Joined
·
258 Posts
I have a 99 CTD 4x4 and had 2 questions.
1. I have a Hypertech Power Programmer III, it has 3 stages and I was curious as to which would give me the best MPG.
2. Do stacks or straight piping the exhaust increase your MPG.
Thanks for any input.
1. I have a Hypertech Power Programmer III, it has 3 stages and I was curious as to which would give me the best MPG.
2. Do stacks or straight piping the exhaust increase your MPG.
Thanks for any input.