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Intake Velocity Stack Testing @ TDi North

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227
Who would have thought a plastic funnel on the tip of your intake could be so effective?

5209124567_206f1b03d4.jpg


Solid line is the base configuration:
- 2.5” Mandrel bent exhaust (two mufflers)
- 2.5”, 200 Cell Sports catalytic converter
- 4-2-1 header with 2.5” collector
- Stock head & block
- Plastic Intake manifold gasket
- Aftermarket Inlet manifold
- 70mm Throttle Body
- 76mm Cold Air Intake
- Piggy Back ECU


Dotted line is the addition of a BPI velocity Stack and k&n cone filter

5248385221_b7d575b772.jpg


- [FONT=&quot]Air temperature in dyno cell was between 11-14 °C.[/FONT]
- [FONT=&quot]Air pressure was between 1010-1018 millibars[/FONT]
- [FONT=&quot]Tyre pressure maintained at 32 PSI on 215/40/17 tyres[/FONT]
- [FONT=&quot]All runs taken while engine coolant temperature was between 81-84 °C.[/FONT]
[FONT=&quot]Each configuration change to the intake is run 3 times with the best value taken forward. We ran a buch of other configurations, the graph above shows the best one!


[/FONT]
 
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i had one of those bad boys on my old car, mated with a k&n aswell, never got it rr but seemed to perform well.
 
How does it work? Does it just increase the velocity of the air flow on open cone filters?
 
that is quite a impressive result, where hove you mounted the trumpet? in a fog light hole or somthing?
 
that is quite a impressive result, where hove you mounted the trumpet? in a fog light hole or somthing?

Its mounted in the same place as a normal CAI, I've since fitted a shorter k&N that fits behind the bumper properly.

Some vids so you can hear the devils trumpet
http://www.flickr.com/photos/48838467@N03/5232273615/

And see the filter
http://www.flickr.com/photos/48838467@N03/5234478588/

Cosmic_Chi said:
This would fit an AEM CAI then? thats if im correct in understanding the concept

Sure with a reducer hose 3" -> 2.5" it would fit an AEM
 
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