Flowbench database

Measured in our own flow bench.
All flow numbers are measured with 28"H2O pressure differential.
Flow numbers are Inlet flow / Exhaust flow and below Exhaust to Intake flow ratio in percents.

Diesel

Manufacturer Model Inlet / Exhaust valve sizes 2mm 4mm 6mm 8mm 10mm 12mm
BMW M47/57 Diesel 25.9mm / 25.9mm 52.2/54.2
104%
88.3/109.6
124%
104.2/125.8
121%
112.5/126
112%
117.2/126.4
108%
Dodge Cummins 45mm / 42mm .100"
59.7/49.6
83%
.200"
102.6/100.6
98%
.300"
125.2/131.1
105%
.400"
140.1/142.6
102%
.500"
144.8/143.7
99%
.600"
147.1/146.3
96%
MB 200CDI 16v 30.2mm / 28.5mm 45.4/55.8
123%
87.2/101.8
117%
124.9/133.9
107%
149.5/154.2
103%
158.4/161.9
102%
164.1/168
102%
Vito 2.0 TD 38mm / 35mm 35.1/37.4
107%
69.5/72.2
104%
100.1/98.2
98%
122.6/119
97%
141.2/135.4
96%
151.3/136.2
90%
Opel 1.7TD 36mm / 32mm 38/32.9
86%
65.3/60
92%
91/76.8
85%
109.1/87.6
80%
118.7/95.3
80%
123.7/98.7
80%
PSA 1.9TD XUD9TE 38.5mm / 33mm 37.6/25
66%
78.5/53.2
68%
107.8/71.8
67%
121.9/83.2
68%
122.4/88.1
72%
125.1/90.8
72.5%
HDI 16v 30mm / 25mm 62/51.5
83%
106.8/97.8
91.6%
123/120.3
97.8%
129/131.9
102.3%
133.2/135.3
101.6%
136.4/136.9
100.4%
VAG 1.9 TDI PD 36mm / 31.4mm 32.5/34.4
106%
66.5/60.4
91%
95.6/92.7
97%
107.3/108.4
101%
113/112.1
99%
116.2/111.8
96%
1.9 TDI VE 36mm / 31.4mm 32.6/27.7
84.8%
70.4/57.3
81.4%
97/82.9
85.5%
108.9/98.8
90.7%
110.5/105
95%
112.4/104
92.5%
BKD 16v 29mm / 25.5mm 57/58.1
102%
96.9/88.4
91%
118/99
83.8%
116.9/102.8
87.9%
120.3/105.3
87.6%
CR 2.0 16v 28.1mm / 26mm 47/49.1
104%
95.6/86.7
91%
119.5/105.9
89%
128.9/110.6
86%
133.1/113.1
85%
135.7/114.1
84%
2.5 TDI VE 36mm / 31.4mm 33/31.9
96.5%
70.2/61.6
88%
92.2/83.4
91%
102.2/101.6
99%
101.2/108.3
107%
101.4/113.4
112%
2.5 TDI PD 36mm / 31.4mm 31/30.4
98%
68/59.5
88%
96.8/86.6
88.4%
111.1/101
91%
120.3/110.8
92%
Volvo D5 2.4 1-gen
28.8mm / 26.2mm 56.2/61.9
110%
97.3/100.8
104%
114.7/108.7
95%
121.6/110.7
91%
125.7/111.9
89%