If you want results, contact the FTC (Federal Trade Commission) and let them know of your situation and which dealer it is with. The FTC frowns on warranty denials due to aftermarket parts installations and they swing a very large bat. They would be than happy to assist in a remedy for your situation. Here is a clip and aome links from our site:
The installation of Vortech products, except those defined as "for racing use only" do not void the
new vehicle warranty nor should they cause the vehicle to fail emissions tests. Notify the vehicle
manufacturer if either of these situations occur. If the vehicle manufacturer fails to honor
emission/warranty claims, you may contact the Environmental Protection Agency (EPA) at (202)
260-2080 or
www.epa.gov. If federal warranty protection is denied, call the Federal Trade
Commission (FTC) at (202) 326-3128 or
www.ftc.gov. Additional information is available at the
Specialty Equipment Market Association (SEMA) website
www.sema.org.
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Silver '00 Supercab F250XLT SWB 2wd w/ 10psi Vortech Supercharged & aftercooled V10, JBA, Bassani, Fabtech, SwayAway, Centerline, BFG, Autometer.........423RWHP, 13.98@101mph
www.vortechsuperchargers.com