i have a 99 eb and I was thinking about getting a performance chip for it. What chip is better, the diablo or the supertuner? Thanks

 

I ment to write the superchip, instead of supertuner...

 

Most prefer the Superchip. I went with their 1715 tuner and love the results.

 

The 1715 tuner is probably your best bet - no permanent modifications, all the benefits of the chip, You can tweak any number of trucks (all your friends will be lining up at your door!) and you get a code scanner to boot.

Can't beat that!

XXL

 

Sorta!

You can install and remove the "program" any time you wish and then install on another vehicle, BUT you cannot install the program on an unlimited # of vehicles at one time. In other words, once the program is installed on a particular vehicle, all the tuner can be used for is code reading on other vehicles.

 

I have a exhaust and intake on my truck, and I am getting horrible gas mileage 8-9mpg. Before I put the intake and exhaust on I was getting like 13mpg. Would the superchip help the mpg? Thanks

 

I don't know how you lost 35% of you mileage by adding what you did (is your foot heavier now?), but a chip won't get it back to where you started. I noticed .5 mpg increase.

 

Actually, based on the numbers we ship, most people do not prefer the Microtuner. Its 50/50. A tuner is great if the only modifications you intend are intakes, exhausts and tire size changes. If plan to do more than a Microtuner won't do the job (it can't be custom coded). Plus Diablo tends to have a bit more power. Both products are great and each has its uses.