Mazdaspeed 3 Carbon Fiber Vented Hood

[Moultese]

I think it looks great. It'd definitely be something I'd look into purchasing. How effective is the hood scoop? Anyone monitor temps?

 

[Kain]

and kain there basically is.. all the air is forced down on the intercooler, hard to explain but where the scoop is they made like a platform underneath that stops directly at the intercooler and since it is sealed with the rubber stuff theres really no where else for the air to go...

Pics of the underside of the hood?

 

[Timshadi]

I do Love the look of that hood and was thinking about getting one, but has anyone noticed how heavy the stock hood is?? Its quite heavy!! I question weather or not thats a good thing because it adds weight to the front for better traction on a FWD car. Does anyone know how much the CF hood weights??

 

[justanothermp5]

i actually saw a MS6 with this hood the other day and it looked pretty bad ass
i didnt like it at first but when u actually see it in person it looks a ton better

 

[sleeper3]

We just put that hood on a car at work with an ETS intercooler. definitely not my bag, but it looks sweet with the intercooler peeking out of the scoop. the fit was nice too. He got it sprayed with clear coat and buffed and it's lookin pretty fly.

 

[SallySpeed3]

I think I would like it better if it was painted to match, but that's just me.

 

[ByrdMan23]

I do Love the look of that hood and was thinking about getting one, but has anyone noticed how heavy the stock hood is?? Its quite heavy!! I question weather or not thats a good thing because it adds weight to the front for better traction on a FWD car. Does anyone know how much the CF hood weights??

I was in the same boat you were... after install I have no worse problems with traction

I want to get a ets now really bad but ive heard of fitment issues? also ive had bad luck with mods on my car.. always wants to backfire if i mess with to much air flow and exhaust

I just hate buying carbon fiber and then choosing to paint it.. if they made a fiberglass version than i would go for painting it.. but not carbon fiber.. its to.. perfect haha

 

[Double Dspeed]

Hmm.. your opinion i guess..
Most muscle cars have vented hoods so Im not sure why you are suggesting its ricey... Its a lightweight carbon fiber hood that feeds air directly to the intercooler.. BUT to each his own

Pics that the guy took from the shop.. still have the stripes on haha

well considering muscle cars were more of an american thing and you drive an import putting a giant vented hood that belongs on a mustang just seems like an clip out of Fast And The Furious thats all ma. and beleive out TMIC ducting through the grill and hood is much more efficent then a big scoop considering more air impacts the grill then the hood

 

[ByrdMan23]

My car seems to think differently ^ ; ) considering there is a big opening right infront of the intercooler i would think it would help.. and i still get all the air that the car would get if it was stock...

Hey i liked some of the cars off fast and the furious... PEOPLE WE OWN MAZDAS... not exactly a non-ricey automobile!

 

[sleeper3]

I guarantee this hood doesn't push any more or less air through the intercooler at speed. What it does much better than the stocker is shed heat at a standstill (ie stoplights or after you turn your car off). Since heat soak is a problem inherent in a top mount setup, I'd say this is a pretty major benefit.

 

[Kain]

Pics of the underside of the hood?

What he said.

 

[ByrdMan23]

I guarantee this hood doesn't push any more or less air through the intercooler at speed. What it does much better than the stocker is shed heat at a standstill (ie stoplights or after you turn your car off). Since heat soak is a problem inherent in a top mount setup, I'd say this is a pretty major benefit.

Well a guarantee is all grand but when someone who actually has the hood and a boost gauge sees the results.. i don't know how much your guarantee means.. If you know anything about aerodynamics and have ever seen when air test are done you will see that air rushes and surrounds a car... any vent on a hood,or prety much anywhere for that matter, is going to take in air that is for sure..Im really considering getting a air meter and taping it to that vent just to prove it...
companies such as dg understand this concept which is why they made the small off-centered vent to feed the intercooler.. I personally cant stand that small off centered vent which is why i went with this one.. either way the vents are designed to feed the intercooler

I will agree that heat soak is a major issue and this combats that.. not so sure how you can guarantee what you did though..
I would hope that dg

- more pics hopefully soon.. but i will say that theres not much to look at underneath.. i just had a local race shop transfer the rubber piece that seals the intercooler

 

[sleeper3]

you use a boost gauge to measure air flow over your intercooler?

 

[ByrdMan23]

NO... but if i hold more boost at highway speeds than i did before the hood.. more air has to be coming from somewhere
before the hood i spiked at 22 and held right under 17.. now its 24 and 18..
Its not a hard concept to grasp that if you vent a hood more air is gonna come through while moving..

