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Camaro V6 LLT Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 09-24-2009, 06:51 PM   #1
scrming
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Scrming's Air Intake Experiment - Part II

Well... wasn't quite ready to post this up yet... BUT.. since I kind of let the cat of the bag... here we go....

Since the IAT relocation experiment went so well, I decided to tackle the intake tube.

Now when I first got my car I had asked Scott from MRT what that big appendage on the left side of the intake tube ways since I had really never seen one like that... He explained it was a silencer/resonator. That it's function was to help eliminate intake noise. And as we all know it does a great job! Even with a K&N filter and the stock snorkel off you cannot hear ANY intake noise!

Scott went on to explain that the silencer/resonator works but it does disrupt the air flow going into the throttle which in turn has a negative effect on performance! Since I don't mind the sucking sound I figured I needed to lose the silencer... First thought was to just cut it off... but I backed off that idea....

So one day walking through the auto parts store I happened to see some universal CAI kits and parts... Hmmm... So I decided to buy some of these parts and see if I could put together my own intake tube.... So I bought a handful of stuff and headed home... and this is what I came up with!

SO...

90 degree elbow, vacuum adapter, 45 degree elbow. I had to cut the 45 degree elbow.



Stock vs new...


The stock silencer/resonator... it's like a figure 8...


The hole for the silencer...


And the hole for the pcv connection... again right before the TB...



and now... the new tube installed.






and finally... a little video clip... (listen with your headphones)




BETTER VIEW!



Here's the part list:

Spectre - Air Intake Tube - Part Number: 8698 - $10.00

Spectre - Air Intake Vacuum/Sensor Adapter - Part Number: 8707 - $11.99

Spectre - Air Intake Tube - Part Number: 8738 - $11.99

Spectre - Coupler/Reducer Combo - Part Number: 8771 - $7.99 - This is for the throttle body connection

Ok.... the coupler for the tube to the air box is a RUBBER coupler... I bought the whole thing as a big kit - Spectre 8208. See: http://www.streetsideauto.com/produc...GoogleShopping

The 8208 came with a RUBBER coupler, not the more stiff silicone coupler... however with the 8208 you still need the 90 degree elbow....

Also needed a piece of hose... so basically did this for $50... you may be able to find the piece cheaper online... I just bought them at the local part store...

Big day will be Saturday... Car goes on the dyno! It is a "Dyno Day" though so I'll only get a couple of pulls... unlike when I buy my usual dyno time where I get 4 or 5 pulls... Since I like the way this turned out I'm thinking I will just dyno the IAT relocation and new tube all together....

Last edited by scrming; 09-25-2009 at 01:16 PM.
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Old 09-24-2009, 06:54 PM   #2
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very cool man.. props to you.
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Old 09-24-2009, 07:00 PM   #3
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Nice job srcming! How loud is it from the inside of the car? Under load? Looking forward to your numbers on the dyno!

Last edited by Icefsh; 09-24-2009 at 07:04 PM. Reason: Wanted to add more.
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Old 09-24-2009, 07:04 PM   #4
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Nice work and thanks for sharing. I'll be looking forward to your dyno results.
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Old 09-24-2009, 07:21 PM   #5
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Thanks guys...

I really haven't got on it really hard so I'm not sure if you can really hear a difference in the cabin...
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Old 09-24-2009, 07:47 PM   #6
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Great job, it looks very nice.

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Old 09-24-2009, 08:06 PM   #7
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Awesome job man, thanks.... can't wait to see your dyno numbers!
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Old 09-24-2009, 08:39 PM   #8
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Scrming, what auto parts store did you buy those items at?
Seems like I saw some CAI items at Auto Zone the other day.
Do you have a part# for the hose?
Thanks again for another excellent low budget V6 mod to
share with us.
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Old 09-24-2009, 08:46 PM   #9
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Nice job.........

The photos are really GREAT !!!!.........

..for sharing

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Old 09-24-2009, 09:09 PM   #10
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ur a genius haha.
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Old 09-24-2009, 10:37 PM   #11
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wow that does sound awesome. And you are genious. I want your exact set up, sorry to be a copy cat but your exhaust just sounds the best. Great work. I get excited everytime i see a thread by Screaming!
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Old 09-24-2009, 11:42 PM   #12
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Originally Posted by TJ91 View Post
wow that does sound awesome. And you are genious. I want your exact set up, sorry to be a copy cat but your exhaust just sounds the best. Great work. I get excited everytime i see a thread by Screaming!
agreed. this is why I will be heading to MRT as soon as my car gets here to get the scrming special.
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Old 09-25-2009, 05:15 AM   #13
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Thanks all!

I got the stuff at O'Reillys - http://www.oreillyauto.com

Sorry, no part number on the hose... just got a chunk of 1/2 inch (i think) flex hose and cut it to fit.... I have some left over at home... i check to see if it says what size it is...
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Old 09-25-2009, 07:37 AM   #14
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Scrming,
You did a fantastic job on this experiment. I think we are all hoping that the dyno or track numbers show it to be a good performance mod. We already know it's a good cosmetic mod. I want to do it!

Two questions:
Do you think the aluminum tube will contribute to heating the air entering the engine more than the plastic OE part does? The metal will absorb the heat more and retain it too.
Also, do you have concerns that there is enough flex and give in the joints you constructed on the new part so that when the engine torques and the air box stays put, everything will remain connected? The OE part has that accordion joint on it.

