Better flowing intake for 5.7 w/Ecodiesel lower airbox

[KMKKOZ]

Thought I'd share this with the forum, the Ecodiesel lower airbox takes the same air filter and top lid as the 5.7 trucks but has an inlet that is roughly 50% larger. The part numbers for these are:

Inlet: 68190706AB
Lower Box: 68232657AC

Links to where I got them:
https://parts.allmoparparts.com/oem-parts/mopar-air-inlet-duct-68190706ab
https://parts.allmoparparts.com/oem-parts/mopar-air-cleaner-body-68232657ac

I took a pic of my Trinity with some air intake PIDs to show it flows really well.

These parts cost around $60. So for those that want to keep things all factory parts but want to have a better flowing intake without spending hundreds this is a good choice.

Please note this is not needed on the 6.4 trucks as they already have a lower intake box that uses the bigger Ecodiesel inlet tube.



You can see by the "P-RAT MAP BARO" pid that it hit 1.00 which means the engine is getting air equal to barometric pressure. This means the intake has virtually no measurable restrictions. The OAT was about 35* that day which means the engine is injesting air 7* above ambient temp. "MAP VAC" goes down to almost 0 almost every time the throttle is pressed confirming the P-RAT value.

Thank you very much. I just got the whole Eco airbox on eBay, the whole top and bottom and and intake and everything for 70 bucks. I just took the lower bits and popped them on. Took like 10 minutes including one beer.

I took a test drive and honestly can't tell if it's better but I like it. I tow a travel trailer so more air has to help. Still has stock looks, but better than OEM. I had them next to each other and was very surprised at the difference.

 

[Hemi395]

Youre welcome[emoji106]

Probably won't notice a difference until WOT or when towing. It does seem to breath a bit better than the stock housing when I'm towing. Also grab a filter from the 6.4/Ecodiesel trucks because they have wider pleats and flow better than the 5.7 filters...

 

[KMKKOZ]

Great idea thanks!

 

[Josh Swanberg]

Anyone successfully just swap the air duct? Not seeing the point in changing boxes when you could just do that. Any pictures of the dremel work?

 

[chris52010trx4]

Anyone successfully just swap the air duct? Not seeing the point in changing boxes when you could just do that. Any pictures of the dremel work?

Yup just needed to cut the opening to fit
Used this pic for reference and worked great

Sent from my SM-G996W using Tapatalk

 

[Hemi395]

Yup just needed to cut the opening to fit
Used this pic for reference and worked great

Sent from my SM-G996W using Tapatalk

I'm glad someone tried this on the factory lower airbox. This makes the mod even cheaper[emoji106]

 

[chris52010trx4]

I'm glad someone tried this on the factory lower airbox. This makes the mod even cheaper[emoji106]

Yea I paid like 30 bucks I think for the duct... its not terrible and does the job just the same

Sent from my SM-G996W using Tapatalk

 

[hunterdan]

Just ordered the box, duct and a new arm filter. Would love to combine this with the airaid mit intake tube, but can't justify the $200+ price tag of the tube and filter.

 

[Hemi395]

Just ordered the box, duct and a new arm filter. Would love to combine this with the airaid mit intake tube, but can't justify the $200+ price tag of the tube and filter.

Yeah IMO the intake tube isn't worth it. It's smoother than the factory tube but the factory tube is slightly larger in diameter...

 

[hemihustlin]

Yeah IMO the intake tube isn't worth it. It's smoother than the factory tube but the factory tube is slightly larger in diameter...

yeah I quite liked the airaid jr mit for my 06 got rid of all those junk resonators but this 4th gen intake tube is so clean I cant see myself paying for another one that will look basically the same.