12VSWAP

I have 1990 12V 5.9L Cummins and was wanting to know what I could do to increase power and get better mileage. I get about 16-18mpg in the city and maybe 21mpg on the highway. I'm new to diesels, but I've heard and read articles that you can boost power while increasing fuel economy.

What's the best way to do with with an engine like the one I have? How far can you push it? Is 30mpg highway a reasonable goal?

Thanks in advance for your help!

Michael

d-rod

don't know about thirty but never know. you prob have better luck on first gen. page getting some help on your year of truck.

Midnite

30 mpg isn't a reasonable goal, but if you're getting 21 hwy now, I would think you could fairly easily hit 22-23. Much more than that would probably be difficult.

I agree with d-rod. You should post this in the 1st gen section--you'll get better feedback.

12VSWAP

Thanks. I did yesterday.