Keep up the great work and thanks for sharing your ideas with us!!
-Dave
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Old 09-25-2009, 08:09 AM   #15
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Originally Posted by dagolfguy View Post
Scrming,
You did a fantastic job on this experiment. I think we are all hoping that the dyno or track numbers show it to be a good performance mod. We already know it's a good cosmetic mod. I want to do it!

Two questions:
Do you think the aluminum tube will contribute to heating the air entering the engine more than the plastic OE part does? The metal will absorb the heat more and retain it too.
Also, do you have concerns that there is enough flex and give in the joints you constructed on the new part so that when the engine torques and the air box stays put, everything will remain connected? The OE part has that accordion joint on it.

Keep up the great work and thanks for sharing your ideas with us!!
-Dave
Excellent questions!!!

The tube is actually chromed plastic... I've kind of scratched it a bit with all the test fitting, etc. Thought was if I really like this I may scuff it up and paint it... So to answer you question, no, i'm not really concerned about the heat.... Tube actually seems to stay pretty cool...

Now, your second question is one that concerned me while I was doing this... I got the tube mounted in there and thought, "OH CRAP... what happens when the motor torques over!" Because yes the motor torques AWAY from the air box... So at that point I was ready to shelf this project...

I then talked to my automotive engineer friend Scott from MRT. He said the couplers should provide enough flex. Worst case is they may give out at some point, like after 30,000 or 40,000 miles... I also went back and cut more off the 45 degree elbow. This left a bigger gap between the tube and the stock air box allowing for more flex.

One thing... while I listed the parts individually I actually bought the thing as a whole kit... The whole kit was way to long so I had like 2 or 3 left over pieces... so it is more cost effective to buy the pieces individually which is why I listed that way... HOWEVER the coupler that came with the kit is a very soft rubber coupler. This is the coupler that is joining the tube with the stock air box. So yes, it is very soft and flexible... very rubbery... but I'm thinking it might not be heavy enough... On the other had the silicone coupler I bought and am using for the throttle body connection is heavier and a lot stiffer... so i'm thinking that's a bit too stiff for the air box connection... I will see how the rubbery coupler holds up and may try a better option for this.. In the mean time I'm keeping my stock tube in my trunk! It's a 2 minute job to swap them!

So with Scott telling that if anything were to fail it would be the couplers... especially the one between the tube and the air box... Well that made me feel better and I decided to continue with the project! I had visions of ripping my throttle body off! LOL!

Also... upon closer inspection it seems our stock air box is not as sturdily mounted as I had thought! There are some rubber mounts:



I will try to get a better video show how things move...
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Old 09-25-2009, 08:25 AM   #16
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Hey Scrming,
Have you been able to replicate the 5.63 0-60 mph time at any time after the original run?
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Old 09-25-2009, 08:26 AM   #17
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Another question, at some point if your happy with the new setup, could you cut off the flex/accordion portion of the stock tube and use it instead of the rubber coupler?

Thanks.
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Old 09-25-2009, 08:28 AM   #18
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I am impressed.
After watching the vid all I can say is " ITS ALIVE...ITS ALIVE!" You know, out of the Frankenstein movie.
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Old 09-25-2009, 08:47 AM   #19
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I have not tried another 0-60 run... To be honest I don't like doing it even on the very empty back roads of nothern michigan... I prefer to do that kind of testing at the track!

Like last Saturday!

http://www.camaro5.com/forums/showthread.php?t=43371

So in my mind the IAT relocation made a dramatic difference... I can see in the data logs the car is running 4 or 5 degrees more timing...

Also... i don't think I'll cut up my stock tube... more than likely I would simply hit a junk yard... or do some more online searching...

Better video to come... I simply just set the camera on the finder... LOL Need to dig out the old tripod!
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Old 09-25-2009, 09:11 AM   #20
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Ok... did some poking around... I actually purchased the spectre 8208 KIT... but it had a two extra pieces that you don't need... so I thought it would be more cost effective to buy the part individually... HOWEVER one thing... the 8208 kit includes a RUBBER coupler vs the much stiffer coupler that I bought... I believe the rubber coupler is much better for the tube/air box connection...

here's the kit I bought:

http://www.streetsideauto.com/produc...GoogleShopping

so with the 8208 all you need to buy is a 90 degree elbow and silicone coupler for the throttle body and a piece of hose...

Hope all this isn't to confusing...
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Old 09-25-2009, 01:18 PM   #21
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Ok... so I made a better video today.... Remember dig out those head phones! LOL!


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Old 09-25-2009, 03:21 PM   #22
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do u think this will put up as many hp's as a the CAI's out there
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Old 09-25-2009, 04:25 PM   #23
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do u think this will put up as many hp's as a the CAI's out there
No idea... LOL!

Car goes on the dyno tomorrow... won't be a scientific test because my "before" run is from earlier this summer... SAE correction should help make it a reasonable comparison with my previous dyno pulls... It's a Dyno Day so my pulls will be limited... If it was a regular dyno session I would to a better before and after...

Now I will say the IAT relocation definitely gained some HP.... It shaved at least .2 and maybe as much as .3 off my 1/4 mile time! So coupled with the new tube... yeah, i am hoping to see some descent gains tomorrow...

So it's about $30 to do the IAT relocation. $60 or so for the tube... I tossed in a K&N filter for fun... so $50 that... so far I've got about $150 into this little experiment...
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Old 09-25-2009, 06:18 PM   #24
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I can't wait to hear how you do on the dyno tomorrow!
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Old 09-26-2009, 02:39 PM   #25
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Dyno DAY!
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