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Discussion Starter · #1 ·
Wish I had more to report, but the most noticeable thing about my new Dinan CAI is an annoying high-pitched whine. It is exactly like when you are all relaxed and about to go to sleep, but you have a little booger and it is making a whining noise with your breath. THAT IS THE SOUND EXACTLY!! Stepping on the gas is the breathing.

No, I do not hear it all the time. If I have the radio at a moderate volume then it is not a prob. If I just want to quietly drive my car - tough sh1t. No more of that. If anyone knows of a DIY to fix this annoying whine I will be forever grateful.

And yes, there is some GOOD noise above 4000 rpms. It is also at this level that there is a slight performance increase. It is slight, but I bet I would miss it if it was gone. It is sort of a bummer that the increased response is only noticeable in the higher revs (I'm not always up there). But, I guess it is good to know it's there if I ever need it.

Overall, If I could get my $1100 back I would take it in a heartbeat, but I don't seriously regret getting it.

Sorry for the long post. G'night!
 

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mY Name Is aMiLioooooooO
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1,574 Posts
i love my dinan CAI noises i get complements all the time..even on the hissing noise
 

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I got nothin'
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283 Posts
Still laughing about the booger comparison, man, what a visual. I can almost see it flapping in the breeze, clinging on for life before you give one mighty huff and it flies across the bedroom!
 

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St. Louis BMW Fanatic
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6,696 Posts
Hrmm...it sounds like you should have researched the Dinan intake a little more before you forked over the money to have it installed.

It's common knowledge that:

- The Dinan CAI makes a "hissing" sound (most intakes do it)

- The performance gains are very modest

- Dinan products are $$$


I'm not trying to sound harsh...just making an observation.
 

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3,060 Posts
Crazy, do it yourself.

Now if you make $2k a day then it is not worth your time but $200 even if it took you two days, that would be worth it.


Alan Chen said:
congrat.
i interested the dinan cai but the local dealer want charge me about $200 for labor.:dunno:
 

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TX Dinan 3
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796 Posts
i have the dinan intake right now, if i were to swap to the GruppeM would i notice any hp/tq gains on the dyno? i love my dinan intake but always looking for more power
 

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How does this compare with a Benfer intake? Does anyone have the Benfer and what do they think about it?
 

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Loves cookies
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How does it compare to the ecis intake, how would you rate in order from best to least intakes, ecis, dinan,benfer,conforti.
 

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I LOVE that hissing sound. It makes me feel like I'm driving something that's supercharged or turbo.

I've noticed performace gains all across the board with my Dinan chip and CAI. I love it.
 

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i have cai and stage 2 software,i love the power that increase to my car
at 1st the hissing sound was very anoying then i get use to it now i love that sound everytime i start my car.u gotta love dinan.
 

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Double Vanos said:
How does it compare to the ecis intake, how would you rate in order from best to least intakes, ecis, dinan,benfer,conforti.
i think its something like:

ECIS, Benfer, conforti, Dinan, GruppeM.

i dont know, but thats how i rated them.
 

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.

If you don't like the vacuum sound, you won't care for the zip bang from a turbo. My Pcar has all the jet engine whine of the big turbo, the sucking sound of K&N, the monster blow-off valve in between shifts sounds just like 18wheeler and the 3" race exhaust make the UUC sound very mild @6000rpm.

Can you visualize a 3lb booger making this sound?

 

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02black330i said:


i think its something like:

ECIS, Benfer, conforti, Dinan, GruppeM.

i dont know, but thats how i rated them.
Why would you put the GruppeM at the end of the list? Price? As far as I understand it, the gains from the GruppeM intake are higher than those of the other cai's. Anyone know for sure?
 

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ACS Fanatics
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635 Posts
Yep

GruppeM has the highest gain out of all those intakes

And also looks the best IMO:thumbup:
 
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