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Author Subject: Cone Filter in Standard Airbox
RetroPug

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Post #1
Hi,

I know induction has been covered 9999 times...but this is a slightly different question to "what is the best?".

Does anyone know the best cone filter neck diameter to fit the standard intake pipe leading from the airbox to the TB? I'd like it to fit in the standard airbox but also be a good seal and filter effectively once in place.

Of course, I could take it off and measure it etc and then order something but then I'd be left with a filterless car that I don't want to drive for longer, which isn't a desirable option. Also, if I remove the resonator on the airbox, am I correct in understanding that getting a plate welded over the hole is my only real option for bunging it?

Thank you.

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Posted 1st Oct 2013 at 16:03
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fatlapit

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Post #2
There is no real gains for removing the resonator

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Posted 1st Oct 2013 at 17:39
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coskev

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Post #3
I used a Tiger sealed plate over mineThumbs up

Resonators main job is to quieten intake noise,removed mine from airbox and inlet manifoldSmile

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Posted 1st Oct 2013 at 20:59
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jamiek_uk2000

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Post #4
I've read so many conflicting idea's on resonators that I've just left it in. I can't see the case for it's removal being massive and having much effect on performance to be honest

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Posted 1st Oct 2013 at 21:01
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coskev

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Post #5
Can't see any performance gains,but deffo more induction noise without themYes

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Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........

Mac1 ZR R1 kit car build in progress.
Posted 1st Oct 2013 at 21:03
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jamiek_uk2000

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Post #6
I hate the sound of my induction. If it wasn't for the power gains then I would be on an airbox. Add that to the Jetex and I just want to climb inside myself when I drive through town centres

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205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 1st Oct 2013 at 21:23
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bigbadbowen

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Post #7
Power gains ?
Posted 1st Oct 2013 at 21:28
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stan_306gti6 Forum Admin

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Post #8
Jamie - You would get more of a power gain using the standard air box than an open filter, as long as you had a decent cold air feed to it. Yes

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Posted 1st Oct 2013 at 21:47
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jamiek_uk2000

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Post #9
With a cold air feed an induction gives cleaner revs than the airbox does.

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205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 1st Oct 2013 at 21:47
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RetroPug

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Post #10
In any case, does anyone have any idea on a suitable neck size? Know the diameter of the hole in the top of the airbox? Know the space available inside it?
I basically just don't really know which cone to order without dismantling the whole thing and looking, and was wondering if anyone has any information like this to hand.

I'm not looking for performance gains...
My air filter likely needs changing once I manage to get the seized airbox-bottom off, and spending the same money as on a replacement k&n or pipercross etc. I could get a cone filter and have a nice induction note without any real loss in power, without spending any extra money, if anything spending a little less as cone filters alone seem quite cheap.

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61k miles Ph.1 Diablo '6 Project Thread
Posted 1st Oct 2013 at 23:15
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mattgti6phase2

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Post #11
76mm OD.

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Posted 2nd Oct 2013 at 23:28
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coskev

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Post #12
jamiek_uk2000 wrote:
With a cold air feed an induction gives cleaner revs than the airbox does.


Not in my experience with these enginesNo

Had two Rallyes at one point one with induction,one with standard airboxWink

Standard airbox did not restrict the engine,much better throttle response,more part throttle response,more low down torque Yes

Induction kit is just for noise!Smile

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Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........

Mac1 ZR R1 kit car build in progress.
Posted 3rd Oct 2013 at 09:39
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RetroPug

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Post #13
mattgti6phase2 wrote:
76mm OD.

Cheers mate, so the same as it is at the top then?

coskev wrote:

Not in my experience with these enginesNo

Had two Rallyes at one point one with induction,one with standard airboxWink

Standard airbox did not restrict the engine,much better throttle response,more part throttle response,more low down torque Yes

Induction kit is just for noise!Smile

Hence it seems like a decent idea to have a cone in the standard airbox thus keeping the same inlet tract and heat shielding but having a cone filter instead of std. circular for a bit more noise.

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61k miles Ph.1 Diablo '6 Project Thread
Posted 3rd Oct 2013 at 12:45
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jamiek_uk2000

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Post #14
coskev wrote:
jamiek_uk2000 wrote:
With a cold air feed an induction gives cleaner revs than the airbox does.


Not in my experience with these enginesNo

Had two Rallyes at one point one with induction,one with standard airboxWink

Standard airbox did not restrict the engine,much better throttle response,more part throttle response,more low down torque Yes

Induction kit is just for noise!Smile


What you need low down torque for? Keep it in the red! Smile

________________________________________

205 GTi Red - G939 RTU - Died!
306 GTi 6 Diablo - Being resurrected! Project Thread

Looking for:
VTS P1 Rack
PR1.2 16"
Posted 3rd Oct 2013 at 13:30
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stan_306gti6 Forum Admin

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Post #15
Indeed, agree with Coskev, an air box with a reliable cold air feed is the best for power. Yes

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"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 3rd Oct 2013 at 14:44
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mattgti6phase2

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Post #16
RetroPug wrote:
mattgti6phase2 wrote:
76mm OD.

Cheers mate, so the same as it is at the top then?


Yes indeed sir.

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 3rd Oct 2013 at 23:11
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RetroPug

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Location: Leicestershire

Registered: 15 Jan 2013

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Post #17
Thumbs up

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61k miles Ph.1 Diablo '6 Project Thread
Posted 4th Oct 2013 at 00:09
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