ive got a vtr engine n was wondering if my series 1 rallye downpipe would make a difference cuz its abit bigger bore?? thanks
rallye manifold
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#1
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#2Give 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.
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#3will 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