exhaust system for vts

  1. Established Member Joined: Feb 2011 Posts: 1385
    #1
    Ok so i pick up my vts soon it has a btb 4-2-1 manifold on it. I am looking for a exhaust system i was thinking saxsport. BUT here is my what i don't get ok so say i got a saxsport or a kam racing one? Surely i will lose back pressure? Which is a bad thing.
  2. Newbie Joined: Jul 2011 Haverfordwest , Pembrokeshire Posts: 22 53 Saxo VTR
    #2
    alot of sport back boxes can maintain the back pressure but allow easier flow i have a supersprint on my vtr and its not loud at all but its back pressure feels stronger and made a lot of difference to engine pickup. a full straight through exhaust will drop back pressure through your center section but the easier flow will improve your BHP. Go for it i say
  3. Saxperience Addict Joined: Nov 2006 A farm shed in Aylesbury Posts: 14916 Corolla AE86 Peugeot 205 B18C (in bits)
    #3
    back pressure is an unwanted by-product.
    With a normally aspirated engine you want a fast gas speed. The faster the gas speed is the greater the backpressure, eventually to the point where it hinders performance.
    Go too big a bore and gas speed reduces too much, meaning the exhaust gases simply do not escape fast enough before the next revolution of the engine.
  4. Established Member Joined: Feb 2011 Posts: 1385
    #4
    Quote:
    Originally Posted by KamRacing View Post
    back pressure is an unwanted by-product.
    With a normally aspirated engine you want a fast gas speed. The faster the gas speed is the greater the backpressure, eventually to the point where it hinders performance.
    Go too big a bore and gas speed reduces too much, meaning the exhaust gases simply do not escape fast enough before the next revolution of the engine.
    So to break that down then as techy terms i don't know what you mean, So its actually an increase in performance without back pressure loss if i went for something like a kam racing system or sax sport system with the manifold thats on?
  5. Saxperience Addict Joined: Nov 2006 A farm shed in Aylesbury Posts: 14916 Corolla AE86 Peugeot 205 B18C (in bits)
    #5
    forget backpressure basically. Its not the primary concern.
    The KAM Racing system will certainly increase performance. I dont think there is a system on the market that beats it.