Cold Air and Ram Air
This page is for diesel mods.
This is your guide to using cold air or rammed air to better the fuel economy on N/A diesels and turbodiesels.
This does not apply to gassers.
Instructions for mod
You have 3 choices to do this mod.
1 Make every thing your self using PVC, rubber sewer line couplers, HVAC ducting or anything you find.
2 Buy a bolt on ram air or cold air intake, this will reduce cutting holes in your vehicle and fabricating to the bare minimum.
3 Or use some mix of those 2, find parts that almost fit and use a little fabrication to make them fit.
If you can swap in or fabricate a larger air cleaner that uses a larger filter element than what the vehicle originally had installed that almost always helps too.
|User Name||Car Make, Model, Year||Cost of Mod||Time to Perform Mod||MPG Before Mod||MPG After Mod||MPG improvement guess||Instruction Link|
|Diesel_Dave||Dodge Ram 2500||$15||4 Hour||+1% to +2%||[]|
|Oil Pan 4||Chevy suburban C10||$25||3 Hour||21||23||+9%||Non-turbo diesel RamAir|
- The suburban N/A air cleaner was fully redesigned, 50% larger air filter element used, opened up the narrowest part of the air intake system from a 2x4 inch opening to 4x4 inch opening and the engine went from breathing in hot under hood air to cold rammed air. This is a good example of what happens when you replace a very poor OEM design with a good hand fabricated one.
Problems / Consequences of mod
It may be possible to pick up more water and dirt with a ram air inlet that is close to the road surface. If the ram air inlet is near the head light it will tend to draw in more bugs.