Which Test Pipes yield the most proven whp gain?

Jordo!

I see the Art pipes in the same league as the G3's: Yes, they do make a little more power than the less expensive alternatives (ebay TP's or brand name resonated and panel filtes+smooth tubes, respectively), but they are a LOT more expensive.

If you have deep pockets and want to squeeze every last possible hp out of the motor, then I say go for it. If not, the cheaper alternatives get you literally within a few whp at a fraction of the cost.

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