i just took my induction snorkel off and got my old boy to do a drive-by, holy crap! i can't believe the noise it makes even my dad had a smile on his face when he got out.

my question is, if i set up some CAI piping down to my front bar will it still make that awesome throaty sound or will it become quiet again like having the snorkel on?

cheers brendan

Yes It Will :d:d

Yes It Will :d:d

gee thanks choonga!!! lol which one? stay throaty or go quiet again?

you think thats good take off the resonator chambers :D :D
i pugged em up with McCormicks spice capps
they are a perfect fit with a lip so ya wont push it in too far

http://members.optusnet.com.au/~jellico1/rescapped.JPG

you think thats good take off the resonator chambers :D :D
i pugged em up with McCormicks spice capps
they are a perfect fit with a lip so ya wont push it in too far

http://members.optusnet.com.au/~jellico1/rescapped.JPG

am i looking at the green thing in that picture?

can doing this harm your engine in any way?

anyone got any audio clips of their induction noise?

am i looking at the green thing in that picture? yes

it wont do any damage as long as the lid is clean and clamped tight

you will loose a small amount of torque not noticable at 20% throttle
as i was told by Turbo_Charade

i used 30 or 40 mm core plugs man same thing

you wouldn't want that cap to get sucked into the throttle body!
edit: just looked at the pic more closely, it would be impossible for the cap to get sucked in.
great idea with the cap by the way lol

how much better is the sound compared to just removing your snorkel?

any idea what the resonators are for?

you wouldn't want that cap to get sucked into the throttle body!

how much better is the sound compared to just removing your snorkel?

any idea what the resonators are for?

to make the intake quiet
there are 2 chambers
1 on top and 1 on the bottom of the intake tube

cool, cheers mate.

any idea about my first question(first post) the one that choonga so thoroughly answered lol

my question is, if i set up some CAI piping down to my front bar will it still make that awesome throaty sound or will it become quiet again like having the snorkel on?

cheers brendan

it wiil sound louder because the intake will not be in the engne bay
there will be nothing to hinder the sound
BUT don't make the pipe too low to the ground or you'll suck in water if you drive though a puddle

edit: you could possably tune the intake note
depending on the length and size of the pipe

I did the same thing only i used gatorade lids. Same perfect fit... if you look closely inside the hole it closes a few mm (like venturi only not that small lol) so it cant get sucked in whether the cap has a lip or not.

it wiil sound louder because the intake will not be in the engne bay
there will be nothing to hinder the soundBUT don't make the pipe too low to the ground or you'll suck in water if you drive though a puddle

i like the sound of that!

yeh, puddles would be a bit of a b*tch.

thanks for your help mate!

anyone else got something to add?

I did the same thing only i used gatorade lids. Same perfect fit... if you look closely inside the hole it closes a few mm (like venturi only not that small lol) so it cant get sucked in whether the cap has a lip or not.


have to start savin the lids!

I don't believe it will be quite as loud as you remember it having the snorkle off compared to the CAI set up due to the change of it's intake location, but saying that it will still be pleasing to the ear ;)

to make the intake quiet

I thought that they were to smooth out the airflow ... that and something to do with the high & low pressure points in the intake piping.

i have a standard exhaust too so that could be why it seemed real loud, it was all i could hear! lol

I thought that they were to smooth out the airflow ... that and something to do with the high & low pressure points in the intake piping.

anyone got a manual or the know without a doubt what they are for?

This may answer your question blkmag. http://www.users.bigpond.com/pgscott/resonator/ResonatorsAcoustic.htm

Once you've read it can you explain it to me :bowrofl: .

Cheers

im putting my resonator boxes back in.......

im putting my resonator boxes back in.......
Why is that? :think:

Why is that? :think:

idling problems? low rpm performance? nothing to do?

what kind of performance increases do u think u'd get from a completely stock exhaust? :confused: it will sound good tho.

im putting my resonator boxes back in.......

come on mate, share your experiences!

Resonators are to combat resonances produced by induction geometry. Resonators may reduce flow slightly, but it wouldn't be much, and certainly not to the extent that you can feel in your seat. But taking off the resonators will mean you hear more of the particular frequency that it was tuned for.

The full intake on the 3rd Gen Magna's has 3 resonators, 2 on the pipe between MAF sensor to TB, and 1 under the flat intake snorkle

This may answer your question blkmag. http://www.users.bigpond.com/pgscott/resonator/ResonatorsAcoustic.htm

Once you've read it can you explain it to me :bowrofl: .

Cheers

Ive done a bit of fluids study in Uni, but reading between the lines of the report and equations used - the introduction of a resonator will improve airflow to the appropriate cylinders at specific rpm ranges dependant on the size (or lack of) of the resonator. Where the improvements are designed for with our stock intake piping is a mystery, especially have 3 resonators. And because of the nature of the equations, airflow velocity is dependant on wavelength, rpm and tube length... :nuts: This is without introducing the idea they are only used for induction noise.

I dont think there is a simple answer to this one. Obviously hours have been spent in the windtunnels by Mitsi engineers perfecting this one for specific reasons only they will know. Would make a good PHD study for mechanical engineers :)

the work is first done with the intake attached to a flow bench, then later attached to an actual Engine on an engine dyne, no need to waste money on Wind tunnels (to give you an ideal of how much wind tunnels cost; Monash wind tunnel costs around $2000 per hour), I've tested cars in the Monash wind tunnel before.

