Air filter
My isl 425 in my Newmar is not getting enough air, the air gauge back nx to engine almost closes up after driving 100 miles with a new air filter in it an I'm just getting 6.2 mpg I'm thinking about d...
Forum Discussion
larry cad wrote:
I researched and discovered that the next size up filter was easily adapted to my engine. I did the mod and:
1. the gage stays where it should be with a new filter.
2. I got about 1.5 mpg increase in mileage
3. I "notice" better pull on hills.
Similar experience except I didn't see a MPG change.
It came with a 1200CFM filter and I installed a 1500CFM filter. It runs the mountains much better.
EcoLite
