Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Skeptical of "blade" exaust tip FE / emissions claims

diesel_john · 04-27-2008, 08:31 PM

spring loaded flapper

Oh, you mean like this one on my F250.

The jury is still out on any MPG improvement.

04-27-2008, 08:31 PM	#11 (permalink)
diesel_john MP$ Join Date: Jan 2008 Location: SW Ohio Posts: 595 Thanks: 5 Thanked 19 Times in 14 Posts	spring loaded flapper Oh, you mean like this one on my F250. The jury is still out on any MPG improvement. Last edited by diesel_john; 05-27-2008 at 12:44 AM..