I'm not sure on the %. I just reset my trip odometer every time I fill up and keep track like that. My goal is to try to get 1000 or so Km out of a tank of gas from this old truck. A friend of mine has a 05 f150 and he gets about 800km a tank on his truck but I'm sure there's a bigger fuel tank on the newer f150 models. I Live in Oshawa Ontario
Another Ford guy in a GM town...I'm just across the lake in St Cath.
Ok, get yourself a notebook and a pencil (pens freeze in the truck in winter) and start keeping track of how many litres of fuel you pump, and the odometer reading when you pump. Or, write it on your dated receipts at the gas station. You'll get a more accurate accounting this way.
Yes, fuel economy sucks when it's cold. Mine also varies by brand of gas. I find I get the best from Pioneer. Husky too. Both are Suncor companies - coincidence? But not Petro Canada...additives/formulas!
MPG Remedy helps...
Yup, they're good too...and so is whatever Costco pumps.
Seriously, read up on MPG Remedy and save yourself some $ with each fill. I was a skeptic, but a few tanksful changed my mind...also, regap your plugs.
What year/engine is your f150?
The engine is an 03 5.4. I had the engine replace back in summer. There's 140000 km on it now. When it was done I had all new plugs, gasket and sensors replaced on it as well. I also put a set of headman headers put on it too cuz the stock one were done, plus some time this year I'm planing on doing a true dual exhaust system on my truck too
Sounds like you can get plenty of air IN, and have done what you can to make the exhaust get out quickly/easily...now, what about spark, compression, vacuum, combustion??? Don't simply throw parts at this and expect results. The beauty of the groove is that economy can be realized without too much money.
Slow down turbo! Are you SURE you know how your engine works? How/what/why the sensors report to the ECU?
Read this forum, Google things for confirmation, build a picture in your head and start tweaking.
I know my mechanic that put the new engine, gapped the plugs to manufacture specs and as far as the O2 sensors go, I'm sure putting new ones one when I do the exhaust will help big time. I'll just been waiting to do all that in one shot. All the vacuum lines were replaced too