Intakes Reviewed: Racing Beat VS K&NII
 

So i decided to change my intake setup from the k&n typhoon 2 W/ Racing Beat air duct to the full Racing Beat intake system.
Opened the box nice packing lots of bubble rap, the instruction were great nice and detailed, the actual box was kinda cheap (scratches real easy) but real nice looking, instructions says bout 1hr but since i have the Racing Beat air duct install it only took about 15min.
With the Racing Beat on I start the car up, rev it up alittle first thing i notice that i lost the grunt that the K&NII gives, I expected that but did not expect to notice it gone with all my mods, but suprisingly it was gone.
The K&NII on the other hand sounds great w/intake header, and exhaust gave much more rasp(extra grunt).

So driving with the full Racing Beat intake setup and i notice, idle was no different from the k&n, seem like the rpms would not go up as fast as the K&NII, acceleration felt a bit slower, and on the freeway 4th gear about 80mph floored, top end did not seem as great took abit longer than im used to to about 120mph.1st, 2nd ,and 3rd gear with the K&NII W/Racing Beat air duct setup i was also able to loose traction when shifting and felt a nice pull back when flooring on a roll, but with the rb setup the car just didnt do that, car didnt feel as quick.

Overall on the Revi the price is alittle steep, but real nice product looks great if your into that stock look and want no intake sound and more exhaust sound.....but between the two, K&NII w/Racing Beat duct felt alot better than the full Racing Beat setup.
In the end i end up putting the K&N typhoon 2 back on and got back all the missing pull, sold the Racing Beat Revi.
For what its worth the rb revi also weighs more than the k&n.

Mike and Gil

LoL Maybe the lack of noise was causing the horse power loss Gil :P

xxxxxx2222222222

at most you are talking about 2 to 5 hp at any given point. gas or temp could change more than that.. btw the ecu reset, makes it more moot.

sorry dom.. fail..


beers :beer:

It's all in your head. The human body ain't going to feel a 5 hp difference (if there even was that). Your head's playing tricks on you. The K&N is louder, so it must give you more power.

airflow with the revi will be better across the maf than the k&n. you'll get more gains with the cobb accessport if you had stayed with the revi.

yep^

Dyno charts show different.

Revi has more pull through out the range.

It may be 2 hp less only at 8 grand

How often tdo you drive at 8 grand? How long do you keep it there?

Im thinking of Revi, not that I hate my K&N, just want to try something else, you know :)

but hmm another 2-300 bux .... :(

ecu was reseted at all changes, this was done on my car and believe me if i felt a benifit from the revi i would have kept it, and that box i noticed when i drove hard and long the was real hot. overall the k&n w/rb air duct comb felt more responsive even around mid range . btw just cause the revi is a closed box intake doesnt mean you'll get cold air the whole pupose of the box was to reduce intake noise, and that box does get hot.

Plastic isn't a good conductor of heat. It's better the exterior of the intake get hot from the air in the engine bay than sucking that hot air into the engine.

i honestly dout that, have you tried this setup?

but you will still not have the coldest of air.

probably if you are not moving the revi will have better air flow, but i will tell you that when the car is moving the k&n w/rb duct will have the better affect in performance.

What are you talking about? Revi + Air duct is fine.

Having a short intake filter in the engine bay is useless. There's a reason why one of the first mods people do with FI is a cold air intake by getting the filter out of the engine bay.

At highway speeds the air in the engine bay is the same as ambient. Even without the air duct.

You want the smoothest airflow over the MAF. The OEM air box isn't a restriction to begin with, so how you expect another filter to give you noticeable gains over it is a good question.

at high speeds the hot air is not just going to linger there.

never said there was anything wrong with it. i was just posting and informing by experience. this is what i got with a couple of weeks with the revi. its a great intake i just noticed that the car felt a bit more reponsive with the k&n and rb duct.

You're short sighted. Your car is not always in motion. If you sit around at a traffic light then punch the throttle, your intake air is going to be close to 180 degrees. This can mean problems if you have serious horse power.

Moreso if you're on a track and there aren't a lot of straights.

^^^^ i know that but when your racing are you stopped?

im not talking bout on the stop, my experience with both intake setups was on the move, i was not trying to calculate how hot the air near the engine gets at a stop, im talking bout the on the move the k&n w/the rb duct felt better, than the revi.

You aren't reading what I'm saying. So it's not worth trying to explain it a second time to you.

what are you trying to say then???? you were just saying something bout 180 deg at a stop, then you puch it the air is not going to be cold, i know that.

my car is loud to begin with.

I'm saying that the car is not always moving at 70 mph. When you travel slower, heat isn't fully evacuated from the engine bay and can still build up.

yeah its amazing how you got 5hp out of this. where did you read this?

but if it wasnt releasing the heat all are cars would over heat.

