Today I did my own version of the resonator delete + ram air.

Here is a diagram of the stock airflow.

This is what my airflow looks like now after rerouting it and deleting the resonator.

Flexible ducting hose which can be purchased at pepboys for $30. It's 4-inches in diameter, lenght it adjustable.

Here is the stock airbox, with the resonator removed, and as well as the stock pipping. I only used the stock air box and attached the 4-inch tubing.

2 Rubber couplers come with the duct kit.

I only used one of them which fit just right.

This is how it looks like after the tubing is attached, but it's easier if you attach the tubing last, once you have it positioned into the front grill.

After test fitting it, I removed the front left grill, and started trimming the opening with a dremel.

You dont really have to remove too much, just enough for the tubing to come through.

About 80% of the opening fits through the hole.

I'm sure if I trimmed more, I could have used 100% of the tube opening in the grill area.

This is how the flow looks from inside the engine bay to the front of the grill through the tube.

And this is how it looks inside the engine bay pre-stock airbox.

After that, simply connect the stock airbox to the tube with the coupler...takes a bit of wiggling and squishing your hands in tight places, but it shouldnt be too hard. After your done with that, I used 2 zip-ties to mount the tube on the grill area. What I did was I punched 2 small holes big enough for a zip tie on the top of the tube, and on the bottom of the tube, then the same near the grill area and simply mounted it that way.

After the grill is back on, you can barely even notice it.

I had the resonator removed for about 4 months, and just recently added the ram air tube. I can notice smooth increase at speeds 25mph+, which is when the air is being forced in. This probably isnt a CAI replacement, but a very good stock intake improvement who don't want to deal with the noise and whistling of a CAI.

 

Nice write up!

 

Great work. The only thing I would worry about is the amount of water that might come in through the front bumper opening. I doubt it would be a problem unless you were following a car and had massive amounts of spray coming up. Don't think it would be a huge issue, just a thought.

 

Highly doubt that will be a problem at all. But anyways, did a few more upgrades to my intake setup. Added 3 more components.

Samco Silicone Hose 3 inch diameter, 45 degree angle.

Carbon Fiber Tubing, 3 inch diameter, .02 thickness.

K&N Filter.

 

Will post final pics later.

 

where did you get the carbon fiber tubing????
and that K&N filter????

I wanted to do a CF intake a while ago like when i first got the car. The company i was going through needed dimensions for the intake which i wasn't able to get because i didn't own one at the time and no one online could measure for me either...

but i've never seen a K&N filter like that. I just bought a F5 filter from fujita.

 

The K&n filters are the ones that start with the RX for the model number. It's a X-stream style top.

As far as the CF tubing, I located a guy that does this on the side for a pretty cheap price.
Just installed everything today and it pulls quiet nicely. No heat soak at all, but I will have to see when the weather gets hotter.

 

Hey man....

Could you post some updated pics and feedback on this. I've got some crazy ideas of my own, just wanted to see how it was working for you so far.

Thanks!

 

What is the Inner diameter of the opening in the stock airbox?

 

Hi aznbo187, I'm with subinf on this one... What have you done to prevent water from going up the intake?

It would really suck (no pun intended) if you hit a big puddle of water and hydro locked the motor! No warranty coverage for that.... ouch!

Just a thought... and if you get some time a couple of pics would be great.

Happy Motoring!

 

I haven't done anything to prevent water coming up, but it really wouldn't be a problem, IMO as the filter is actually located further up in the engine bay and the feeder hose is not directly connected to the filter...it's just directing the air to the general direction of the filter head.

 

somewhat similar to what I have in mind with the "directing of air"

 

Hey Aznbo,

Just wanted to get your latest review regarding this mod. Is it worth the work and $.. I wanted to get a cai but with the reviews regarding the sounds it turned me off. with the stage 3 now I wouldn't mind more airflow without whistling sounds or rasp. Does this enhance the sound and performance much? i agree with you regarding water getting in...not likely

 

Hey Rick,

If you followed this thread, you can see that I changed to a short ram intake with the routed tubing feeding it cold air, essentially the same concept of a cold air.

About 1 month in, I'm planning to go back to the stock airbox setup that I had originally. It may sound weird, but I don't like the way the car sounds with intakes. It just replaces the nice factory sound with the all to "generic" intake growl. Plus, I didn't like the throttle lag the intake emphasized. I'm sure there is a bit of throttle lag with the stock box as well, but it's not as pronounced as it is with the intake on.

