Magnum 350 EFI modifications??

[Ranman]

Is it possible to modify the 350 EFI easily? I'm assuming this is a "speed density" motor that will not respond to engine modifications. What needs to be done to squeeze out extra HP?

[seano]

You can start with exhaust from Eddie Marine or CMI...I think Stainless Marine may make a set also...easy bolt on power---

ATI will also be coming out with a Procharger for this engine later this summer and I bet you can get substantial hp increase from one of those units.