Re: Howell TBI MPG?
I have no idea what my mileage is now or what it was. My Jeep doesn't get out of the garage much and when it does it's usually in low range. I bought Howell's EFI to get rid of the stalling, hard starting, and other quirks of the carb. Adding the kit fulfilled everything I had expected of it and then some. Granted it is expensive and a 4.0 swap may have been cheaper, but you can't beat the ease of installing this kit. Now I know that when I point the nose up a hill or get off camber the engine will keep running. I also know that it won't puke around when I go from 6,000 feet to 11,000. It has to get better gas mileage as the emissions levels plummeted with the install. Hopefully someone else can give you hard numbers to look at.
'75 CJ5,258 w/Howell EFI,T18a,4.27's,33's,On-board air,Warn 8274