RiX-8

Input would be great

yiksing

I think the Revi intake + duct is good but the duct blocks a portion of area for the radiator.

nycgps

iTrader: (1)

the duct use most of the space for VFAD , and just sticking out a little at the bottom. it wont block the radiator.

The stock Radiator sucks anyway.

Razz1

Yes, do a search.

NgoRX8

iTrader: (1)

i like it

mysql101

it sounds nice, and looks good, but ultimately no intake for the rx-8 is really worth the money unless the price of admission is under $100, due to the gains.

the nice part about the revi is that the duct helps channel cold air into the car. That part is only $100 and you can use it with any intake, including the stock one.

Just keep in mind that if you go to FI, you will not be able to use this intake with a turbo.

W1CK3Dninja

depends on how precious money is to you. if it takes you weeks to save up 300 for an intake it is probably not worth it. you won't notice a change in acceleration but it will make a louder noise.

skhmund

"you will not be able to use this intake with a turbo."

really? y is dat?

Zokk's 8

"depends on how precious money is to you. if it takes you weeks to save up 300 for an intake it is probably not worth it. you won't notice a change in acceleration but it will make a louder noise."
__________________

www.rxtuner.com did a dino before and after the Revi (no duct) and had a 10hp gain, mostly to the midrange, I think that is noticable. Check it out, there is a link to the article on their homepage. They were impressed.

Fanman

Turbo kit has it's own intake system. The air intake for a turbo won't be going straight into the engine, like the stock or REVi does.

FASTNMEAN8

every 8 owner knows that it won't give you amazing results, but its good for the engine to breathe that colder air.....I heard a lot of good things about the Revi, I question the price, but it seems to get a lot of good results.... good thing about Revi is that it gives you a stock look, and it brings colder air from outside....

Another excellent intake system is the AEM CAI, it basically does the same job as the Revi except the AEM has gains on the whole band range of the RPMS.... both are good investments!

r0tor

iTrader: (1)

$100/hp is no that great of an investment (based on purely a performance aspect)

HooDoo

5/1/06 - Revi + Ram Air - 24,000 miles + installed new spark plugs with the Revi. – OEM tires, exhaust, 91 octane.
Sound – Don’t notice a difference. Kids don’t notice a difference. Sometimes hear the ‘sucking’ noise above 6,000 revs.
Idle – the bumble, or rev dip or whatever it is called is gone. Smooth idle now.
Power – feel more pull above 6,000 revs at track
Mileage – 1st tank city, 21mpg + 1 over standard 18-20 – 2nd tank freeway cruise 23mpg + 2 over standard 20-22 - 3rd tank rush hour freeway and city, 21mpg. Overall, 1-2mpg better.

JB_Rotary

I would reccommend the AEM becasue I am sure it is lighter than the Revi + RAM scoop. It will be really loud thuogh

flyboi1121

I got the AEM cuz u can get it under $300, and although u dont get huge gains, u get something through the whole band as fastnmean8 says. throttle response got nicer too

personally, i like how the aem looks... a straight polished pipe

revi is a great piece but i chose aem over it

Rx-8 TT

Let's go with Revi.

Im going to order it next week

cuz I am still waiting my new Amex Blue credit card.

NgoRX8

iTrader: (1)

lol...

Jaguar_MBA

RiX-8.

First, when people say " I like my car to suck in cold air" as a decision point to purchase a new intake, you need to be aware that you car comes stock with a CAI (Cold Air Intake) System from the factory..it is as Cold air as cold air can get.

Second, Some people say they enjoy the increased sound.....if you want a louder intake sound..remove the VFAD (Variable Fresh Air Duct). I believe that removing the VFAD provides better performance too....but Racing Beat does not agree.

Third, Racing Beat's intake system will cost ~$400.00 for 3.5HP Gain... you can get 2 HP gain by enlarging the oval inlet into the airbox...this in the inlet that the VFAD fits inside of....and would be a very cost easy and effective modification.

Fourth, Get a High Flow Drop in filter such as K&N or aFe for $60. They are re-usable. + 1/2HP..maybe more

Fifth remove one of the Mesh insert screens around the MAF. This will net you 1HP

My Guess is that you can get close to the same results (3.5HP) of the expensive intake kits with a drop in filter, removal of the VFAD, remove one mesh screen and enlarging the oval into the air filter box.

Last Thursday I was drag racing with a fellow that had a WRX with 20 psi of boost. I asked him why he was using the stock air box. He says he has tried all different type of intakes...cones, SHort rams etc....and that he gets the best results on the drag strip with a K&N Hi-Flow filter with the Stock air box.

mysql101

Technically, yes, but the air is being pulled from the bumper, not the outside of the car, and the intake is basically in a closed position until you go faster.

I tried that, the sound change wasn't anything to write home (same goes for the revi). Performance wise I didn't feel any change either.


And cause your car to stumble. The screens even out the airflow. The revi channels the airflow better than stock so it only needs one screen.

3.5hp, or 1hp, it's barely any change either way you go. No one is arguing that point.

Tamas

iTrader: (1)

Yeah, I'm sure Mazda engineers made the oval opening of the stock airbox too small and put the VFAD and mesh screen there to decrease performance on purpose - which can be all fixed by someone in the garage with basic tools.

Jaguar_MBA

Tamas, I guess the Mazda engineers did make it to small for HP oriented guys:


http://www.racingbeat.com/FRmazda4.htm

The following table lists the measured power gains from various aftermarket components. Testing has been conducted on the Racing Beat engine dyno with both pre-production and production Renesis engines.

1. Intake – enlarging the oval inlet to the factory air box - +2 HP (this modification eliminates the VFAD intake duct.).
2. Headers – approximately 4 HP peak power gain.
3. Mufflers – muffler & connecting pipe - 2-3 HP.
4. Removing the muffler from the car (engine) – about 4 HP.
5. Remove catalytic converter and resonator from the engine completely, and replacing with "cat" replacement tube – max benefit 8 HP – regardless of what muffler is used (or even no muffler).

SWVA_RX-8

I have an AEM and love the saound but I am going to go back with my stock airbox and modify it. It will give better result with Mass air senor becuase my AEM tubing is only 3 in. and the MAS is capibrate for the factory 3.5 in. tube. Because I get alot of Backfire with the AEM CAI

FASTNMEAN8

You get backfire from the AEM? I had a cracked pipe because I bought it off of a friend, and the only problem I had was it sounded like a hamster hahah.... but I called up AEM and explained to them my situation, and through one of their vendors I got a brand new one, I just paid shipping

redcivic

anyone have a picture of the VFAD? I am not sure what i am looking at.

mysql101

it's the long tube looking thing.