I have a 99 sr5, it has the hood scoop. Under the hood it has a piece of metal that blocks the airflow from coming into the scoop...so basically the scoop is simply asthetic at this point.

My question is if it is ok to take this piece of metal off and allow airflow into the engine compartment through the scoop. Is there anything BAD about doing this? Also is there anything that I can do to actually route the airflow somewhere where it would be beneficial to the operation of the car?

I have had mileage problems with it and am wondering if there is anything I could do with the airflow to even just improve the mileage also.

 

I don't know if it will help with mileage...but I'm sure you can cut that out just make sure you don't cut where the scoop mounts. You could build a box and some piping to run that air to the air box I cant find a picture right now but I know I've seen one, will post if I find it. Just put wire mesh or something across the front of the scoop so big crap doesnt come in

 

It could be done, but you might want to think about where all the water (rain) and other stuff the scoop will suck in is going to go.

 

it's been done.

https://www.yotatech.com/forums/show...nal+hood+scoop

 

Bahahahahahahaha

 

i would not run tubing from the scoop to the air box ... if anything i would leave it open and hopefully it cools down the intake manifold or the s/c. IMO

 

Just remember that when you are driving, the wind hits your front bumper and actually creates a stream that runs well above the hoodline. In fact there can actually be a negative air pressure in that area at certain speeds.
In my opinnion it is better to just leave it as is and use some of the other induction mods such as the deckplate.

 

That was just alot of work to gain nothing but getting soem air over the engine would be a help but I wouldn't do any cutting on mine unless I go the SC'd route.

 

first of all, that piece you're referring to isn't metal, it's cast plastic. it's actually an insert that you see from the outside w/ a closed back. on the JDM models w/ the turbo diesel, it's the actual intake. you can take the insert out and either drill holes in it from behind or cut it open w/a dremel or similar tool.

however, the benefits from doing this will be negligible at best...

 

Hmmm...thanks for all the input.

I was just looking at it while I was under the hood this weekend and thinking of what might be done with the scoop to be creative or increase efficiency somehow. I dont like the idea of it being open and water and junk getting in under the hood on top of the Intake Mani and engine block so i think I will leave it on for now.

Thanks for satisfying my curiosity!

 

Did anybody read his flow philosophy? He claims that the 4 3/4" tubes flow the same as a 3" tube. Without thinking of fluid dynamics and looking solely on surface air, you would need 16 3/4" tubes to cover the area of a 3" tube. It's been a while but area for a circle is still nr^2... pi (radius squared).
Right

 

yeah. when that was originally posted a couple years ago, it was shot down w/ the quickness. also, there's a slight low pressure cell right where the scoop sits due to aerodynamics and the brick-like front end of the runner, so unless he's under heavy throttle, the tubes are probally SUCKING air from his air box at highway speeds. Also, the line losses for the (4) 3/4" lines probally negate any increases that he would have seen.

a better way to get cool outside air to your intake - ARB Safari Snorkel

modding the scoop doesn't do anything for performance.