Air Filter / Induction for VTS Turbo

8th November 2008, 20:27

I am trying to establish which type of air filter / induction kit is best suited for my VTS Turbo. Does anyone have any opinions on which is the best? I would like to use an enclosed kit such as the BMC but have never seen a turbo setup use enclosed kits before

Anyone have any opinions on this?

9th November 2008, 00:33

I just use a £20 k&n filter on my sc kit but if your after a enclosed kit kit then the bmc is only real option due to space in engine bay. Also why you want an enclosed filter ic shuld drop inlet temps..

9th November 2008, 00:37

Quote:

Originally Posted by Dboyvts

I just use a £20 k&n filter on my sc kit but if your after a enclosed kit kit then the bmc is only real option due to space in engine bay. Also why you want an enclosed filter ic shuld drop inlet temps..

Cooler the initial intake, the cooler the air will be entering the i/c which means the cooler the air will be after it leaves the i/c - every little helps

I am concerned about air flow though - will the BMC with an inlet pipe sealed around the fog light hole (using a custom made reducer), have better air flow than a large cone filter?

9th November 2008, 00:40

Even the uber powered jap beasts have open cone mushroom type filters mate, I dont tink theres any point in having a BMC as the turbo will just warm up any of that cold air. And the surface area of a large open cones gonna be bigger Id say

9th November 2008, 00:44

Quote:

Originally Posted by Ben_Saxo

Even the uber powered jap beasts have open cone mushroom type filters mate, I dont tink theres any point in having a BMC as the turbo will just warm up any of that cold air. And the surface area of a large open cones gonna be bigger Id say

Yeah see where you are coming from, just doing my research before i make any decisions. I would still go down the enclosed route if i was sure the air flow of the likes of BMC / Viper etc can match the air flow of a cone filter.

I have just emailed PiperCross asking them to supply details of the the air flow / restrictiveness of their Viper Kit. Lets see what they say

9th November 2008, 00:54

As ben said the turbo will just put the inlet temp back up before i/c.
Would think a open filter will flow better but with the turbo sucking so much air it mite not be problem with enclosed unit

9th November 2008, 10:55

i have a viper on my r5 gtt works well, but as people have said the turbo is just gonna heat the air back up anyway b4 it goes trough the ic .

i dont think there is any difference with using either enclosed or not flow wise.. just price !! enclosed seem to be alot more expensive my viper cost £220

9th November 2008, 11:05

ive just got a nice big open filter, might try to move it down to the fog light hole tho

9th November 2008, 11:43

I hear what people are saying about the turbo heating the air up, but surely its common sense to assume that the cooler the air entering the turbo, the cooler the air will be leaving it before it hits the i/c?

Its obvious that the turbo will heat the air up, but if you start off with the coolest air possible (i.e coming in from outside of the engine bay), its better than having a cone filter just stuck anywhere with a cold air pipe coming from the grille etc???

I know its not necessarily going to drop the intake temps by a massive amount, but because i am in the position to carry out research and development, i might as well go for the setup which gives the best performance, albeit marginal! At the end of the day, its small gains which make your car just that bit better than one which has a 'run of the mill' setup, and also gives it a customised 'one off' look, which is what a turbo conversion is all about.

My only concern with enclosed induction filters is that the air flow may be restricted, however, i am hoping to get answers from PiperCross about that so i can make a decision.

9th November 2008, 17:54

i understand what you saying, air 20 deg-goes into turbo air 80 deg- goes to cooler air 30 deg- goes to inlet.
those are just radom figures and dont in any way have any meaning.

so in therey if the air goes in at 10 deg it should come out at 20 deg

10th November 2008, 09:08

Quote:

Originally Posted by gixxa

i understand what you saying, air 20 deg-goes into turbo air 80 deg- goes to cooler air 30 deg- goes to inlet.
those are just radom figures and dont in any way have any meaning.

so in therey if the air goes in at 10 deg it should come out at 20 deg

Badly worded but yeah, if the air comes in via the filter cooler, it will hit the inlet at a cooler temp - well thats my thinking anyway!

Still waiting for a response from PiperCross, hopefully should get one today at some point. I will post up their answer when i receive it.