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Chili
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Last new vehicle I put an intake on was a 2018 Silverado 5.3. It made the engine a smidge louder but also added a drone to the engine and led me to pull it off due to it being annoying.
Not sure how the Ecoboost is affected, but something to look into.
Not sure how the Ecoboost is affected, but something to look into.
Coll4646
Well-known member
Question on the Roush, the air gaps seemed pretty significant to me when I installed. I ended up sealing them with some high temp silicone. Any concern with doing that?
I maybe get some gap so there’s play to allow the unit to move a little but the gaps were big enough a part of me worries it was designed that way on purpose for some reason…
I maybe get some gap so there’s play to allow the unit to move a little but the gaps were big enough a part of me worries it was designed that way on purpose for some reason…
RickBullotta
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Gaps on the box are meaningless, mostly. Air still has to pass through the filter. The slight differential in air temperature with some ambient engine air being pulled could have a slight impact on performance, but in theory is also provides additional incoming flow versus what the intake snorkel can get. I'm leaving mine "as is".
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RickBullotta
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Intereresting info from Cobb regarding the stock intake snorkel collapsing under high air demand, and more reason why a little extra air gap around the intake might not be a bad thing!
Gen3 Raptor Issues: Intake Collapse - Customer Support Center - Confluence (atlassian.net)
22Platinum
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Can you post images about this?
amschind
Well-known member
Depends on what you want to see. The air duct is formed by the hood itself as the upper half and a plastic piece for the lower half. The big challenge is that the plastic lower half seems like it was molded for another model (I had to call and ask for it separately and when it arrived I had to do a lot of Dremel surgery on it to get it to fit). After a few efforts my best and final one was drill holes into the underside of the fiberglass hood fill with wet epoxy and then screw through the plastic into that. I can't really show you that because it's covered with a dynamat underhood reflective mat.....the picture is just the underside of a hood with reflective dynamat foam on it. The air duct opens up directly over the stock airbox, so if you just leave the upper window off of most CAIs, the air flow shoots directly at the filter.
Unsure if that helps, but I can explain more if not.
22Platinum
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I was hoping to see your truck with which Cervini hood on it, as there aren't many photos of 21+ with this. And then whatever you've got on how the CAI fits against this hood; I've got the AFe magnum and I'm skeptical about it's fit against the bottom of my stock hood. I'm also interested in either the Air Design hood scoop from Ford or the Cervini but torn.
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amschind
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Outside pics are easy, and I've been meaning to post them for a while regardless. I can take a pic of where the hood duct releases the air, but you'll have to use your imagination since the hood has to be closed to see them fully meet up. I have a Momentum GT, and that window hole matches the hood duct exit almost perfectly. The Magnum hole looks like it's about twice the dimensions of that, but with a turbo engine you're not really trying to make a fake supercharger as much as ensure that the turbos are never short of inlet airflow. My point being, blowing air AT the filter will do most of the good for us, where all someone with an NA engine trying to pressurize the cylinders would lose a lot of air pressure into the engine compartment though the same gap.
Suns_PSD
Well-known member
I kind of did a deep dive into this one and what I realized is that my AFE Momentum air intake includes a very rigid well built intake snorkel that isn't going to collapse.
This might be the sole reason that it was clear to me my truck pulled to redline better once I added that AFE intake.
Suns_PSD
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I always choose the dry filter options.
They do flow slightly less freely than oiled filters, however they have higher efficiency, No chance of downstream damage as a result of air filter oil & are just easier to maintain.
There are a few oil and flow analysis floating around out there, and I'll tell you that oiled filters, while flowing well, let through considerably more dirt than a dry filter.
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TheGoatman
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Thanks
yeah Cobb needs huge props on the development here. I’m impressed with the report and info that will likely not result in them make direct money off it.
certainly earned my consideration of their tune and products moving forward tho
I will be trimming my shroud in front of the snorkel this weekend
yeah Cobb needs huge props on the development here. I’m impressed with the report and info that will likely not result in them make direct money off it.
certainly earned my consideration of their tune and products moving forward tho
I will be trimming my shroud in front of the snorkel this weekend
HammaMan
Well-known member
There are no free lunches with filters. Increase area or increase the size of particle captured. On MAF equipped vehicles there's always a chance of oil contaminating it. Had a taco with a K&N on it and finally got rid of it after the 4th CEL from MAF oil contamination. Did take much to upset that MAF for some reason.
Paper filters also have the luxury of having course dust removed with easy. Oiled filters just turn it to mud.
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