Which air intake to get
 

So i just bought a weapon r air intake and was womdering if thats a good choice. I read acouple things on here sayin it took power away. You think i should return and get a different one?

Yes, weapon-r is one of the worst offenders when it comes to losing power from aftermarket intakes. K&N being the other one it competes with at the bottom. Only way to get worse than those is with ebay no-name-brand stuff.

What brand would u reccomend

Thats really cool how did u do that

WCS's pic was actually done by someone, and it's retarded. He was posting it as a joke. Look at the neck that they both go down to. It's still the restriction point, not to mention it's lacking any airflow control, etc...

Intakes are FAR more complicated than some people realize.


Racing Beat, AEM, and Mazdaspeed are the only ones proven to produce gains in power.

http://www.racingbeat.com/RX8/Intake...ers/18299.html

Think this would be a good one

That and the AEM CAI are the only ones that are recommended.

Go for it.

Alright thanks ur input

Another that gets overlooked because it's pricey.
Mazda RX8 Cold Air Intake System. Mazda RX-8 Horsepower Performance Parts.

http://www.srmotorsports.com/RX8_Cold_Intake_Black2.jpg

in stop & go driving or extended idling most of those become hot air intakes

so for a street car the Racing Beat box intake is your best bet

the TeamRX8 toaster intake increases power as well :cool:

The K&N Typhoon is no good? why is this?

Racing Beat CAI

AEM CAI

Several reasons:

1) The intake opening is inside our engine bay, which gets rather hot. Even the OEM intake pulls area from outside the engine bay. Hot air means less air, and less air means less power.

2) The length from the opening the filter / opening of the intake to the MAF is much shorter than OEM, leading to different airflow characteristics over the MAF, that the ECU doesn't expect

3) There is no design consideration to straighten the airflow across the MAF, unlike the OEM intake with screens, which compounds the problem present in #2.

4) Historical evidence from numerous members here report rough idle, stumbling idle, CELs ranging from bad MAF airflow to lean and/or rich conditions while the ECU tries to figure out what kind of airflow the engine is actually seeing ... and keeps getting it wrong.

Thank you. So racing beat is the best choice? How much gain?

1-4ish hp. It won't be much.

Yes, the stock intake IS actually that good.

Take a look through my newbie's guide to modding thread (in my sig). There is a section on intakes.

okay I'll check it out thank you again

I got the AEM and i'm very happy with it. I like how it looks through the grill of the bumper, the sound is amazing and loud at high RPMs, and i feel more of a pull. A little to be asking though, since you already bought a weapon-r, am I right...?

i think you heard a louder noise and thought you felt your car getting faster.

dynos show that the intake barely improves hp.

My baffles were removed and i didnt have my exhaust connected so my car was pretty loud when i put my intake on, so when i put my exhaust back on and it quieted down, i didnt notice and noise increase or power increase..

but the intake looks pretty!

Ya but I just returned and doing some more research

Yeah, go for the AEM or Mazdaspeed. Those are supposed to be the best, err... only good ones i guess, haha. I haven't heard much on the RB one, but it sounds pretty cool and a lot of people have it, but i haven't done much reading on it.

Isn't all this answered in RIWWP's sticky?

I would also recommend the AEM . They have the best gains and most reliable.

A thought...

even with the factory intake, you get a lot of hot air into the intake. I see 15 to 20 degree rises once the engine heats up, and the radiator starts to heat all the air behind the bumper.

The racing beat duct makes sure you get cold air. I am saving up for that one, with the factory intake. It is a little harder to install, but not bad.

Just my opinion...

Return it, save your money for a midpipe or AccessPort with tune.

Since 04Green brought up installation, i would say the hardest part of an aftermarket intake installation is removing the stock airbox and intake. And still, that isn't saying a lot, it's pretty easy.

i wouldnt waste the money on a rb intake box, just get a filter, do the box mod, and a rb duct.

The gains from the RB are documented unlike most other intake systems. The stock box mod doesn't do jack shit.

Dyno results. MAF data would be good I guess, if the test vehicle is on a stock tune that is. and of course if the dyno runs were done back to back.

Never had the RB intake with duct combo, but I can vouch for the AEM/MS CAI.

I have had mine on for years and my IAT is never more than ~20 degrees above ambient.

