Join Date: Sep 2012
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
How do tuners work?
Can someone explain how Spartan and H&S tuners work?
What do they change about how the engines operate? I ask because my truck will not idle worth a crap, after reaching normal operating temp, if I tune higher than 150hp. 150 and lower and it idles smooth as silk, over that and it acts like a clogged fuel filter on a gasser. I love the performance and fuel economy with the 275EL tune compared to the 150EL. I am really disappointed that I am limited to the lower tunes. From what I have read mine is one of many 6.4's that is doing this.
If I knew what the tuner changes to increase the HP that should make it easier to narrow down where the problem is.