Haven’t been online for a bit. Just looking to upgrade my MPG’S on my 1998 ¾ 4x4 6.5 turbo. It has stock tires and 4.10 gearing. I get 15-18 mpg normally. I am not worried about towing power. I tried 4 inch exhaust, mpg’s went down! Then necked the tail pipe down to 1 ¾ I.D. , mpg’s back up to normal. I was thinking of an injector upgrade, heard ssd’s fuel miser’s work great, some say work awful. I need to change a few, they dribble. Also was looking for an aftercooler but I have found none. Not a big deal, I work for a heat exchanger manufacture, and can make one. Mostly what I am searching for is either 1) a programmer that I can change, or 2) have my computer reflashed. Also just curious if I manually set my waste gate to give more boost, will that trigger a problem code since throttle position will not be changing? My thoughts on more turbo boost is you effectively raise the compression ratio, and not increase fuel…. Your thoughts?

 

For one stay away from SSD injectors i had them in my truck not worth the money had to replace them in less then 6 mouths that all have say

What code are you getting

I have done lot upgrades to my truck all i got was better milages right now getting 21 miles to gal and it is 3500 with 4:10s

 

No codes. I havn't messed with it yet. I have some oil pressure problems. Either is a bad oil filter, or pressure sending unit. Each time i start it it takes awhile for the gauge to show pressure. I am going to maybe have my computer flashed, maybe set timing ahead a bit. Not sure.... Will have to keep researching here, see what i find. But any other tips are appreciated!!