 

[sleeper3]

lol

 

[bacarl]

.... any vent on a hood,or prety much anywhere for that matter, is going to take in air that is for sure..Im really considering getting a air meter and taping it to that vent just to prove it....

I know it's hard to make objective calls on stuff you've already spent money on, but until you actually put a pressure meter on both sides of that scoop, you aren't going to convince me that it's taking in air. Check out this article that I'm trying to attach (I hope it works). It objectively disproves what you just said. It's unintuitive, but then again, just because something is intuitive doesn't mean it's true, and unless you know it's true, you probably shouldn't go spouting off about how sure you are of something.

NO... but if i hold more boost at highway speeds than i did before the hood.. more air has to be coming from somewhere
before the hood i spiked at 22 and held right under 17.. now its 24 and 18..
Its not a hard concept to grasp that if you vent a hood more air is gonna come through while moving..

I'm fascinated by the concept that the amount of air moving around in the engine bay can both increase boost and reduce turbo lag. I always thought those characteristics were based on internal physical limitations of the system. You are really on to something here.






[/sarcasm]

 

[mazdaspeed32007]

I guarantee this hood doesn't push any more or less air through the intercooler at speed. What it does much better than the stocker is shed heat at a standstill (ie stoplights or after you turn your car off). Since heat soak is a problem inherent in a top mount setup, I'd say this is a pretty major benefit.

how do you know the air is directed into the intercooler and not running down the back of the motor and cooleing your DP. i suggest looking into some kind of duct work to put the air through the fins of the IC...otherwise your functional hood scoop is not functionally sound

 

[sleeper3]

The hood scoop has the same ducting and seals with the intercooler shroud. I'd say that's an indicator that air is moving over the intercooler. Maybe after that, it cools the downpipe. One can only hope.

 

[ByrdMan23]

wow abounch of feedback... first of all bacarl.. system limitations has nothing to do with it.one of the first few mods someone does is a intake and a new . bypass valve. i have seen litereally like 20 people who said they saw boost gains after doing so yet that is suppost to be limited..

Im not goig to go throught the trouble of proving it to anyone.. all i can say is that if you think a massive vent in a hood isnt going to take in alot more air you are retarded...

Mazdaspeed32007 is the only one that has said anything that makes since because he atleast states that air is going through the vent which is obvious.. it is possible it is not all going to the intercooler and i might look into some duct work even though it seems pretty well directed

I don't really care to prove my point cuz that hood is badass and I have seen the gains.. if y'all dont like it DONT BUY IT
yall are basically saying that ram air hoods and vented hoods dont take in air.. which is probably one of the dumbest arguments i've ever had to try and disprove

 

[mazdaspeed32007]

all you would really need is a U shaped shroud that follows the contour of the scoop so the air is pushed downward directly into the intercooler. which would be perfect....then you know all the air is going directly into the IC. the thing is even our stock stealth scoop has a seal around it to stop air from running all over the engine bay.

id hate to be a follower and say i cant see how you would gain hp and boost pressure from a scoop given you havent changed any parts you had on the car before. but...your still pressurizing the same volume of air at the same rate without any adjustments to your boost or wastegate so your boost shouldnt change. i could see how it would hold boost to a higher rpm because the turbo wont be sucking in hot air and falling flat on its face as fast. you would see a steady boost holding from lets say 3300-5900 as opposed to the stock 3300-5400 (approx numbers) the stock bpv leaks boost thats why you only hold 12-13 psi. the forge is a much better engineered product and youll hold 14-16 psi. you actually altering an engine part though...the scoop isnt changing anything besides air flow.

the only example i can think of is your breaks. if you have the same surface area on your breaks but introduce cooling they wont heat up as fast and will hold the same breaking power for longer...but it will never slow the car down more than what the surface area can slow it down at. if you added a bigger rotor and pad then youll be changing how the break will function with weight. idk...maybe its a dumb example but i think it works alright. its the same principle.

but other than that i think theres def gains with a hood scoop. your basically getting the benefits of a front mount but the efficiency of the top mount. getting a bigger top mount youll see awesome gains with the hood scoop. i dont really care for the hood scoop because i like nice and clean sleeperish look. but i think the scoop looks good if you like flashy. as long as its functional i dont have a problem with it....but my opinion shouldnt matter either way....im glad you like it. show it off mane!!!! its your work of art!