From information I have found , IIRC (and we know that what is found on the internet is all true, lol)
1. Ram air effect is only good for 2-3 HP, unless driving at very high speed.
2. Cold air induction is supposed to be good for 8-12 HP. Also hood scoops are not much effective unless the bottom of the opening is at least 2” above the hood.
3. Supposedly cowl induction is better because of higher air pressure at that area. (The vent system on my car would make me believe that.)
My system draws all air through the scoops (except bypass leakage) and the underhood liner has somewhat a insulating factor. The hood ‘donuts’ being higher on top was supposed to be Mopar’s way of helping to keep rain water from entering.
Again this was done more for my entertainment and busy work than for any expectation of great results.
I appreciate all of the feedback.
MY INSTALL:
I used plastic ‘corrugated’ sign sheet for the bottom. After determining the approximate closed hood height , I put a small rubber hose with a dab of grease on the top, on the air cleaner threaded stem that would not fall down but slip easily. Closing the hood (gently) left a grease spot to determine the exact center of the air cleaner location.
The seal was made from open cell foam rubber adhered and sealed with clear silicone caulk. After assembly, I fastened it to the hood support braces (in existing holes) using plastic expanding rivets. I substituted metal #8 screws for the plastic ones. On the two central fasteners (one hidden under foam) I used longer screws with a piece of small rubber hose as a spacer.
I hope the pictures will explain the rest.
Yote