:lol: We (SARX) all sat in traffic idling waiting to get into a big event last Saturday and we all saw IAT's in the 150F range when ambient temps were around 90F. Two of the cars had AEM/MS intakes and were right at 150F with me (turbo) and the highest was 165F+ in a stock (engine wise) R3. One had the RB but he got separated from us so I wasn't able to see what his IAT's were. I wish I could have.

I guess living in the desert would cause that. I lived in Palm Springs, CA (grew up there) and it would be anywhere between 100 and 115 during the summer.

When I drove my 8 from CA to DC it was 112 one day, but I didn't check my IAT to see what it was. Couldn't be any cooler that 112 and am sure it was way higher...

Cold air is hard to come by in high heat :lol:

Yeah when moving on the highway it's not an issue but at low speeds in traffic and idle it is. Heat soak is a bitch.

Hay guys... Chiming in.. on the intakes... I have had the following...

Stock
AEM CAI
RB Duct and intake kit.
Stock with RB Duct K&N Filter
Stock with RB Duct Baffles removed K&N Filter
Stock with RB Duct Baffles removed and Screens removed K&N Filter
Stock with RB Duct Baffles, Screens Removed K&N Filter and Duct cone thing i fiberglassed up.

AEM or RB WITH THE DUCT is by far the best method.. All the stock variations where ok. and the the intake cone I fabricated was ok.. It worked better than stock in higher RPM 4-5k range seemed a bit more responsive over stock but that was it. the AEM and RB feels much more responsive over that as well. in making that cone the result is not really worth the labor.
but it was a fun little project and it was nice to test out the idea i had. :)

https://www.rx8club.com/do-yourself-...x-cone-234097/

I am currently on the RB with duct and its simple and an easy way to go that provides honest results... Does anybody have any independently done test results on the SR motorsports intake??

I seem to recall a thread that I think you posted in where a guy did back to back dyno tests on the same day of the stock, Injen, and Racing Beat. The Racing beat made about 10+WHP more than the Injen and stock IIRC. And yeah I agree on the MAF readings, I am certain you would see and increase (or decrease) in the G/S when doing an intake swap and back to back dyno runs on the same day, under the same conditions.

Same old results as any other intake thread..... if you're looking for power increase then there are better things to put your money towards. Certain intakes may delay heat soak but if your in traffic long enough your gonna see high temps regardless

Yeah we found out the factory intake temp reading maxes out at 170F. My buddies car got to 170F and never above and that was with a stock engine and airbox.

Go with the AEM or Mazdaspeed CAI (actually the same piece) . I have had a Mazdaspeed CAI in both my 2008 40th Anniversary RX8 and my 2008 Mazdaspeed 3 GT and both have been bulletproof. A performance improvement with better breathing and denser air. I have owned seven rotary Mazdas since 1973 and several have had CAIs. The AEM and Mazdaspeed model has been the easiest to set up correctly and a completely troublefree CAI. If you can still find the Mazdaspeed version (and they are getting hard to find) you will get a Mazda warranty. But even if you go with the AEM, they are so reliable and easy on your engine, you should have no problems. Enjoy !

I just put my smelly old work sock in the end of the maf accordion. It's the ultimate intake here's my dyno proof

Attachment 288896

Holy crap! Is that work sock setup a Brettspeed beta project. That setup has totally gotten rid of the SSV and APV dips in the HP curve

If you're set on getting a cold air intake, do NOT get anything other than Racing Beat's, AEM's, or Mazdaspeed's intakes. Everything else is a complete rip off and you will LOSE hp and mpg. The stock air box is already really good so you won't gain much at all, but I would recommend getting the AEM or Mazdaspeed intake. The AEM and Mazdaspeed intakes are actually the EXACT same thing so It's up to company preference/what deals you can find online. I personally went with the AEM intake just because amazon had it for $300 plus FREE one day shipping. It's funny, even the AEM intakes have Mazdaspeed engraved in one of the tubes. :rofl:

Brettspeed had input into the work sock setup but it will be sold under the "Slidespeed" brand. I just bought all new work socks so I will have approx 10 Sock intakes up for sale on a group buy very soon, as long as they all pass my quality control tests of course ( not too many holes, not too thin ect)