Holley HP EFI ECU and Harness Kits 550-602 harley-davidson-exhaust 50-inch Flow FX "straight-through" performance

50-inch Flow FX "straight-through" performance muffler mounts high in the frame rail just behind the factory catalytic converter and bolts up to the factory flange

2002-2009 GMC Yukon 294 CID

00-inch inside diameter slip-fit connections

Notes: This system is for cars with factory exhaust bezels in the rear bumper

Holley HP EFI ECU and Harness Kits 550-602 harley-davidson-exhaust 50-inch Flow FX "straight-through" performanceHP ECU AND HARNESS LS1 & LS6 Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more! Got a stock LS engine? Simply download a base map and you're on your way. Got a turbocharged, nitrous fed LS engine on water meth? This HP EFI kit can control that too! Stop reflashing your factory ECU every time you make a performance modification. Get Holley EFI today!