Performance parts usually do not help fuel mileage. A cold air intake can help a little bit, but make sure to keep the oxygen sensor clean as some filters can dirty it. You could also look into purchasing a Banks performance kit if it is available for your truck.
There are plenty of performance options for your diesel that increase performance and fuel economy. BULLY DOG is probably the biggest name in diesel upgrades. Visit their website at www.bullydog.com
Diesel Power Products, Parley Diesel Performance and Rffraff Diesel are all good websites that sell Powerstroke Performance Parts online. If you are unsure about the websites eBay also sells it through one of its individuals stores.
Owners of vehicles with diesel engines looking for high performances parts can go to a couple of quality sites on the web to purchase them. These sites are Advanced Diesel and Pure Diesel Power.
A Bully Dog performance chip is a product for automobiles. Bully Dog are a company specialising in car and motor parts, and the chip is for gas and diesel performance.
around 1249 mileage you unlock engine swap and the level 9 engine, the rest of the parts are unlocked when you beat certain bosses or level up.
Diesel performance products for air intake can be purchased at any local major retail store that sells engine parts. In Canada these products can be purchased at Canadian Tire.
go to www.moranav6racing.com they specialize in real muscle performance parts for the 3.8 ford v6
value analysis
Two good parts for a 1998 Dodge 1500 with a 5.9 liter engine that increase power and mileage are high performance air and fuel filters.
well you go buy new parts and fix it up how else
Two websites I found right off the bat that sell performance upgrades for diesels are: 1.- www.dieselpowerproducts.com - dealing strictly with diesel engines in trucks. 2.- www.xtremediesel.com - sells parts for trucks and diesel cars, suck as VW and Mercedes.
How much money do you want to spend? Mustangs are one of the top cars for aftermarket performance parts. You can do things as simple as changing the exhaust all the way up to replacing the engine with a high performance create motor.