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Search: Posts Made By: F-2 Speedy

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Forum: General Boating Discussion

06-30-2015, 08:31 PM

Replies: 18

Thoughts on this upgrade for a 525 EFI?

Views: 7,946

Posted By F-2 Speedy

A bud of mine had 3.3 whipples on stock 525 long...

A bud of mine had 3.3 whipples on stock 525 long blocks with custom tune, I think they were 750+ never dyno'd and they ran great for a couple years,( low hours ) went 103 in the shoot out couple...

Forum: General Boating Discussion

06-29-2015, 10:40 AM

Replies: 18

Thoughts on this upgrade for a 525 EFI?

Views: 7,946

Posted By F-2 Speedy

Looks like you get a new ecm with the programming...

Looks like you get a new ecm with the programming done, exchange on the throttle body to, bare heads ? I don't see any valves, springs, retainers in this package. Personally I would put a custom...

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