My motorhome is a 1995 Class-C Ford E-350 with a 460 EFI engine...I have upgraded the exhaust with Thorley headers following the dreaded exhaust leaks and snapped bolts...I am now ready to upgrade wit...
I made one using a floor vent from a home a/c heat unit . wire tied to my grill , and ran dryer vent hose to my air filter . Can not tell a difference . Banks said theirs was good for about half a mile per gallon . This one cost me about $12 . So I could throw it away and not lose anything .