Ok building my wife a new ski and am wondering which pipe I should put on her 96 superjet I have a riva free ride pipe or a factory type 9 which one will creat more power?
the riva dry and the factory type 4 are the same pipe. factory makes the riva pipe and machines the manifold riva. if you want to burn motors up, go with the 9. lots of power with the 4 and i think lots of hood mod with the 9. power difference is probably insignificant.
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