16-05-2012, 05:39 PM
Mark / Ruan are right..
You basically have to imagine is as two systems, saying three just confuses matters...
Basically the supercharger sits infront the intake and provides constantly pressure through the rev range, which makes up for the drop in compression, which has the effects of reducing the haze at idle, reduces turbo lag, and when boost from turbos come in, re compresses the air, allowing higher boost levels while holding turbos in there efficiency for longer... it effectively just alters the engines volimetric efficiency for the better, but obviously using up hp doing so...but my old de comp XUD wouldn't even run without it, just chronic haze / smoke....
So the charger just sits there constantly giving pressure / compounding the boost.
Then the turbos are setup in a sequential setup, meaning one turbo (the small VNT) is for low rpm, and the big turbo is for mid / top end flow, working in a way that the small one literally gets bypasses (hot and cold side) once the big one is on puff, not like compounding where they both remain online / re compressing air...
So basically its a sequentially compounded boost setup, if that makes sence... I made a diagram to try and show what im on about:
![[Image: diagram1.jpg]](http://i281.photobucket.com/albums/kk226/darrenjlobb/The%202012%20Bus%20Project/diagram1.jpg)
You basically have to imagine is as two systems, saying three just confuses matters...
Basically the supercharger sits infront the intake and provides constantly pressure through the rev range, which makes up for the drop in compression, which has the effects of reducing the haze at idle, reduces turbo lag, and when boost from turbos come in, re compresses the air, allowing higher boost levels while holding turbos in there efficiency for longer... it effectively just alters the engines volimetric efficiency for the better, but obviously using up hp doing so...but my old de comp XUD wouldn't even run without it, just chronic haze / smoke....
So the charger just sits there constantly giving pressure / compounding the boost.
Then the turbos are setup in a sequential setup, meaning one turbo (the small VNT) is for low rpm, and the big turbo is for mid / top end flow, working in a way that the small one literally gets bypasses (hot and cold side) once the big one is on puff, not like compounding where they both remain online / re compressing air...
So basically its a sequentially compounded boost setup, if that makes sence... I made a diagram to try and show what im on about:
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![[Image: sigi-2.png]](http://i281.photobucket.com/albums/kk226/darrenjlobb/sigi-2.png)
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