Editing Piper S2 4-2-1 Manifold Fitting (section)

== Result ==
Much more low down torque, gives the car a whole new set of driving characteristics. Most notably when pulling away at lower speeds and gives a much better range for changing up and down. Much improved engine note - much 'cleaner', less boom and noise. Additionally, when slowing at speed the momentum is maintained much longer when throttling back, the engine note changes gentle and progressively. Haven't had the chance to experience differences at top end of the rev range. No difference in MPG / oil usage noted at this time.