maybe2fast

First and final, I will never...ever drive a Honda even for MPG

I bought my 2nd XJ on the 4th of July and have since done some maintenance and mods which I will list. Its a 3in lifted 98 on 31x10.5 General Grabbers
I started keeping track of my MPG with the FUELLY app on my android. It has been very consistent.

MODS and Maint.
IAC moved to box
Full tune up (cap,rotor,wires and champ plugs)
703 injectors (then cleaned them at my shop, runs on cleaner)
it has a CHOKEmaster muffler (nickname from F-body world)
I reset my PCM when I got the truck after the injectors
Airhog filter and extra air inlet holes in the box
Home ported TB
MOBIL1 oil change
ATF changed
TC fluid changed
electric fan (mechanical removed)
2 row radiator

I think that is it for what the MPG represent in the sig link


Now, I have a banks look a like header and a 99+ intake going on hopefully this weekend. Since with endless searching no one reports anything other than a small post that says "yeah its better"

I will be reporting on the MPG differences that these two components offer

Current before the 99+ and Header is:

16.6 Running MPG Avg
16 Fuel-Ups
17.8 Best MPG
4,406.6 Miles Tracked

I drive 70 miles a day with close to 60 of that being expressway

maybe2fast

I want to do the swap before the winter gas hits the tanks and messes with my numbers

NorCalJeep

Wish i could get 16 mpg. You get double my mileage. Always been a truck guy and always driven something that doesn't get over 12 mpg( My last vehicle was a dodge ram).

91 limited owner

About 6 years ago, I picked up a 1994 Dodge spirit for $500. 4 banger front wheel drive. Which I been using for my work (and errands) car. I figured I save $2000-$3000 a year in gas money alone, over driving My XJ daily. Also saved putting on the added mileage on the XJ. Which in part is why, I now have a 21 year old Cherokee, With only 71,000 miles on it. I'm glad I bought that beater Dodge. It has payed for it self ten fold. And still is. You may try to solve your terrible gas millage problem, anyway you wish. That was my answer. If I could find an old Honda CRX, I would buy it in a Heartbeat.

maybe2fast

i also want to add about my method of speedo correction. I add 5% to my mileage. Stock gear. 3-4mph off at 70mph

nskjeep886

92 2 door sport 3" with 33s I get 8 to 10 mpg...I have no clue what I get in the trails but its to hard to figure out cuz im 90% sure my gage is off...might have to get that app

maybe2fast

its free (fuelly)

thatXJguy

99 6.5" lift with 33's and 15.8MPG.

nskjeep886

Are you regeard or something or is my 250,000 motor just not up to par anymore lol

DieselD

I have a 99 4.0 aw4 231. I have a spectre CAI (cowl), ACCEL tune up kit, Thrush glasspack, and replacement tailpipe not mandrel bent 202k miles. Stock height and tires. I avg 17 mpg with mixed driving and a relatively heavy foot. Recently took a trip to VA Beach. I avg 23 mpg and peaked at 26.8 mpg. I was shocked. That was also with a shorted out post cat O2.

My 91 when it was on the road I avg 13 mpg. I could get 14 if I was a grandma with it. It had a 4" lift and 31" MTs, 703 injectors, glass pack and 314k miles.

thatXJguy

I have 3:55 stock gears. Maybe you need new injectors?

nskjeep886

Yea I've been told that...how hard is it to do...I feel like a dummy asking you cuz im going to search it right after I finish writing this lol

my89xj

Find dukies write up, its so easy.

NorCalJeep

Real easy, just unplug and plug in new ones. I practice at the JY.

maybe2fast

well, didn't work on the Jeep this weekend. So no progress to report