I have a 1999 S-10 X cab with 4.3l. at.4x4.What can I do to get more power & better gas mileage?Douring the week I get around 15mpg.,but when I pull a 6x8 trailer,I get 11mpg.

 

I purchased a Scangauge II, it gives me instant feedback on most systems including instant MPG and average MPG. I have used it to teach me how to improve my mileage on my '96 S10 pickup w/2.2 and auto. Grant it, it's a completely different setup but, you can learn how to improve your driving habits. I now do everything possible to get the tranny into high gear asap. I don't drag race to the stop sign and I watch ahead to anticipate lights, standing at a stoplight is wasteful, accelerating from 0 is wasteful and using the throttle all the way to a stop is wasteful. Almost any vehicle can be improved considerably this way. Slightly over inflating tires can add 5% easily. Go to cleanmpg.com to learn more. My 96 S10 2 WD pickup has gotten tanks of 27 mpg and I can get over 30 mpg highway by doing the speedlimit and staying in the right lane as much as possible.
Hope this helps, you are the best "mod".

 

Would like some sugestions on what ad-ons or what I can do to my stock 4.3l to have a little extra to pull my 5x10 trailer & UTV.