I dont know guys. It is what it is. I dont go off what i read just what i know first hand. If it works cool, if it dont oh well. Sorry.

You're confusing coolant temp with underhood air temp.

Plastic is not a good heat conductor you are right, but it also means plastic will get heat soaked. Then it retains heat much longer than aluminum.

You guys are right, Heat is bad. Especially when our cars (Rotary) like to run hot.

Typhoon +++++

when left running our cars can over heat specially in the vegas heat if not moving.

this is a actual quote from the racing beat site..

"Both, but we have designed the REVi Intake with "streetability" as one of most important considerations. After careful review and testing of other available intake kits, Racing Beat has addressed many of the drivability issues that have plagued some of these other systems: rough idle, possible engine stalling, and/or loud intake sound levels.

If you are interested in obtaining maximum horsepower at the extreme upper end of the RX-8 power band (i.e. racing or high performance applications), but are willing to sacrifice some level of drivability, we can make a recommendation for an alternate product from another manufacturer."


that box is not intened to deliver colder air, its all to decrease the intake sound.
i bet you if you call them they will recommend the k&n typhoon 2, and the k&n+rb duct idea was recommended to me by one of there own at rb a good friend. =)

I think Im one with the longest history of K&N Version II & RB Duct on this forum, I got it as soon as it came out.

I like the setup. I found no problems with 100 degrees of heat in traffic. When the car moves the temp will decrease very fast.

For horsepower I dunno, never been to a dyno, I always wanted to try it but just dont have the time.

Seriously speaking, IMO, After the first version's failure(it did suck), K&N actually spent some time into understanding how this car actually works, and Version II came out. Heatshield in the back of the intake, thin metal housing(to hold the intake pipe) so it can get rid of the heat fast, Solid thick Pipe with some kind of coating on it outside, probably just color, I dont know, but feels very smooth, inside the pipe it looks kinda rough, but if u touch it with ur hand its pretty smooth. Carbon Fiber filter can resist heat better.

but again, Since I got the earliest version of the Version II, there were some problems, the install instruction are somewhat different than the current one I see online. There are couple of steps that is missing on my original manual. When I was installing the intake I was like wtf ? but then I figure it out myself. The piping angle is not very *right*, not a big deal just doesnt look as good. Im sure the one they're selling now should have better angle.

Just my opinion, dont rape me cuz I said it !

and i am sure that you would be the first to say that driving the kn vs the rb would yield no but dyno results!!!!

beers :beer:

I dont know, like I said I gotta go up to a dyno one day to know if theres any differents. Or at least get a number for my car.

Well, RB said that if ppl want the highest number, they will recommend another product. They didnt say it on their site but I think someone on this forum actually email and ask RB or something, and the reply was K&N ver II.

so .... Ahhhhh dont hit me ! :)

i will pose it a different way.. the flywheel change is a big change, but could you be sure that you could tell the difference????

the biggest thing i have felt as far as change lately is new coils and fuel pump.. big, big change.. !!!! :)

beers :beer:

well said,i too have had this setup for as long as i had the car, but have you tried the rb full intake setup to even compare it????

I can tell the FW change. it really goes up faster. But I dont think there is any power increase tho.

damn, now u makes me wanna change my fuel pump like right now :lol:

Is due soon but hmm I'll wait a bit more.

Thats what I've been saying earlier in this thread

I know I probably wont even keep the Revi, so spending 300 something bux just to *try it out* sounds kinda expensive to me >_<

maybe if I can get a bonus later this year I can think about it.

You are 100% right!!! Over a year ago I emailed K&N and got something like what you just said. Then at last years seven stock I got the samething you said!!!
I like the K&NII :)

i bought the revi just to try it out, and if i felt that is was a better suit for my car i would have kept it. thats why i told gil to post my review for me. and after i just wanted to share my experience with the revi.

Someone should settle this. Meet up with both intakes and dyno on the same car, with the same dyno. :) See which makes more

^Meh what ever. RG said that dont work ;) :lol:
Hey Mike best of 3? I'll pay!!!

noise = placebo effect..

beers :beer:

who has the revi mine is gone.

true.

but I spent soooo much money on the car .... in the past 2-3 months probably over 3K already. so .... not at this time :(

well if you already have the k&n w/rb duct, your not missing much anyway.

your butt dyno has failed you.

Dyno charts do not agree with you Mike. I dyno'd 19 rx-8's on the SAME day on the SAME dyno. 4 of the Top 5 had RB intakes...


http://i32.photobucket.com/albums/d3...st5VSStock.jpg

I'm not able to read the info of the dyno that well. But doesn't 3 of them have RB intake, one stock, and the one resulting in the highest dyno has some CAI.
Wouldn't the best way to solve this to dyno a stock rx8 with both the intakes? All the other mods in the dyno could also have an impact.