do they really work (help)

[yelwinger]

Do any of these mod's really work to improve mileage? With the price of diesel fuel I would like to improve my mileage. My problem is the truck is still under warantty and the dealer said any mod's will void it. Some of the mod's are kind of pricey.You would need to drive a lot of miles to recoup your investment. I have had thoughts of going back to gas but still if you way the facts I am still doing better mileage than I have ever did with gas truck. Getting about 14.5 around town best I got was 11 to 12, when summer blend come around I hope to improve that. I love my truck and would hate to sell it but fuel is killing me so would gas, need to get the Yellow Goldwing running.

[moore20017.3]

I am not to familiar with the 6.0.

All the mods I have put on my 7.3, it gets the same if not slightly better now at 250,000 miles than it did at 50,000. The larger turbo in my opinion lets it exhale easier. Biggest intake and lowest amount of restriction on exhaust. Then you will have to fight keeping your foot out of it.

It is prolly the same for the 6.0s

[dhanna6powerstroke]

The dealer doesn't have the authority to void the warranty just because of mods. The only way the warranty could be voided is if something you add is the direct cause of the fialed part or parts. If you want to get a little better mileage without the risks of warranty problems, install a chip such as the edge, banks or bully dog. These do not leave a footprint on the PCM and is not detectable if you remove it for warranty repairs. I know most guys don't like the chips mentioned above, but if you use it for mileage and just to have a little bit more power you won't hurt anything.