my custom air intake resonator delete

[gx470]

Hello,
I just wanted to post some pics of the set up I just built. It eliminates the two resonator boxes attached to the intake tube from the air box to the throttle body. Overall, I'm very happy with the project and the results. I did this modification because I wanted to have a little better air flow and efficiency. I do not expect high horsepower gains or high mpg increase. What I was looking for was less turbulence in the air overall for smoother power transition and maybe increase in v8 noise when I'm under throttle. That's exactly what I got and I'm very happy with it. Just wanted to share

 

[calvinv8sr5]

Is that a filter attached to the air box?

live action!!

 

[mrpurplepenguin]

I was under the impression that the resonator chambers help increase torque and throttle response at low rpms(?). Are they only for emissions or some other purpose?

Why did you cut a hole in your air filter housing? Doesn't that suck in hot post-radiator engine bay air now (instead of cooler outside air from the passenger wheel well)?

Looks like a clean intake track, if those mods are legitimate increases in performance I might follow suit...

 

[calvinv8sr5]

I was under the impression that the resonator chambers help increase torque and throttle response at low rpms(?). Are they only for emissions or some other purpose?

Why did you cut a hole in your air filter housing? Doesn't that suck in hot post-radiator engine bay air now (instead of cooler outside air from the passenger wheel well)?

Looks like a clean intake track, if those mods are legitimate increases in performance I might follow suit...

I know on the older trucks I used to drive I talked to. Gm guy that said the chambers are for the intake sound, that polls show the majority of people don't like the engine "swoosh" noise at wot so they chamber the air intake, never heard anything about torque, might be on to something there

live action!!

 

[DZNUTS]

Subscribed. Post a parts list??

 

[Inv4drZm]

I've been wanting to do something like this, just haven't found the time.

What are extra tubes connected to the stock resonator section and how exactly did you reconnect them to the main tube?

 

[4OYOTER]

Is this on A 4runner or GX?

Are the engine covers interchangeable?

 

[ZiaMan]

I was under the impression that the resonator chambers help increase torque and throttle response at low rpms(?). Are they only for emissions or some other purpose?

Why did you cut a hole in your air filter housing? Doesn't that suck in hot post-radiator engine bay air now (instead of cooler outside air from the passenger wheel well)?

Looks like a clean intake track, if those mods are legitimate increases in performance I might follow suit...

You are correct that resonator chambers help: What Does an Air Intake Resonator Do? | eHow

Is this on A 4runner or GX?

Are the engine covers interchangeable?

Guessing it is a GX based on his name.
[MENTION=78727]gx470[/MENTION] Can you post parts for you intake tubes?

 

[BlackWorksInc]

[MENTION=78727]gx470[/MENTION]

What was the reasoning behind bypassing the factory CAI set-up and making it a "hot air" intake? The inlet and tubes are designed for the proper airflow and throttle body diameter, so it wouldn't provide any increase in airflow.

 

[gx470]

Sorry for the delay.

This is for my 06' gx470, same 4.7l engine as you guys. I did this modification for two reasons 1) sound 2) experimentation.

I did not expect or plan on on major hp gains or mpg increase. I mostly wanted a little more v8 growl and I wanted to experiment with doing things that didn't cost me much and that I could easily reverse and put back to stock form.

I started with cutting a hole in the air box in the front, then on the side near the firewall where the cold air comes in, and then a small hole in the back near the firewall. I did not cut it open near the engine. Yes, I am aware that I am sucking in warmer air but I also remember the days of me having an open air element in my mr2. I forgot to take intake temp readings before this mod but I did after. For the most part, when cruising around my intake temp reading is very close to what the what the ambient air temp is according to my dash board thermometer for outside temp. I am using an obdII scanner with an iPhone app to measure air intake temps. If the ambient air was let's say 85 degrees, I have seen my air intake at highway speed be the same number or sometimes a little higher like around 88-90ish. Now, at a stop light, I have seen it go up much higher, but I believe that is normal operation.

Then I did the rear exhaust resonator delete and then the AFE drop in filter. With these mods, I got a little more growl during heavier throttle and very little sound difference with cruising around. It was a nice, tasteful difference. Then I wanted to experiment with a modification that is similar to the AFE CAI or the TRD CAI in which those tubes are replaced. So, I made my own for around $50.

