Modify your snorkel (pics)
 

Im not aiming for any HP increase here. Just wanted to see if I could modify the intake sound.

Right now im running a shortened version of stock.

Tonight I modded another one so it is pretty much a tube only. Im gonna post these in seperated replies because this tap a talk sucks with multiple pics.

Sent from a Motorola DynaTAC 8000X

Measuring the original stock

Sent from a Motorola DynaTAC 8000X

Short version

Sent from a Motorola DynaTAC 8000X

Cut out using hobby soldering iron from radio shack. Same as used in the painting tailight thread. Could use anything really.

Sent from a Motorola DynaTAC 8000X

Thrift store oil drip pan for a few bucks. Plastic flexible yet sturdy enough.

Sent from a Motorola DynaTAC 8000X

Made some small patches

Sent from a Motorola DynaTAC 8000X

Plastic welded /tacked them into place with the soldering iron

Sent from a Motorola DynaTAC 8000X

Used this stuff which flowed very well into all the seems

Sent from a Motorola DynaTAC 8000X

Keep us posted.
Interested in a DIY application instead of a $400 pipe with a filter attached.

And done. Ill let it sit overnight and see what it sounds like in a few days.

Sent from a Motorola DynaTAC 8000X

Interesting that at the smallest the snorkel is about the same size as the throttle body. Makes me wonder if the snorkel is really the restriction that some people think it is.

There are a couple threads that I saw on that debate. I think the smaller size would increase the velocity through the opening.

Sent from a Motorola DynaTAC 8000X

I modded my snorkel similar to the first picture with just the big opening. I pushed it farther then that to take advantage of the larger diameter at the intake box end.

I am on the stock tune currently, but I noticed a difference. Low end is much more responsive and the top pulls a little bit more as well. Just a heads up to those.

Forget patching the holes and keeping the full part. Just cut it off at the 90 bend and open up the port so that it faces straight forward with the opening and be done with it.

Got any pics of exactly where you cut?

Sadly, no. I got everything back together before I remembered to take a picture. Its pretty easy once you get it out to see what I was talking about.

Here is where I cut my short one. I beleive I ended up with a 3.7 inch opening at the home made velocity stack.

Im running an airaid and dyno tuned by the former Visconti. Hoping to cut down on some up the intake noise and change the tone with the modded longer snorkel.

Sent from a Motorola DynaTAC 8000X

Got it in tonight. Much easier to get in without all the crap mounted on it. Still need to drive to get some feedback.

Sent from a Motorola DynaTAC 8000X

Ok sound is much better for me. Doesnt have the loud higher pitched growl I was hearing around 4 k wot. Deeeper sound. Performance wise dont feel much of a difference. Will log in the upcoming days to see if there is a difference. Im happy with it.

Sent from a Motorola DynaTAC 8000X

In the Software Tuning forum @shiv@vishnu was saying he took the snorkel completely off and he had reproducible gains of 2-3 hp...

not a lot but a gain is a gain, you guys could be on to something.

also to people talking about smaller = greater velocity: that's called Bernoulli's principle :)

I just got that tune this past weekend, going to take off the snorkel in a matter of days. Will let you know what I find

.ck

Has anyone tried capping the original small opening and cutting a nice long slot along the front?

I thought about removing all the resonators (3?) to smooth out the intake snorkle. I wouldn't cut it though unless I can find a way to keep the velocity stack design intact. Thx for the pics.

Not much thinking required really... it is not. But if everyone knew this who would spend $400 on the latest JDM snorkel? LOL

Modified Intake Snorkel with Additional Inlet Holes
 

Thanks to OP for the idea, @shiv@vishnu recommended removing the intake snorkel completely, but I started to rethink the idea after seeing the risk of heat soak.

Figured I'd open the snorkel a bit, but keep on the tab that bolts up the frame. A dremel will be your best friend with this mod.

