Porsche 996 911 free mod! | Helmholtz resonator bypass

[@t.o.5398]

Let me set one thing straight . This intake mod works fine and has no issues with the electronic ECU etc ! The intake noise is a little more intense above 4000 rpm .. witch is very nice and satisfying to anyone who likes that kind of extra noise behind your ears ..😅 Actually I measured my performance speed on my 100-200km time with a 2 tenths of a second better than before .. And yes , someone said , that those engines are fragile ! That’s quiet right !! So in order to keep those engines long lasting ( keep aside other issues such as IMS and so on ) there is a need to warm up that motor !! That will mean , drive for approx 10 miles , so that your oil gets about 80 degrees Celsius !! And then you can start reving over 4000 rpm . Happy drive to all 996 lovers 🙏🏽😇😅 Same conditions and almost full tank .

[@CarPlebs]

Very wise words my friend

[@wesleycarusos8225]

There is definitely a performance gain. I was prepared not to have one and was pleasantly surprised

[@fairfaxa]

Did this to my 97 3.4 Manual 996 Carrera ... it is certainly an improvement. Bit like the equivalent to a gruff voice after a big night out, or th slight bass you get when you're getting a check cold ... it's an improvement worth doing, and you keep the stock look!

[@colombi51]

Did this today to my 03 Carrera 4 Sounds great! Cost me 9 bucks for a bottle of oil! Thanks for the hook up!

[@CarPlebs]

My pleasure! Glad you liked it! 😀

[@georgem5589]

Your black 996 looks really cool, luv it. I'm going to try this on my car. Thanks for posting this!

[@CarPlebs]

Thanks! Today I am posting a video on top 5 bad car industry trends, I am getting ready to get some flak there :-D. Have a great Sunday!

[@bpago]

The stock is ribbed and that slows down air flow … the “ugly hose” is ribbed and slows down air flow. To do this mod at its best is to use a smooth hose, cap the helmholz box opening … AND remove the helmholz box . . Now you have smooth flow to the TB & actually increased the available air in the air box .

[@andychilds5943]

I tried multiple combinations including the just "cap". The best is the silicon tube, with all the resonator parts removed from the airbox. I used a black plastic plumbing fitting and cap to seal the hole left in the airbox(It is a 40mm water tank fitting). Just take the lid of the airbox into the shop. This sounded the best but also help remove the obvious torque dip around 5500rpm.

[@CarPlebs]

Awesome glad to hear. However I have heard that it might decrease performance. I will take it to the dyno soon to see how it does, I will also run it without the resonator capped off. So hopefully I will know more!

[@tonytsang3962]

You are trading more noise with less air/torque, when the intaking is in resonance, energy is wasted as induction noise. The primary purpose of the resonator is to improve air flow & secondary any unwanted acoustics. If you like the noise then it’s your choice! It’s a common misconception by marketing mis-information.

[@SF_Native]

It's the "if it's louder I am must be going faster!" theory.

[@CarPlebs]

Thanks! What I read about it online, this btw confirms that wiki is not the best, that it’s mainly due to sound. Interestingly on my 997 I have not seen a similar contraption on the air box with the x51 package

[@911obsessed]

The intake note on engines does not come from the airflow itself, the sound comes from the combustion chamber through the ports in the head into the intake manifold and makes it's way out through the throttle body/intake. It could be argued that energy is wasted in trying to reduce the sound (just like mufflers reduce sound at the cost of power). Almost every production car has some sort of resonator in the intake with the purpose of reducing NVH, it is not there for improved airflow or power. High specific output naturally aspirated engines in cars such as the GT3, E46 M3, E90 M3, etc. do not have any resonators on the intake side, they are designed for airflow and power and as a result scream!

[@wesleycarusos8225]

​​@@911obsessedbingo there is absolutely definitely better throttle response after this mod. I actually couldn't believe the difference. I had to go drive the car some more.

[@johnireland1629]

Very cool. Thanks.

[@CarPlebs]

Glad you liked it!

[@Wantobe123]

Hi. Love the mod. What is the OD of the cap. Thanks ahead. I found a 1 quart bottle that is tan with a red top. I’d assume that will work.

[@alfredomendez3841]

Will this plug work for the 997.1? Where can I buy it?

