All ActivityMost RecentMost LikesSolutionsRe: Need Advice on E450 Engine ModThank You for all the good advice. I think we are going to stick with the stock filter and no cold air intake. Save our money & put it in the tank & go motorcycle racing :)Need Advice on E450 Engine ModI was reading up on a K&N website about a cold air intake system for my E450 v10 Class C motor home. They said "You could get 17.5 horsepower gain & 22 ft lbs of torque & a small increase of gas millage." I was wondering if anyone has done this to their motor home or is it even worth the cost? Any advice would greatly be appreciated. :@