andrew123

im looking to purchase a cold air intake for my rx8 but i dont know if i should get the revi or the aem intake.
i want to know which one is better in performance and quality.
please help.

Fanman

Considering the AEM isn't really out yet this question might be a bit difficult to answer. The Racing Beat REVi I ave seen a few times & it is top notch. Great quality, as pretty much all the products from RB.

lurch519

generally, i would go with the aem, but it is not available yet. i personally am waiting for it to be released.

my experience with my last 3 cars and all of my friends cars is the aem tends to be one of the best in quality and performance.

RotaryManiac

If the AEM isnt out yet, then why can you already get it on ebay for 271 bucks???

zoom44

well they seem to be saying that the aem v2 uses some kind of resonance tuning. that would be good i suppose on cars that do not already utilise it. i wonder if it would be counter productive on the renesis intake. if they did not thoroughly test and design for this specific car the "sound waves" could cancel each other out. or am i just plain wrong here?

Im_DANomite

iTrader: (1)

AEM is crap...everytime i have installed an intake from AEM, it never fits.

lurch519

the shop i used to work for for 6 years and will be returning to contacted aem directly, and aem specificaly said that the intake for the 8 had not shipped to anyone as yet.

you can go ahead and order it from ebay, but i feel you will be disappointed with how long it takes to receive it.

now this was more than 4 weeks ago, so maybe aem has released it since then, but i am wondering that the only auction on ebay for the aem for the rx-8 is this one,

ebay auction for aem intake

and out of all the pics they show, not one is for the rx-8, and aem's website says that the availability of the intake is pending.

things that make you go hmmmmmm.,......

RotaryManiac

These things made me go HMM... so i got the revi today. :D

Mikelikes2drive

the revi isnt a CAI like the aem one, so if u want a CAI (which i wouldnt get cuz of rain) you should go for the aem one

lurch519

rain will have the same effect on an intake whether it is cai or not. the problem with a cai is standing water on the road where the filter of the cai is submerged sufficiently enough to suck enough water into the engine to hydrolock the motor.

i have had 3 civics, and everyone had an aem cai, and not one of them had any problems with sucking up water into the motor. if you are approaching any standing water, then what you should do is let off of the throttle, as water has siginificant weight and as such would require lots of vaccuum to overcome gravity to suck enough water up the intake to cause damage. from what i have seen of the aem cai for the rx-8 and its placement, we would need to run through approximately 8-10 inches of standing water before we would have a problem.

anyone here willing to try running through that much water, with or without a cai ?????

zoom44

how isnt the revi a cai? its taking all of its ait from outside the engine bay- its absolutely a Cold Air Intake.

therm8

yep, in the same manner that the stock intake is a CAI. In fact most vehicles take air from outside the engine bay (stock) in one way or another.

attached is a 35 year old engine bay with stock intake:

Mikelikes2drive

ehh i guess i worded it wrong... i was talkin about the aem CAI's where they have piping leading all the way down below beneath the engine bay... ehh cant explain it... ill search for a picture.

::edit:: here's the pic...and i was referring to the revi not being a CAI by meaning that it wasnt tubed really low like the aem version

LiL BenNy

interesting i like RB. they're cute lol.

andrew123

ive been calling around and the aem cold air intake system is scheduled to be released June 10, in about a week or so.

success07

RB is developing something similar to the AEM version. Interesting.

From RB website - "Ram Air Intake - We are currently developing a Ram Air Intake Duct for use with the REVi (and most other aftermarket) intake system. This duct will collect air from the nose opening and feed it directly into the intake mouth. Tooling is currently being produced from the prototype master, we hope to have this duct available later this spring."

lurch519

a ram air is worthless, see post by rotarygod

how ram air is different

zoom44

ah but you miss the point lurch. tam air meaning "force feed the engine" doesnt work. but directing cooler air from lthe front of the car to the intake certainly is worth it.

lurch519

point well taken, i do understand that concept quite well. i misspoke on my previous post. thanks for keeping me straight.....lol :D :D

r0tor

iTrader: (1)

ugg... putting in simplistically, flow through something like an intake is dependant on 3 things - pressure at the entrance, pressure drop throughout the system, and pressure at the end. To increase flow, you need to: make the entrance pressure higher (then atmosphere), lower losses in the system, or make the exit pressure lower (already a vacuum). You do this by: placing the entrance in a zone of high pressure (front bumper), making the system flow better (new intake), or increasing displacement (engine pulls more vacuum).

anyway, its rediculous to say a "ram air" setup is worthless despite it not really ramming air...

lurch519

you are right, a ram air setup is not useless.

from an engineering standpoint, it would be pointless to develope a "true" ram air setup for our cars as the gain from a hp standpoint is pretty negligable. probably in the neighborhood of 1 horse power gain at our top speed of roughly 150.

from a marketing standpoint though, it will probably be a gold mine, as people will see, "hey, i can add a RAM AIR setup to my car", not understanding the principles to this, and thinking that it will be a huge increase over stock (this may or may not be true) and other intakes on the market.

i have seen poor examples of a ram air setup sold in the form of the weapon r add on. the quality of the kit made me laugh, and the tubing diameter was smaller for the ram air than a stock 83 civic exhaust pipe.

J-Zilla

I was set on getting the RB Revi, when my friend asked me if I checked to see if AEM had any products available.

http://www.aempower.com/product_intake_app.asp

Does anyone have an idea when their cold air intake will be available.

And what are your impressions on AEM products in general?

Now i kinda wanna hold off on getting the Revi until i see the reviews on the AEM intake.

Xyntax

^ They're too busy humping on Hondas. Go with RB REVi, they are more dedicated to our cars.

XDEEDUBBX

AEM has been procrastinating for the past year or so. They said they are trying to make it "right". Just wait and find out...