i wish to have a system like this:
1. during low speed or pickup, the muffler is S flow. then the extractor is 4-1 mode.
2. while I drive very fast (80kmh or above), the muffler will change to straight flow and extractor become 4-2-1 mode
I heard that powerzone extractor is so call the hybrid extractor. anyone can explain?
besides, the original mugen twin loop is the one that will change muffler mode during different mode. am I right?
if both my theory are correct, mid box or mid bullet how? or use the twister bullet?
????
You should read up more about exhaust systems first... Google is your friend. Exhaust systems do not change "modes"! Only some mufflers do.
Hybrid extractors are basically 4-2-1 extractors with longer primary runners.
This allows it to have a better top end range like the 4-1 extractors, but maintain a good amount of low end power as well. Think of it having a long "4 pipe" portion and a shorter "2 pipe" portion before connecting to "1".
There is no such thing as an extractor which is good from low to high rpm, you have to choose your optimum powerband to focus on. Hybrid extractors have a slightly wider powerband range, but are not as good as 4-2-1 for low end and 4-1 for high end.
Of course, a well designed extractor will perform better across the entire rev-range than a chaplang extractor, but assuming that it is manufactured to the best standards, you have to choose an optimum range.
The mugen twin loop doesnt change modes, its just a straight flow that goes into the muffler body twice. DC5, EP3 and FD2 stock mufflers have the "modes" thing youre saying in the form of a flap in the muffler body, which opens during high pressure and allows gasses to by-pass the usual route and go straight into the outlet. Meaning low pressure its S-flow, high pressure its nearly straight-flow.