With my 99 dodge I drove it, and still do drive it, an average of 15000 per year. No I am not doing that much now, but for the sake of example I will go with it.
That is 15k divided by 365 days =41 miles per day
Times 10 days is 410 mile, about an average tank full.
@ 13 mpg =31.5 gals
@ 15 mpg = 27.3 gals to fill up, which is a difference of 4.2 gals. @ $3.50 per gallon, = $14.70 in 10 days. Thats a savings of $1.47 per day, So if you spend $2000, like I have done. it would only take you. 1360 days, or almost 4 years. That is a long time for total payback, but that is if you are only getting 2 mpg increase and only drive 15000 miles per year. I know a lot of people who drive double that and mostly highway that are saying they are seeing increases of 4-5 mpg. Sooooo
410 miles at 18 mpg is 22 gals for a savings of 9.5 gallons per tankfull. At $3.5 is $33.25 savings in 10 days or almost $100 a month. There ya have it.
I guess if you don't drive it much, it isn't worth it. I like not having excessive EGTs,,,, I blocked the EGR also, And tons of Soot going into my engine too. So for me there is more payoff than just at the pump. I have invested a lot of money into buying this truck and want it to last like my 99 has. You have to consider all the aspects of it.
More for you to ponder while you wait for your new truck.
And BTW. Welcome.:cheer: