Discussion Starter · #1 ·
Hey I put a brand new ATS wastegated turbo 3 inch downpipe to 4inch exhaust on my 93 7.3 idi. I have lots of power now with only a haze of smoke under acceleration, but my fuel milage has gone from preturbo 15-16 to somewhere around 10-11 after installing turbo and turning up pump 2 turns. What are you guys getting with your turboed 7.3 idi. Any suggestions as to why the big drop. I know that you dump more fuel to get power you lose some milage, but I didn't think it would be that bad, and Banks sidewinder kit says you should actually get a 2-3 mpg increase.