I can't beleive this!!!???
I got a 95 5-speed, I set the cruise to anywhere from 69-75mph, and the *BEST* that I have EVER seen on the highway was about 25.5MPG!
I Now have new motorcraft plats and jacobs wires, the plugs are gapped to .035", My highway mileage has returned to about 25mpg in warm (above freezing weather).
In the city the *BEST* mileage that I have EVER seen was 20mpg (but that was really really nursing it with people passing and flashing me). I usually average 17-18mpg.
The worst I ever saw in the city was 14.4mpg, that week I had to floor it alot (had to pass snotty BMW owners and teach a few riceboys lessons)
The WORST I ever saw on the highway was 19.5mpg in 0' F weather, however, that was before I changed the plugs. So I would like to see what the REAL mileage drop is with good plugs.
Would I get better economy with a better flowing exhaust (provided I could keep my foot out of it)?
Or would the loss of low end cause me to push harder on the gas thus negating any mileage gain?
Quite honestly with these gas prices, I would commit 1st degree murder to get 29mpg on the highway. And I would commit international genocide to get the 40mpg that Fonzanoon quoted...
-Deep6