To be honest I never asked about factory warranty.
I've always been under the assumption that if you mod it good bye warranty. I'll fire off that email and ask.
*Update*
Technically they can not void your warranty just by adding an aftermarket product though if something happens to the motor or drivetrain, they can say it was from the supercharger. We are finalizing the details on an optional warranty program now for a 3yr/36k mile, 5yr/60k mile and 5yr/100k mile powertrain warranty that will range from $275 to $775 addition cost but must be installed by an authorized dealer.
Mike Malicoat
Whipple Superchargers
Ph. 559-442-1261
Fax. 559-442-4153
I think that warranty is very well worth the price. Hell 5y/100k for $775. I'm in with both feet jumping!