Hi everyone

Just like to know what is the exact use of the EVC's mode 7 and 8. I know that it is about the percentage of the exhaust leaving (at least that is what I was told). This would mean at 100%, all the exhaust leaving.....at 90% 10% of the exhaust will mean increasing the boost by the said percentage.....

Question is I'm alittle confused. If setting the A and B volume is already increasing boost, would it not be the same as reducing the percentage of exhaust leaving in mode 7 and 8?

Thanks in advance......

PS: I searched but didnt quite get the answer for this....