I am building a new b20Vtec engine for one of my Civics which I use for Road Racing only and noticed that all the Realtime Integras use a muffler, wouldn´t they be faster with no muffler? I have no mufler in my race cars but was wondering if I should install one for better torque.

Jay

 

id def. put one on for the torq. get a stright through design like the 5zigen fireball

 

hytec header and exaust ownz u. or even a set up from smsp

 

Many tracks have a dB limit and require some form of sound suppression to comply.

 

How can a muffler/resonator add torque?

 

don't they use BORLA?

 

backpressure, all though i dont know what it is good for but i belive it has somthing to do with retaining current power. also the rules and regulations may have limits on what they can do to the car so a exhaust may be needed

 

decibel level restrictions

-Bryan-