find any leaks under the hood, BUT I am losing pressure rather quickly once I key the car on w/o starting it. Its a stock pump, RC 320 injectors, and AEM FPR on stock rail. B&M pressure gauge on the filter is where I'm seeing pressure fall from 45 to 20 within 10-15 seconds, then slows.