>>>>Also, did Eric mention what helps this intake to make power?
>>
>>Dgs,
>>
>>It appears that it's simply the larger surface area that distinguishes this from the others. I'd bet Andy has numbers on the pressure drop across other filters and could estimate a theoretical gain.
>>
>>BTW, you've hit on the point that vendors need to focus on. There's a lot of free space (well--not a lot) to work with to eliminate some obvious intake tract restrictions. We're still just scratching the surface with these variants.
>>
>>Jeff
>>


Jeff,

If it is a custom filter maybe that may have something to do with it in regards to filter flow. I think the fact that the filter sticks into the cowl area may make a big difference. It opens up more surface area to a forced air flow. the other ones have a cap at the end of the filter that is close to the cowl, therefore no air is forced into the filter, it is swirled around in the air cavity and then sucked into the filter. I wonder how this works with cowl scoops. Do we see more of a performance increase. In my opinion you want to see the most amount of air pressure in the air intake tube. This not only pertains to the flow characteristics of the tube, but also the air before it gets to the filter. Maybe Andy might have the air pressure within the intake tube. I haven't seen anyone show those numbers. I would assume a higher pressure in the intake is just as positive as a higher pressure coming from the supercharger.

 

I just went out to my car and checked. The top is NOT capped off and it a usuable part of the filter. I think that this would definitly help with increased airflow.

 

thanks Slapey. makes a little more sense to me now.

 

>>thanks Slapey. makes a little more sense to me now.

Glad to help out.

 

>>... does the intake have an opening at the top to pull in air from the cowl area or is it just capped off like the Madness?

Is Madness no longer using the S&B filter with a velocity stack?

 

all filters do not filter equally. The particle size allowed through and the flow rates for given pressure differentials are important factors. For years I always used K&N. Back when I had a 1988 M3 there were discussions on Roadfly dealing with filter materials. My recollection was that paper filtered best, that K & N did not filter near as well.

Here's a link to guy who discussed airpressure drops for different filters - conclusion was BMW paper worked best in terms of reduced pressure drop.
http://www.bolhuijo.com/airflowtest/

Andy@rosstech did some pressure tests. If memory serves correctly, he found that there is little to be gained with change in intakes.

My recollection is that K&N is not the best at filtering particulates, but maybe someone has test data to compare oiled foam (Alta), oiled cotton (K&N), green (oiled cotton?) and paper.

 

>>
>>Andy@rosstech did some pressure tests. If memory serves correctly, he found that there is little to be gained with change in intakes.
>>

Little to be changed with current intakes. Yes, but I would like to see someone blow the socks off a design. All of these seem to be copies of the same type of design. I would still like to see some more forced induction into the air intake. Forcing the air into the intake has gotten to be the same affect as the supercharger forcing more air past the intake.

The link I had above showed the SSR intake and it uses standard type intake materials. It has been praised for being a unique design and performing exceptionally well. We have a lot of room if we take out all the convoluted piping to do something like this.

Everyone here complains about the smallest little kink in a bend on the exhausts, but no one says anything for the massive twisting of pipe through the intake. If someone designed an exhaust that looked like our intake path, everyone would think they were crazy. How is getting air into the engine any less important than getting exhaust gases out of the engine.

Maybe I am way off here, but logically thinking through it doesn't make sense. The Camaro throws on a functioning Ram scoop for the air and the car gains 15hp from the manufactuer. The same has to be true here. Anyway, these are my thoughts on it.

 

>>We do our testing at Helix. Our intake was able to make power on there dyno at about 3 HP (with out the cowl mod) which was on par with the Alta and K&N. I do have the charts from helix that show the gains, and at about 150, it doesn't get much cheaper then that.

On the webiste it sez

"Pilo Racing MCS Cold Air Intake
The Mini Cooper S has a very twisting intake design so getting the most airflow through the filter to the Supercharger is very important. The Pilo Racing Cold Air Intake replaces the restrictive stock filter element with a custom stainless steel heat shield, and a 6" x 7" Green Filter cone filter element. Dyno testing showed us about 6-7 HP at the wheels. (Ships in 1-2 weeks) Required cleaning is ever 10K miles. We now include a cleaning kit on all new orders. "

Which is it? 0 or 3 or 6 or 7 or another number. Some dyno charts might help clarify.

 

All of the above. That's the problem with different people and different dynos.

 

FYI,

The only intakes I have tested are the stock one with the original paper filter and the Alta intake. With a 15% pulley, the Alta definitely has lower pressure drop than the stock intake, by about 0.5 psi at redline:

).

One thing that definitely does NOT make a measurable difference is a drop-in filter. Pressure drop across the stock filter is so low as to be almost unmeasurable with normal pressure gauges. Any replacement filter will have SOME resistance to flow, so even if it flows 50% better than the stock paper filter (not bloody likely) that's a difference of 0.07 psi (way less than 1 hp).

As far as dynos of filters, they are valid if done in a comparison sense (stabilize temps, dyno the car with one filter, stabilize temps, dyno the car with another filter). But dynos can never effectively reproduce road conditions.

I plan to do some testing with and without a heat shield to see if the final temp of the air in the manifold is actually affected.

 

>> All of the above. That's the problem with different people and different dynos.

Exactly.

On a DynoJet Dyno (free wheel Dyno) Randy at Webb Motorsports showed between a 6-7 HP Gain.

On a The Mustang Dyno Meter (Variable Load Dyno) at Helix done by Eric, we saw gains of about 3HP (closer to real world gains).

He mentioned that this is one of the few intakes that made HP on his dyno.

Each dyno will show diffrent gains depending on the method by the tech, or the type of dyno that it is. This causes diffrent numbers to be shown. I have always used the numbers given to my by randy, because most people seem to go off of his numbers as he has tested just about all the filters.

If you have any questions about how we test products, please let me know. I try to give as much info as I can.

 

The website says this now "According to RDR dyno tests conducted on 4/6/04 the RDR Intake out-performs a leading brand intake by 4.2 hp on a bone-stock MINI. "

So what does that mean? What's the total HP?

Anyways, anymore user comments on performance or sound?

 

I don't know if I mentioned this already, but it is certainly very loud.

 

>>The website says this now "According to RDR dyno tests conducted on 4/6/04 the RDR Intake out-performs a leading brand intake by 4.2 hp on a bone-stock MINI. "
>>
>>So what does that mean? What's the total HP?
>>
>>Anyways, anymore user comments on performance or sound?
>>
>>
JBOO:

Please allow me to get one on my car and dyno it before I post the dyno charts. Although I explicitly trust RDR and their dyno methods and numbers, the charts that I received from them yesterday are bordering on too-good-to-be-true. I should be receiving the next batch today or tomorrow, including one with my name on it. Before I put it on my car and dyno it, I promised that Andy@RossTech could do some datalogging with it, so I'm sure that you'll get some graphs from him as well. This will take a few days...

 

looking forward to them, thanks!

 

I think you are talking about this:
:smile:

Cheers
-ABT-

_________________
2004 MCS Dk Sil/Wh Milltek catback, Alta 15%, Alta CAI, Alta IC div, Alta springs, Alta 22mm rear sway....

 

What happened to this thread? Any update on this intake?

 

Bump. Ever get around to testing these? Just curious what the final #s were. TIA, Jeff