rallye manifold

  1. #1
    ive got a vtr engine n was wondering if my series 1 rallye downpipe would make a difference cuz its abit bigger bore?? thanks
  2. #2
    Give it a go mate. Not sure many people on here have tried that. I know sometimes a bigger bore in/out manifold can cause the engine to run lumpy on idle.
  3. #3
    will be better than standard as the rallye dps were twin split and not just hollow did this on my car its very minimal differences like