XIED®
EFI Mangement - Simplified
VIED®
EFI Management - For Every Rider

AF-XIED®
EFI Management - Made Intelligent

Not every Rider needs complex and expensive engine tuners to meet their needs. Most Riders with stock bikes or those making exhaust and/or air cleaner upgrades just want ensure their engine runs properly.
Nightrider's Patented XIED technology is designed to work with OEM closed-loop ECM's to maintain or improve fuel mixtures.

The Nightrider.com Motorcycle Performance Guide provides a reference guide and forum for Harley-Davidson and other motorcycle high performance engine modifications. From simple upgrades to hot street performance or drag racing, there is something here for you when you need to 'wrench' your bike.