Welcome!

At PERFORMANCE UNLIMITED, we are constantly testing new products for the Cummins,Powerstroke, Duramax and other diesel engines. Our Goal is higher horsepower, lower exhaust temperatures, and safer boost limits with the most useable power. Our specialty is new model diesels. With computer controlled diesels, horsepower is only minutes away and can then be taken back to stock in even less time.

If you don't see what you are looking for, please drop us a line. We want to be able to competitively offer you any product you are looking for.

Online Product Catalog

We have hundreds of parts available online!  To start browsing, simply click on a product category on the left side of the page.  Products are constantly being added to our online catalog.  If you don't see what you're looking for, please let us know.

Be sure to checkout our downloads page for product information and installation manuals.

What's New

Since our web site is still under construction, please excuse any discrepancies, errors or other missing items as you browse or shop. If you find any problems that are preventing you from correctly viewing a page or a part from our on-line catalog, please contact the webmaster via e-mail at webmaster@dieselchips.com.