I got a 3.5" tube on eBay for $22
90 Degree Aluminum Turbo Intercooler Pipe Piping Tubing 89mm 3 5" Length 600mm | eBay

then 2 3.5" 90 degree elbow couplers for $22
3 5" 4 Ply 90°ELBOW Turbo Intercooler Intake Silicone Coupler Hose T Clamp Black | eBay

then this vacuum sensor adapter kit from advanced auto for $8:
Spectre Vacuum Sensor Adapter Kit 8711: Advance Auto Parts

I noticed a sound difference with this mod too, just another tad tweak from what I already did. Overall, unless it's placebo effect, which I acknowledge it could be, I like the sound, and I think the truck is running very well. I had no problems before, it was always smooth but now if feels like it goes down the road a little easier with less throttle. I am mostly easy on the throttle anyway so I'm not trying to increase my 1/4 mile times.

I'll read through the articles more about the function of the resonator boxes but I am happy with this mod for $50 for what I designed it to do. I could not justify this type of mod for $200 or more.

I hope that helps give a little more background. And, I just ordered the magnaflow 12586 22" muffler for my final modification.

 

[gx470]

I forgot to add one thing about toyota engineering...I have been an avid Toyota fan since my dad bought his first toyota in 1986 when I was a little boy. I believe that there is only one vehicle to ever own, a toyota/lexus. However, having turned a wrench or two on all of my toyotas over the years, there have been two things that have frustrated me about toyota engineering.

The first was a 3" rubber coolant hose installed on the block of the turbo mr2 engine. The hose became known as the "hose from hell" because of it's location, it's likelihood to burst, and the "correct" way or replacing by removing the head, etc.

And the second being with this v8 engine and the location of the secondary air injection pump. Because of emissions and because of toyota's engineering of space, etc. As you know, it requires removing the entire intake manifold to get to that system. I cannot tolerate paying $3k for that repair, so I did the bypass. This has led to me occasionally bypass our typical logic of "well, toyota put it there for a reason and their engineers know more than us." Sometimes, the rationale to have something a certain boils down to regulations, money, etc, not always the best efficiency, etc. Like with the HCF installed after the air filter. I don't care if it's restrictive or not, I don't want it there.

So, I am not sure about the resonators being best for air flow, etc. I'll have to ponder that more.

 

[calvinv8sr5]

I meant to say job well done on the tubing, looks like a legit kit, and after I swap my motor I might do the same, great job thinking outside of the box

live action!!

 

[gtb129]

Basically you created an Airaid intake, and a deck plate mod, but without the deckplate. It's a pretty common mod on tacomas. I dig it. A+ for ingenuity.

 

[gx470]

Thanks I just put that screen on the holes to prevent major debris.

 

[calvinv8sr5]

Thanks I just put that screen on the holes to prevent major debris.

Put literal window screen material over that

live action!!

 

[gtb129]

Put literal window screen material over that

live action!!

He'll be fine. The tacoma guys literally just leave an open hole in the airbox when they put the deckplate in. They just close/plug the hole with the deckplate if they are going to be on a dusty road, or if they play in the mud. He just had to watch his filter to make sure it stays clean.

We did the deckplate mod on my dad's Tacoma. 40,000ish miles and no issues.

[MENTION=78727]gx470[/MENTION], you're welcome. I think the screen is plenty protective as long as you aren't bombing through water regularly. For anyone else wondering, I'm pretty sure these parts are obtainable at any chain auto parts store.

 

[calvinv8sr5]

He'll be fine. The tacoma guys literally just leave an open hole in the airbox when they put the deckplate in. They just close/plug the hole with the deckplate if they are going to be on a dusty road, or if they play in the mud. He just had to watch his filter to make sure it stays clean.

We did the deckplate mod on my dad's Tacoma. 40,000ish miles and no issues.

[MENTION=78727]gx470[/MENTION], you're welcome. I think the screen is plenty protective as long as you aren't bombing through water regularly. For anyone else wondering, I'm pretty sure these parts are obtainable at any chain auto parts store.

Show a pic of that mod your talking about that yall did, that's probably true just my luck it suck a bird in there lol

live action!!

 

[calvinv8sr5]

I just bought online all the stuff you bought but a little cheaper, advanced had that kit suprisingly.lol

live action!!

 

[gx470]

Cool, let us know how it turns out.

 

[gx470]

I just added a magnaflow 12586 22", very very nice not too loud but nice little growl just driving around and aggressive growl when on the throttle.