[@wesleycarusos8225]

Alright let me just start this out by saying I did the muffler delete modification. Not only was it loud but I definitely lost bottom end. I Removed it....I did this mod yesterday and not only does it sound better and raspier although not a whole lot louder there is definitely a performance gain at about 3K. The car is more responsive and spools up quicker. This is not my imagination as I had a really loud muffler on it and I noticed it the car slowed down. I am so happy with this mod my car so much more fun to drive now. I wish somebody would do a Dyno and some 0 to 60 times I'm sure there is a gain although maybe small you can feel it in the seat of your pants..996.2

[@TruckHubPanama]

wow it really work thanks CARPLEBS

[@DK-jb2ut]

That seems fun! ! What kind of oil cap is it?

[@CarPlebs]

Castrol 1L/1Q

[@johngreen8693]

Or buy a £10 metal/ plastic bung that blocks the hole but also allows you to remove the bits in the airbox. Great idea though.

[@CarPlebs]

With regards to the bits in the airbox, I have read that its frankly speaking pointless, that given the volume and speed of airflow increasing the volume will not yield anything. I was going to go the route of finding an spec plug/bung but couldn't find anything here in SK.

[@noavgdrvr1]

very smart Mod!

[@CarPlebs]

Thanks! I was so surprised when the oil cap just slid in ;-)

[@victore92]

Is this applicable for the 986 Boxster first edition as well?

[@CarPlebs]

Did a quick google check and I believe not.

[@victore92]

@@CarPlebs thanks for the reply. Didn't find anything my self either /:

[@CarPlebs]

Other than that, how is the 986? I am thinking about my 3rd, either a 986 or 944

[@victore92]

@@CarPlebs It's a great car and my daily. Every drive is as enjoyable than the previous. I've done some mods to it, and made it a bit more noisy, hence the question. I also daily drove a 85.5, 944. A blast to own and drive. A very practical sports car with the folding rear seat and the the boot space. Get one that has done the clutch. The rubber ones from factory are a menace after a few years!

[@CarPlebs]

Thanks allot !

[@stephan5593]

Thanks bro! It works 👌👌

[@CarPlebs]

Gr8

[@j.d.4681]

Will this work on a turbo?

[@CarPlebs]

I believe not sorry

[@INTERNA9]

WOW!!!!!!!!!!!!!!!!!!!!

[@CarPlebs]

:-)

[@johnminot7494]

What size Castrol oil cap did you use quart or 5 quart?

[@CarPlebs]

Quart 🤟

[@jasonwalsh9211]

Glad it's worked... rarely get anything for free. Do you still have it fitted or had any issues since this mod?

[@CarPlebs]

Nope none at all :-)! I have heard that some people have issues with idle and error codes but nothing happened.

[@francoisvisagie3780]

Hi, what is the possibility for the cap to be sucked into the trottle body, it seems to be after the screen in the MAF sensor area ?

[@CarPlebs]

The pressure of the intake “suck” the cup down via vacuum, hope this helps!

[@francoisvisagie3780]

@@CarPlebs I will have a good look again, but my view is that the air enters from the bottom below the filter, exits above the filter ,mainly via the main tube and via the MAF sensor but also up via the smaller tube that will be part of a venturi effect created by the suction from the intake area . perhaps the plastic box fitted inside the air filter box directly below the smaller outlet blocks the airflow but I struggle to see that the suction is downwards and not upwards?

[@francoisvisagie3780]

BTW , I did mine last week and love the noise from 4500 rpm upwards. Afterwards I started to ponder on the airflow path and the possibility of disaster.

[@CarPlebs]

Well I have driven as such 1000+km, many times 6000+ rpm, but that is my experience. Also upon installing the clamp is tightened down.

[@CarPlebs]

@@francoisvisagie3780 Hmmm.... I have spent some time on the topic by searching for the mod name + "suck" or "suction" and saw some people worry about the topic, however many more enjoying it and not worrying checking it after many months with no signs of wear. You could as a remedy tighten the "Y" section with another clamp to 1000% prevent the cap to pass through. Or you could remove completely. I will personally keep it as is.

[@bernardgruz524]

Super,je vais essayer

[@Mansatou]

Ou trouver ce type de bouchon ??

[@Get10Yards]

Interesting hack! Saving for the IMS to be done? Are you having that issue or just planning to do it anyway?

[@CarPlebs]

Thanks! Honestly I have no indications of it needing to be done, so rather not. I meant more that why bother with spending money on pointless upgrades when that budget could be better spent elsewhere. :-)

[@larryg5417]

Ha Ha... @2:59. " I like to keep things stock", so, let's talk about capping the resonator... ha ha....

[@IAnonymous3]

😂😂 .

[@sgttombailes3380]

I digress! It is fun~~~

[@TheCalduggs]

Some dude did this and the plug sucked free and into the throttle. Don't recommend.