do any of the chips work or are they just another scam. I have an 03 H2 and have talked to a couple of other owners. One told me that the chips help mileage and another told me they are garbage. Any help? thanks

 

I don't know about chips I got my EC flashed with a tune through EFI live I've noticed about a 2mpg increase in mileage.

 

Have you noticed any other benefits.
Chris

 

With the H2 there are more options as far as a supercharger or a better exhaust which will help out in the long run. More expensive but worth it in my opinion. I have tried chips with other vehicles and it seems that getting the PCM tuned or flashed to your needs and wants is the way to go