Originally Posted by Osiris 75
Is there any rules on how many fins you can have? Do you get more performance with more fins??
If you increase the length in between the manifold and pipe, the engine will get better low rpm power(more torque) but you will loose high rpm power(less rpm at full speed).
If you decrease the length in between the manifold and pipe, the engine will get better high rpm power(more rpm at full speed) but you will loose low rpm power(less torque).
Hope this helps...