Whisky_Tango said:Generally, 1 PSI of air will give you 1 PSI of fuel.
So more air and petrol give you more power.
I suppose, this device helps in low end to mid range. On the high end, the flow somehow balance out with the WOT flowrate.
If Im not wrong, WOT for 320i is 580kg/s thereabout. This is measured in Mass.
Taking 500CFM which is measured in volume. Covert to L/s (1CFM=0.472L/s)
= 500 x 0.472
= 236 L/s
Taking density of air = 1kg/m3, convert to kg/s (1m3=1000L)
= 236L/s x 1Kg/m3
= 236Kg/s (where the L and the m3 are crossed out)
So Shawn's concern is valid, as the fan max out at 236kg/s which is smaller than required by the engine of 580kg/s less my assumption of 580kg/s is wrong.
Shaun said:only if engine consumes more than the blower is speced to flow. and that will only happen on the larger displacement engines. few cars have true ram air setups. and if there is ram, the ram is not lost but helps the blower compressor efficiency. This is assuming WOT with the blower blowing.
Shaun said:Whisky_Tango said:Generally, 1 PSI of air will give you 1 PSI of fuel.
So more air and petrol give you more power.
I suppose, this device helps in low end to mid range. On the high end, the flow somehow balance out with the WOT flowrate.
If Im not wrong, WOT for 320i is 580kg/s thereabout. This is measured in Mass.
Taking 500CFM which is measured in volume. Covert to L/s (1CFM=0.472L/s)
= 500 x 0.472
= 236 L/s
Taking density of air = 1kg/m3, convert to kg/s (1m3=1000L)
= 236L/s x 1Kg/m3
= 236Kg/s (where the L and the m3 are crossed out)
So Shawn's concern is valid, as the fan max out at 236kg/s which is smaller than required by the engine of 580kg/s less my assumption of 580kg/s is wrong.
Eric, your figures are off.. it is not kg/s . it is g/s . if you could move 580kg/s you would be outrunning every car on the face of the world hehehah
I also do know that a 320 will not max out at 580g/s. 240hp cars max out around 250g/s. You can confirm this with logs. I can guarantee you that a lightly-modified 320 will not flow more than 350CFM at a 6500 redline.