I know there aren't a lot of Defenders of Speed CAI clips on YouTube so now that the weather is nice again in California, I've finally gotten around to recording and posting some videos.

I worked with Clint over at Defenders of Speed and the experience was more than wonderful!

Here are some videos. I don't have any other mods besides the intake so exhaust etc is stock.

 

Love the downshifts on that first clip.

Glad that you like the CAI and thanks for posting.

This is the perfect start to my weekend!

-Clint

 

Hmmm

I'm a bit confuse.. Do you have a BoV? Does the CAI make that "hisss" sound everytime you shift up?

 

No the car doesn't have a BOV, that is just the nature of the intake.
Since you cut a hole in the bulkhead panel you can hear the intake in the cabin more prominently.

It's loud but that's the way I like it. They sell noise baffles for people who want it quieter.

 

From the second clip... there is some noise, kinda like an airplane engine idling (Its the first thing that came to my mind...)

btw... that "hisss" sound is that supposed to be very quiet on a stock car?

 

If I'm understanding your question right, there is no hissing sound on a stock car...that is the sound of the intake sucking air in.
And the engine idling sound you mention that is also from the intake, but I think the camera picks up that sound more noticeably than when you are actually sitting in the car.

 

A stock Cooper S does have a BOV, it just blows back into the intake instead of into the air. If you listen close a stock car will make the sound quietly. The reason you can not hear it good is because of the factory air filter and intake tubes quiet down the noise.

 

It is my understanding that the sound you hear on a stock car is from the factory noisemaker not a blow off valve.
As far as I know MCS just has a bypass valve and the sound from that is way too quiet to actually hear in the car.

All the sound you hear in the video footage is from the DoS CAI!

 

You and 2008 Cooper S are both connecting the dots.

The sound that you're hearing is the factory blow-off solenoid (an electronically actuated recirculating BOV) going off. This sound is largely masked by the factory airbox or 'intake muffler.' However, it's revealed with the DoS CAI.

 

hmm might need to check it out, because my Napoleon hissing sound is somewhat loud.

anyway thats very cool video

(regrets having to wait 2 years till I can do anything to Napoleon)

 

Did you notice any improvement in performance or just noise level?

 

I definitely felt some performance gain, especially in the responsiveness.
My butt dyno also says so!

 

I think I would get tired of listening to that in a very short time.

 

I love it. I guess it's not for everyone though. He does sell a baffle for the more refined Mini owner...

 

I absolutely love that sound. MINI Coopers are performance vehicles so turbo noises should come with the territory. Too bad so many MINI owners complain so much about the sounds MINIs make that MINI USA had to take out even the small burbles from the exhaust, so of course the turbo noise will be muffled.

Clint, great work on the CAI and I cant wait to get one. Even if it takes a few years. :D

 

Refined is such a subjective word.

The baffle is there for folks that want all the benefits of our CAI with less CAI-based audio. About 40% -to- 45% of DoS customers buy the baffle. To each their own. . .

 

I bought the baffle and the result is a sound that is perfect - not too obnoxious for the spouse, exciting enough for me and the kids.

 

wow, it's significantly quieter in the Cooper S than in my JCW. Mine sounds like an old man on the verge of snoring into a megaphone.

 

There's an image that would make me want to buy a product. I'm amazed that you weren't a marketing major at University, Elie.

 

lol, sorry Clint. It's so loud, but I imagine buyers of JCWs probably would prefer loud over soft.

It sounds awesome, sucking very loudly till about 4.5kRPM, then it just sorta has a ringing sound the rest of the way to redline.

If I can find a high quality microphone, I'll try record the sound from the inside.

 

It's OK Elie, I'm just giving you trouble.

We're happy that this product is delivering on its performance claims. It's also cool that lots of folks are liking the sound as-is. As mentioned above, DoS has a 'significant other approved' noise baffle available (that does not rob hp), so it's OK to tame the audio effect of the CAI without making a performance sacrifice.

 

My car sounds a lot more aggressive then the original poster. I will assume this is do to the Helix intercooler and hard boost tubes.

 

Wow, the first thing that came to my mind after hearing you shift was "interesting!!" I still hear remnants of the DoS on the hard acceleration but the flutter you talk about is something totally unique!!

Also it seems that the camera is placed closer to the hole that you cut in the bulkhead panel to hear the intake too. The camera I had was suctioned to the passenger side window. But yes, all the other mods you have amplify things quite a bit I'm guessing!!!

Awesome sound though!

 

hey onefish, ...are you going 90mph w/ one hand on the camera?!

 

I was wondering that too . . . MINI owners have a very healthy sense of adventure.