[larry arizona]

I am looking for increased MPG on a 5.3L GMC Sierra. Currently have a aftermarket tune (wait4meperformance) and my MPG is much improved but I am required to run 93 to get the increased MPG due to the type of timing ranges in this tune (still a $$$ savings in the long run) . I am curious if W/M injection will further increase MPG and allow me to use 87 octane instead.

If so, what kit do I need and what else do I have to do to the tune?

HP and TQ increase would only be an added benefit to me. I am most interested in MPG.

[dvldoc]

You would need the universal stage 2 kit, with a D02 nozzle, or you can use a DO1 if you want to run a higher percentage alcohol and want to save on consumption. This will allow you to have around 100 octane on demand, plus the cleaning effect and lower engine operation temps are also a bonus and you can get full timing even on the hottest day or under heavy load. I would recommend using the MAF splitter to remote mount the IAT sensor so the alcohol sprays before it so the computer sees the temp drop.

[larry arizona]

So what is the typical MPG increase for W/M injection on a stock normally aspirated application?

[dvldoc]

Thats kinda hard to say, it depends on your driving style and if your doing all the other things, like proper tire inflation, ect. But adding 15hp can give you around 10% better fuel economy. With added timing this is where you will see the majority of your hp gain using the kit.

The cost you save just using 87 over 93 will be worth it in itself.