Furthermore, you will find that due to packaging, it is almost impossible to come up with a perfect design on the first go, and usually the way it works with manufacturers is that they will have a initial design to package the intake into the engine bay, then they'll run Noise&Vibrations tests on it, that's where I come in, we identify the frequencies that needs attention, then power train or the engineer in charge of the intake will then make up some resonators for the frequencies we tell them, and that's why there exists resonators, because without them, you would hear a few strong narrow band frequencies that most people find annoying and complain about!

So I hope I've been helpful in answering why the resonators are there.

thanks guys for taking the time to add your comments!

what i want to get out of removing these resonators is a beafy induction noise, without loosing power or damaging my engine.

from what i can tell some ppl believe i might loose low down torque and it may idle rough?

might ring mitsubishi and see what they know or just remove them one by one and see what the difference is.

to the guys that have removed one or all of the resonators- have you noticed any bad effects since removing them???

cheers brendan

well, I will find out I guess... I removed one, one problem I have already noticed is that I now have a McCormicks coarse pepper shaker which has no lid lol but dang it's a better option to milk bottle lids!

Wouldnt putting a Pod filter have the same effect or give better results ??

well, I will find out I guess... I removed one, one problem I have already noticed is that I now have a McCormicks coarse pepper shaker which has no lid lol but dang it's a better option to milk bottle lids!
lol yeah my missus thought she threw the lids away
and i'm not telling here where they went :D

lol yeah my missus thought she threw the lids away
and i'm not telling here where they went :D

lol lol

Wouldnt putting a Pod filter have the same effect or give better results ??

yeh your right, putting CAI from the throttle body would cut out all the resonators!

here's an article i found, pretty sure thats where phil got his attachment from?

CAI info (http://www.users.bigpond.com/pgscott/resonator/resonator.html)

well, I will find out I guess... I removed one, one problem I have already noticed is that I now have a McCormicks coarse pepper shaker which has no lid lol but dang it's a better option to milk bottle lids!

hey mate,
hows the car going without the resonators?

hey mate,
hows the car going without the resonators?
:redface: haven't driven it since sorry!... I am not expecting too much though and I don't want lots of McCormicks bottles with glad wrap lids yet lol

here's an article i found, pretty sure thats where phil got his attachment from?

CAI info (http://www.users.bigpond.com/pgscott/resonator/resonator.html)

For those who have read this article and are wondering what capacity the resonators are on your magna, here they are for the 3rd gen.

Smaller, triangular shaped one on top of the induction pipe = 520cc
Larger one underneath the induction pipe = 1350cc

combined for those too lazy too add it up = 1870cc :D

Didnt do the one fwd of the air box but I am not using the snorkle at this point anyways.

For those who have read this article and are wondering what capacity the resonators are on your magna, here they are for the 3rd gen.

Smaller, triangular shaped one on top of the induction pipe = 520cc
Larger one underneath the induction pipe = 1350cc

combined for those too lazy too add it up = 1870cc :D

Didnt do the one fwd of the air box but I am not using the snorkle at this point anyways.

good work mate!

thanks guys for taking the time to add your comments!

what i want to get out of removing these resonators is a beafy induction noise, without loosing power or damaging my engine.

from what i can tell some ppl believe i might loose low down torque and it may idle rough?

might ring mitsubishi and see what they know or just remove them one by one and see what the difference is.

to the guys that have removed one or all of the resonators- have you noticed any bad effects since removing them???

cheers brendan

I have removed all 3 and everything is fine, had no problems with it

I have removed all 3 and everything is fine, had no problems with it

thanks for the feedback mate, tis good to hear.

how does your car sound with them removed?

thanks for the feedback mate, tis good to hear.

how does your car sound with them removed?

Lets just say you can hear it over the exhaust! i have the stock air filter in it i used to have a pod but now i think there pointless on a n/a car i had no low end power at all but it did pull a bit better up high, i might try and experiment with the k&n panel

My theory on the induction is you can't get big power gains out of it unless you replace the plentum, T/B, MAF sensor like they do with the LS1 powered commodores the set up the magna has is extreamly well set up ive been told, i guess you can make a bit more power but nothing noticeable unless you have other mods
Well thats from my experience anyways

Yeah port and polish your intake manifolds (incl. plenum) larger diameter t/b, maf and ducting. Prob is you cant get after market big bore t/b's and maf's for magnas. No point in doing some and not all. My mate who has a XR8, recently on a trip to the US, bought all this good gear including large dia intake bits but not a MAF. The car doesn't go much better as he hasent made any gains from his induction mods. And he paid apretty penny for it all too :badgrin:

I'v e had my magna without both resonators removed (downstream from the MAF) and found that it reved a bit harder but the throtle was a bit touchy. Then I had it with just the 500cc resonator on and it was pretty good ie throtle not as touchy but still had good top end. Now I have the large one on without the small and havent had the opportunity to test it out yet so yeah.

Would be good to test these on the dyno and see what the differences are for interest sake.

My question is, do you reckon the resonator in the snorkle, infront of the filter would be doing anything other than reducing noise?

My question is, do you reckon the resonator in the snorkle, infront of the filter would be doing anything other than reducing noise?
Resonators aren't just for noise. They're a tuning feature to reduce airflow disruption as a result of resonance from the engine.

Yeah, but in front of the MAF and filter was my question.

Surely 1870cc will cover this :confused:

clark rubber sell 40 cm block of plugs fit perfectly for 90 cents each in them holes i used them wikked sound people look at u big time