Can the merc 250 v8 be remapped to a 300?
08-14-2021 | 06:25 PM
#21
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Joined: Jan 2006
Posts: 3,869
Likes: 797
From: St. Pete Beach, FL
The PRO XS all rev to 6,200, the 250 Pro XS is the same as the 250R power wise (270 ish HP). The 300R has different cams, intake, ecu; makes significantly more than 300 HP. The regular four strokes have different exhaust and tuning. They may have different intakes but I don't know for sure.
The HP difference between a 250 ProXS and 300 ProXS is small, not worth messing with.
The HP difference between a 250 ProXS and 300 ProXS is small, not worth messing with.
I suspect the I6 may be on the way out and they go up to 350hp NA.
08-14-2021 | 07:10 PM
#22
Gold Member
Joined: Jun 2014
Posts: 3,615
Likes: 1,242
From: Thailand
Only guesswork, I’m not a mechanic. 🙂
RR
