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Under Battery Cai Vs. Airboxed 3" Cai &. 4" Cai


RSK

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  • Member For: 18y 8m 29d
  • Gender: Male
  • Location: Sydney NSW

There's more to do with length of pipe, bends, diameter ect... they all change the way the airspeed and volume enter the turbo.

A classic example is dyno a car with stock intake then with no intake... power usually always goes up with no intake, but obviously lag becomes a factor due to sucking in hot engin bay air, but its a good basic example.

I always rate the under battery intake to a max of 350/360wkws... Ive seen a few go higher, but only a few and theres hundreds of these intakes out there.

I sell ALOT of 4inch intakes to guys that have mine, or plaz or PW 's underbat intake and always hear back positive increases and seat of pants improvements. If you dont make power then there's usually another issue that's holding power back.

Basically the more air volume you can get into a turbo, the better it will compress the air and force more into the motor, which is why the bigger intakes work so well.

It can looked at like exhaust systems, the turbine outlet is only 3inch, yet we need more than a 3inch exhaust system to make decent power.

Turbos work best when being fed alot of air, and not restricted back on the outlet... like Ive been saying for along time on here, more air, more flow, more power.

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  • Member For: 15y 13d
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  • Location: Sydney - Brighton Le Sands

this is my wog attempt to a airbox mods! lol :spoton:

K&N filter, stock box modified with induction pipe through to front bar..

We cykaflexed the pvc pipe through the box, cleaned it up and sanded it down. Then primed & painted the entire box matt black to suit..

post-39123-12843356672_thumb.jpg post-39123-128433568009_thumb.jpg

All I hear now is the same induction noise a mate has with a UBP set up..

Edited by 4DZILR
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  • Member For: 15y 13d
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Ill take some when shes all ready and finished... I plan on doing some more work to it to clean it up a little..

And probably doing a carbon fibre wrap

Edited by 4DZILR
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  • Member For: 15y 13d
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  • Location: Sydney - Brighton Le Sands

I did mod the bov aswell mate for the flutter.. but it does give the same suction ..

Edited by 4DZILR
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  • Member For: 16y 6m 13d
  • Gender: Male
  • Location: Adelaide

One thing I want to know, I can't decide because of all the banter, do I block the BOV or vent it? I think it has to be the most inclusive mod ever lol...

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