Wow, let's start a thread about the intake and not the bashing of Rotory God and the manufacturer.

The low power acceleration this unit gives the RX 8 is unbelieveable. If this is any indication of what a light flywheel is like I have to buy one.

The idle is perfectly smooth. I have the M flash.

More power in 5th and 6th gears means there's no need to down shift now.
In fact you can stay in a higher gear with less RPM and be able to drive it like an automatic. Hope to see a milage increase.

 

4 to 5 hp i dont think you would feel that amount of hp .it all in your mind.

 

true..although you may feel the better idle stuff.. and better off the line acceleration...ive had numoerous intakes on cars and none make noticeable gains other than smoother idles and louder noises giving the effect of more power..

id still buy it for the awesome intake noise that ive always loved and the smoother idle ..

 

that makes 2 i bought mines already

 

Can you feel a tenth of a second difference in the 1/4 mile?

CRH

 

^^I dont need to feel it as long as the guy in the other lane does! :D

 

Well, each tenth is about a car length at the traps and I tend to think I can feel the difference with the different experiences I have had drag racing. After a while we get to know our cars on an intimate level and can tell how it is running, one race to the next. In that context, I think that those who believe 5 h.p. is not worth pursuing are selling themselves and their cars short. The question is really one of cost and if there are cheaper ways to find the 5 h.p. in question. Even in that context the choices for obtaining a legit "5 h.p." are slim out there. I got lucky in that I was able to eliminate the issues with the R.E. intake that others complained about and may have actually seen a slight increase in power with the cheaper intake system.

CRH

 

and most people talk 'peak' hp, anyway...if the intake allows the engine to make 15hp more (than before the intake) between 3000-5000 rpms, but only 5 peak hp more, people say things like "You only got 5hp!"

No...'they' got 15hp. 15hp or 10 hp is just that - regardless of where in the powerband it's made

 

That's all true. Like the light fly/pulleys, the argument of peak versus average torque has made it's way around the board. That's the beauty of the "N" flash; it doesn't necessarily raise the peak torque level but it really helps the torque/driveability below 6K, where it has been said that the Renesis needs the help. The ironic thing, for some anyway but not me, is that even though the N has greater benefits below 6K/WOT I and others have measured as much as a 4-6 tenths reduction in our 1/4 mile times. I would say the N is well worth it and so would those others who have it. Through these examples your point is not only made but so is the argument that 5 h.p. is worth the pursuit for some(provided no major loss in driveability is the result).

CRH

 

Ill take 5 hp throughout the curve over 15hr peak anyday!
olddragger

 

does anyone know for sure what it is

 

I have read everyhting on Racing Beat's website in regards to the REVi. I can not find any HP claims, from them, on the website. Has Racing Beat actually reported the true HP gain from the REVi? If so what is it?

 

It is definately for performance, it changes the effective length of the intake tract for high rpm tuning (resonance), or at least it's supposed to. But by redesigning the airbox, perhaps they (RB) no longer needed it.

 

its backward thinking like-"they made the low power motor so they could put an automatic in it." which is wrong because they were always going to offer the low power- it just happens that it was preferable for the auto because the hi-power broke the t-convertyers.

so- mazda wanted to have a really good performing intake PLUS they wanted it quieter. so they made it a true cold air with the straight ram of the vfad PLUS the longer length of of fabric hose. this allows them to keep it quiet AND tune it for when they need the extra air.

by removing this vfad unit, enlarging the air intake opening getting a better flowing filter/horn combo racing beat is able to offer an intake that is more responsive provides a little more power but is louder than what Mazda wanted to come out of the factory. not terribly louder mind you- i like it

 

The price is a little painful, but it does seem that everyone loves this thing. RB is a very good company. I'm learning people...little by little...

I love a good HP per $ but there is soemthing to be said about a good balanced power band. If RB's intake gives you a smoother idle, 5HP accross the power band, a slight fuel economy increase, and can cut some time off of acceleration it might be worth it.

I wish it was a little cheaper $250 sounds OK, but I guess by the time I get involved things will be much cheaper.

I don't got the money (nor do I want to mess with my car yet) to get these toys but I thank you all for sharing your experiance with RB's intake. I can't wait for the day I start tuning but I have ALOT to learn that's for sure.

FYI, My birthday is on June 15th....just in case anyone wants to send me a RB gift in the mail....LOL!!!!

 

I think once I get some data on some changes I am currently making I will, once again, compare the performance of the factory airbox to the R.E. unit I have that seems to work well. I need to make sure that my perceived gains are not psychsomatic. If I could afford it, I would do some G-Tech runs with the R.B. intake in the mix as well.

CRH

 

Is that 250 price for the box and all or is that a price for a Cone filter and pipe kit

 

Neither...it's $320-309, but I think it's for a complete kit.

 

Its 320 and its for the whole kit

Check it out here for youself
http://www.racingbeat.com/FRmazda4.htm