Attachment 55538

Picture of back-side

Attachment 55539

Top-view, I shaved down the edges

Attachment 55540

Test-fit of the modified snorkel. With the snorkel lined up, you can peak through and see some open space leading into the engine bay. I took the snorkel a step further following the picture below

Attachment 55541

Added weather-resistent weather stripping around the snorkel to block-off any potential air seeping from the engine

Attachment 55542

Snorkel bolted to the factory location. You can see how snug the space is with the weather-stripping. I removed the plastic panel sitting below the snorkel and drilled MOAR HOLES. Why? Well, why not?

Attachment 55543

Not the best job on lining up the holes, but you get the idea. I'm sure the Toyobaru Engineers were cautious when designing the intake system, so I see no harm in making mods similar to factory specs. I haven't noticed any loss in performance/hesitation, nor can I really feel a difference? I don't want to flash my system back to stock to test this config, though the engine does growl quite a bit when I'm on it.

It's a relatively simple mod, and it will make your intake louder. Lastly, I've flashed to 1.31 beta from Vishnu, great tune.

.ck

Nice job @ck-GT86, reminds me of the mini r56 snorkel. Curious where you got the weather stripping from as I may try this while waiting for the HKS intake duct to arrive.

So far I've only cut off the 2 small resonators on the snorkel and noticed low rpms are smoother. Other than that sounds and feels the same.

Sent from my SCH-I535 using Tapatalk

Ok, I need to order an extra snorkel and try this...

I got my weather stripping from Lowe's. Home Depot may be more common around L.A., I decided against the foam-type and picked rubber.

.ck

snorkel surgery.

looks good!

Looks good! Think I'll do this the next time the bumpers apart.

So I did my own modification today, taking the ideas from this thread and expanding on it a bit...

I have a TRD intake so this might have even MORE benefit for me.

http://i15.photobucket.com/albums/a3...031_141027.jpg

First thing I did was swiss cheese the plastic blocker plate thingy a bit more.



Then I used an exacto knife and scissors to modify my snorkel. I also used a spread clamp and heat gun to spread the intake out a bit more for a more rounded shape.

I decided to keep both mounting points installed and turned half of the "tube" into a bit of an airflow blocker/director so it should send air to the intake even better :)

http://i15.photobucket.com/albums/a3...031_144155.jpg

The TRD is a LOT louder now, but its the kind of loud that only gets loud when you step on it which is what I wanted :D Haven't done any high speed testing yet to see if it helps.

[QUOTE=



Then I used an exacto knife and scissors to modify my snorkel. I also used a spread clamp and heat gun to spread the intake out a bit more for a more rounded shape.

[/QUOTE]

Interesting, will take this into consideration!

Hello friends.
.. any improvements in this area since?

I gotta do this soon...

i made my own snorkel but it doesnt clear that plastic panel that you guys drilled holes in. should i leave it off or just cut some out for my snorkel to clear? i was thinking option 2 and just cut some out

Interesting will be if pictures attached+ data log before and after may help one to decide, which solution better.
Please add your pictured results/hesitations here.
Many (include me) will highly appretiate this!

Sent from my SM-N9005 using Tapatalk 4

a few pics here http://www.ft86club.com/forums/showt...t=61439&page=2

One question before I consider this.

How will this be in heavy rain? I there a path where rain can seep/gush into the opened up intake? I drive my car in all kinds of weather and the oblique stock opening and long path to the filter may have a function there...

Take a look at the hks intake duct, not saying buy one as they are very expensive

http://hksaustralia.com.au/pdf/New%2...0999-AT001.pdf

But I would imagine hks did a bit of testing.

the other thing you may need to consider is many have reported its very difficult to get the front nose of the car to sit perfectly (panel gaps) once you have taken it off to fit /modify snorkels or oil/intercoolers.

Can you be more specific? So are you saying that the bumper wont align well when removing the bumper for any modification that requires removal of the bumper?