Could you please chime in if you have any technical expertise or a fact based opinion.

I had a DDM works intake when the car was stock and now have the JCW Tuning Kit. I miss the Blow off diverter sound and want it back but hesitate to get rid of such a clean looking intake which to this point seems to make the car run happily. To me it looks like the difference between the JCW Intake and the DDM is the maf is in a different place ( I think the JCW kit is better for turbulance) the other difference is they both use the stock airbox bottom but the DDM has an open top and the JCW has a closed top (Sealed Box). What if I cut a whole in the back of the bottom portion of the JCW airbox and one on the far end away form the inlet side. Would this have any negative effect on the ECU reading airflow I know it would cause the filter to get dirtier a little quicker but I could use an Alta or Madness Filter and clean it regularly.

Please let me know what you think and if it is a good idea where to cut the hole or holes for the best sound and least effect on the JCW Airbox. One other thought is you would not even see the holes depending on where they were.

anyway thanks for the help.

 

Instead of cutting a hole in your JCW intake.. why don't you substitute it with a normal non-JCW intake and then reinstall the DDM stuff.....

 

WHOA

deja vu ... I AM
IN
THE
SAME BOAT !!!!! haha seriously I read this post and thought, wait, did I just type this ??
I thought about cutting a hole or two in my JCW airbox after removing my DDM for the very same reason, I miss the spooling a little bit.. but love the JCW intake.
One interim option I tried was actually installing the JCW intake with the 3x wedges in the back ON TOP of the holes they are supposed to slide into, creating like a quarter inch separation between the seal of the back of the airbox and the bottom of the JCW-top.
It increased sound a little bit
But I put it back to the way it's normally supposed to be in search of a better option.
Here's what I think I'd recommend, for the both of us... (i'm in the middle of working through this idea too!)
Would it be possible to try cutting a hole in the stock airbox and seeing how sound changes ?? Adding the ALTA foam JCW replacement filter should definitely help, and maybe a small hole might .... But i'm not sure how much.
This is basically the same principle the m7 knock-out-sound-ports work ...
hmmmm

THoughts? anyone ?

 

Just earlier today I was speaking with one of my employees about finding longer screws and fabricating some spacers to open up the airbox about 1 inch all the way around. Do you think if the box was opened up all the way around rather than just the back that could provide the sound we are looking for. My goal is that it would be 60-70 % as loud as the DDM. How is the clearence between the stock box and the hood. Would I be able to raise it one inch. I hesitate to cut a whole in the JCW airbox for warranty reasons but I don't see how that would negativley affect anything but the dealers can be strange. It would be exactly like the M7 tuning ports. I plan on doing alot of this on Friday Evening I will let you know what I find out. If you come up with anything let me know.

 

Just my two cents. I like this idea. Couple things to check and do.

1) A foam filter would be a good addition at the same time. Makes more HP and might allow the noise to play better as well.

2) To get the addl. noise I agree drilling holes in the JCW box may seem sacrilegious, but it should work.

3) Before you make the spacers (I like this idea better BTW as it is reversible.) be sure that the box can go up an inch without hitting the hood or something.

No matter what you end up doing, report back to us how it all worked. I think others will be curious!

 

Why did you guys get rid of the DDM intake?I was thinking of getting one.

 

DDM is a great intake, just wanted the JCW designed one, it's a very good design IMO and honestly it felt slightly, very slightly, more responsive with the kit. Not nearly as much sound as DDM though, which is why we have this thread
It's not bad at all (DDM) so if you are looking for an intake, go for it!

 

ADAM
+1

i like the foam filter idea, and i don't think hood clearance should be a problem !! maybe 1/2 inch spacing instead ?? ....

Definitely following this thread! Let us know

 

The Maf is directly behind the filter. And when I say directly I mean directly. In theory this could create some turbulence. The other thing is because it is so close any residual oil that flows off the filter will get on the MAF. I also felt a slight improvement in smooth throttle response with the Stock R56 Box and Alta Panel Filter. The Alta Panel Filter will add a little Diverter/Blow off sound but not much. The reason it does increase the sound is because it is made of foam rather than paper and it is thinner.

 

hey adam how much is the foam JCW replacement ?? on your site a while back it was 79 i think but on the phone the gal said no it was 69 ... let me know !! (i mean, tell me the lower price! hahahah)

 

Let do $69.99! What the heck!

Ring me or pm me if anyone wants to take advantage!

 

Do you mean directly in front of the air filter?I thought the air flow reaches the MAF before the filter?

 

I must be missing something.

Why would you want to take an expensive JCW airbox that is designed specifically to be quieter than others, and make it noisier?

Why not just disconnect the opener mechanism and leave the flap open all the time?

I'm assuming that you are using an aftermarket gauze cone filter in the JCW, such as a K&N or Mini-Madness, as you won't get much more air through the horrible stock paper JCW filter even if you took off the top of the airbox entirely.

 

edit: never mind, first gen. vs. second...

 

I think you are talking about a different car. The R56 JCW Airbox is silent. I just want the turbo Diverter/Blow Off type sound to match the exhaust. The exhaust is mild and I would like the airbox sound to match. It will not be loud but may sound good.

 

Right you are - sorry - thought this was in the 1st Gen section. Told you I was missing something...

6^(

 

The JCW Airbox For The R53 Is Awesome and I only wish they put half the effort into the R56 JCW Box

 

Any more info/updates ?? ,....

 

I shimmed the box up about a half inch all the way around but that did not provide enough sound. It also get very hot in the front of the air box so I did not like sucking in hot air. I ended up cutting two holes about the size of a silver dollar out of the back and one out of the far side. With the new foam filter and the wholes it sounds about 70% of what the DDM works sounded like. If you are looking at the box from the front of the car it looks completely stock but sounds good. You really need to look in the engine bay at a sharp angle to see the wholes. Anyway, I wish I did not have to cut it out but it seems it is the only way. If I put a couple ports in the top of the box it would probably sound very similar to the DDM Works but then I would loose the Factory Stock Look.

 

I never used my JCW intake. I kept the DDM for several reasons. One, I'm not sure if it's better or worse than the JCW but more importantly, I installed an M7 brace and strut defender and had to cut the top edge of the DDM to make it fit.

Needless to say, I didn't want to cut open a brand new JCW intake.

It runs great, sounds better and I get to use my brace. Works all the way around for me.

Mark

 

Hmmm... Very good to hear your results ! Just what I was looking for.
Now...
To cut.. or not to cut ....
ehhh.... I have to push my self to do it !

 

I got a similar result by cutting openings in the original lower half, about 6 rectangular slots between the reinforcing ribs. Gives a bit more sound but not as loud as the open intake that I have. I use the JCW in wet weather months as it tolerates water better than the open.

The advantage of cutting slots in the lower half is that it leaves my JCW upper completely original.

 

AHHHhhhh... you mean the bottom half of the airbox GREAT idea.... now i don't have to worry about cutting into my JCW ...
hmm...
What did you use for cutting? template? ... I mean, it doesn't seem too techincal of a job but I also don't want it to look like a rat chewed it's way out of my airbox .... ... It's true i don't look back there much, but ... I'll know what it looks like in my mind...
ooO ooo ..

 

Air saw....

Mark

 

I can't remeber but did,nt you have the DDM Works Intake before also. After cutting the holes in the bottm of the airbox could you let me know what percentage of sound is present in comparison to the DDM. I have a feeling just cutting the bottom will yield less than 50%. If it does increase the sound drastically I may cut wholes in the back and side of the bottom as well. My JCW Intake now sounds about 70% as loud but 80 or 90 would be better.