Rotary Extreme

Thanks for the support.

Chuck Huang

Rotary Extreme

Rx-7 is a great car. I still have mine and I will never get rid of it. Right now I am putting on a full carbon fiber widebody kit. It will be in the magazines in a few months. Thanks for your support too.

Chuck Huang

Rotary Extreme

There definitely will be cheaper alternatives out there without all the featuers that are included with our own intake system. You can cut corners here and there to lower the cost. Our product is never the cheapest one on the market. We want to offer the products that's designed to work with all the features that we can think of, not designed to be cheap and affordable.

Chuck Huang

Omicron

Thanks for the info, Chuck. Couple of more questions for you, if I may.

1. Am I correct in assuming you will also be posting dyno results for the ram air CAI when it's done?
2. Can you please post a pic of the short-arm CAI without the RX-8's engine cover in place?

Thanks...

Jhouse

One thing people might consider in this price even though i also think it is still a little expensive, is that the cost of the machined part on the tube and the cost of the what looks like mirrored stainless steel is NOT cheap. Yes they are just small parts but the cost of R&D is also NOT cheap. Granted they proabably do have some very good resources to get the material from and just might have their own machine shop and sheet metal break but it still is expensive to throw god knows how many guys on one project in a 2 month period with the high expectation of perfection. People want perfect and cheap. Thats not an easy accomplishment in the R&D world. Sure give them 2 years and their just might be some better resaults and a little less money but by that time the RX-8 will no longer be the got to have parts for car.

Rotary Extreme

1. I expect the dyno result to be the same because I can't duplicate the ram air effect on the dyno since the car is not moving. But when you are actually driving, you can expect anthoer 3-5 rwhp gain over the short arm intake depending on how fast you are driving.

2. Here is the photos




Chuck Huang

Irish_in_a_RX8

iTrader: (1)

Looks great, love the shielding! I noticed Chuck that the K & N Protype Filters are much bigger. I wonder is there really a difference..i.e. bigger filter, more power..?

Rotary Extreme

Thanks for the support. The polished top cover already costs $60 to be done. When you little things add up pretty quickly.

I wish I can sell the intake without the top cover and just knock down the price to $200 but then this setup will not be optimal. The top cover greatly minimizes hot air getting into the filter.

The back heat shield and the top cover make big difference on temperature reduction. Besies that, the polished cover looks super sexy inside the engine bay.

Chuck Huang

Rotary Extreme

Even though the K&N prototype uses a bigger filter, it's not really going to make a difference. You only need up to a certain size.

Our V mount intake for the RX-7 uses two small K&N filters and we made 386rwhp on those. Those two filters added together are still not as big as the K&N filter I am using for this intake set up. If I am able to put the filter I am using for the RX-8 on the single turbo RX-7, I am pretty sure it will support more than 500 rwhp.

Another thing I don't like the K&N prototype is that they positioned the filter at the very front. The tip of the filter blocks the stock fresh cold air duct. I don't know how they are able to get any cold air. That's why I use a shorter pipe so there is room between the filter and the stock fresh cold air duct for the cold air to get in.

Here is a dynosheet of the 386 rwhp stock twin turbo rx7.



Chuck Huang

Irish_in_a_RX8

iTrader: (1)

Thanks for all the info Chuck!

Rotary Extreme

There is another thread on the K&N intake. It looks like their retail version does not come with any kind of heat shield. With the front fresh air duct blocked off and no heat shield, you can expect the engine to be sucking in all the hot air and lose horsepower.

Rotary engine runs very hot. You can do the test yourself. Drive your car for a while even just cruising at high speed. Park the car and immediately take off the top cover and see how hot it is. Be careful not to get burnt when you do this.

Colder air makes more power just based on thermodynamics. That's why a turbocharged car needs to use an intercooler to cool down the charged air in order to make more power and prevent detonation. Same concept here.

Chuck Huang

donald121

Hi Chuck,

I'm not sure did you answer this question or not, but my question is why don't you use your first prototype? The one with longer piping, all the way to the lower front bumper. Isn't it suck colder air than the current prototype?

P.S. Your customer service is great. Super fast shipping. I ordered the clear marker from you guys, and received it in TWO business day.

Rotary Extreme

The first prototype was done wrong. It didn't gain power on the dyno. We are still working on another ram air intake that's similar to the first prototype with some changes and it will be done around Nov 21st.

Thanks for the support. We keep those clear sidemarkers in stock for fast shipping. We always have at least 30 pairs of those in stock. Customer satisfaction is our number 1 concern.

Chuck Huang

Peakster

Do you have to take off the front bumper assembly to install this intake? When will this thing be for sale? I'm very interested.

Rotary Extreme

For the short arm intake that's shown in this thread, you do not need to take off the front bumper to install. You can finish the install within 40 min at most. All the components are already done. The only things we are waiting are the filters which will be here within a week. Currently we have 10 sets of the components made. Our machine shop can produce 20-30 sets of components per week so the lead time is very short even if we run out the first 10 sets.

On the ram air intake which will be released around Nov 21st, you will need to take off the front bumper to install. It will take about 1 hour to 1 1/2 hours depending on how good your mechanical skill is.

Thank you.

Chuck Huang

Peakster

Somebody order this thing quick and post some results!

said7

Replace that accordian tube with a straight pipe

davefzr

On your site you said that there is a 14 horsepower gain but the figures you post before and after 187 to 195 is only 9. What am I missing here to get 14 hp?

Thankx a lot...

Reeko

The 14 HP gain was at about 7200 RPM, not at the Max HP point.

islandsoon

quote:
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Replace that accordian tube with a straight pipe
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I would think the accordian would help keep torque induced rattles and vibration down and make installation a no brainer for those of us with just three wrenches.

KTM-316

Chuck,
got the sidemarkers 4 days ago. Thanks!
can't wait for CAI and your Urethane front bumper. So I guess that doesn't come painted. By the way do you have the headlight eyelids in stock right now?
Thanks

jtimbck2

Can a new intake really provide a 12hp increase? How much does an intake like this normally cost (ballpark)?

mikeb

ballpark 150

XDEEDUBBX

no a new intake will not make 12 hp..at the most it will make half of that or a little bit more..depending on what other mods you have done to your engine..

jtimbck2

(Warning: stupid question coming)

Then why does K&N claim 12hp? If everyone knows it isn't true, aren't they setting themselves up for some trouble (false advertising, etc.)?

Mikeb, are you sure it's around $150? I did some poking around after I posted, and most of the K&N intake kits seem to be more like $250.

Still seems like a decent deal for 5-6hp increase...wonder how much it adds to engine noise though...