I haven't dyno tested it to gain any HP, but really, even with a CAI, I think it gets roughly within the same 1-3HP figures. The thing that makes the CAI/SRI feel as if so much more power was added would probably be partially due to sound.

As far as sound, it adds a tiny bit more because you are taking out the resonators in the tube, but once again not much. It's kinda like the resonator mod. No one you drive by would notice a difference...only the driver does. Performance, it's the same as stock, but it feels a bit less chocked once the car gets moving and air starts going through the tube.

All in all, if you want the best of both worlds and not the noise, I think this is a fairly cheap mod for the result. If you want to maximize the most performance possible, you can go with a K&N filter that replaces the stock filter.

Only thing I might want to change is the routing tube. I'm trying to come up with something that doesn't have the ridges inside so the flow is a bit smoother.

GL let me know how it turns out!

 

thats retarded cold air intake is sick!

 

I tried to be as clear as possible by emphasizing that What I meant with that is I've gone through many different setups, including yours, and came to the conclusion that I personally didn't like it. I am aware that the majority of the people do like it which is why I said it may be "weird" coming from me.

Anyway, on with the topic.

 

Hey Anzbo,

Thanks for your input again. I just put in a k@n stock replacement filter (rectangle)
It feels like a mild power increase (1-2 HP ?) and a LITTLE sound enhancement. It's pretty mild so gauging any increases is tough. CAI (aem-fujita. etc..) are out of the question. Don't care for the sound from these units. Actually Im very pleased with my current setup (stage 3 and K@N stock replacement). I still printed your personal cold air mod for possible future improvement just in case. Thanks again!

 

I'd say if you want to do something painless, free, and easy that'll give you a bit more sound without going CAI route; just remove the resonator but keep the stock tube that attaches to the stock airbox in place. That way you'll still have a "cold air" pick up for the air but without the restriction of the Resonator. It wouldn't be too much louder but should add a little rumble under throttle.

 

Do you happen to have the model # that you bought? You have the 04-06 right?

 

Hey AZNBO,

The K@N # is 33-2299. Nice fit. BTW I have a 2004 TL . I will be looking at the res. removal, will probably do it if your recomending and its easy to remove and reinstall if necessary. (just dont want to do any hacking or lengthy reinstalls). So far you have been right on! Thanks

 

Hey Aznbo,

Hey just wanted to check with you on this one. The resonator your talking about is the lower plastic box that has the hose coming off it leading to the airbox/filter (looking at diagram at top of page). Or is this resonator in the hose prior to the airbox or in the airbox. I justed twisted my back on my dirt bike so my ability to mess around with this mod is seriously limited . Any additional info is appreciated. If theres no "back work" here I'll try it after your reply. Thankyou

 

Rick,

If you want to make the best use out of it, I suggest getting the hose extension that I bought. It's a flexible plastic ducting hose.

To remove the resonators, remove any pipping after the short segment on the intake box, which includes both square looking objects in the tubing of the stock intake. (see diagram)

Both X's are the two chambers, and then any tubing that's directly attached to it.


You will see that once you remove those two chambers, that the air box doesn't really have a direct flow of air anymore, but you removed the two chambers which gives you a little bit of sound. That is why I routed the duct to the front of the grill so it will still receive the benefit of cold air.

This won't be something you can do with a twisted back. I believe you can remove the stock air box without taking the bumper off, but I took mine off and it was much easier. Either way, there is some elbow grease involved and I'd suggest doing this in a few weeks when your better of as this could cause more injury than needed.

Hope that helps!

 

Hey sounds good. I analyzed the job and it looks fairly easy. ( I bite my tongue with the easy word) Thanks for the pics. Unfortunately I will have to wait probably 2 weekends before I can do it. A little more sound and better breathing sounds good. This sounds like it will compliment stage 3 at minimal cost, and if necessary can be returned to stock status pretty easily. Thanks as always!!

 

any sound clips? looks great

 

Have you seen when the last reply was?

 

Sky, try youtube to see if anyone has posted acura tl resonator delete sound clip.

 

at least he didnt create a new thread, and he researched

but +1 on the youtube research. I did the intake resonator delete but didnt do the flex hose to the lower grill in front bumper. I love the sound mine makes. makes the exhaust deeper and you can hear it suck in air if you pulse the throttle. Love that sound! I have pics in my thread if you want to check out what I did. I think its page 5 or 6.