gregandkathy
Cadet
- Joined
- May 25, 2010
- Messages
- 7
I have a 2006 Merc Optimax, 75 HP. The engine specs are identical for the 75,90,115 from what I have researched. I read somewhere, that with a different "chip" a 75 can become a 90, or even a 115. I really like the 75, and it is great with fuel consumption, so bumping up to 90 may speed things up, but no doubt increase fuel consumption, but I can handle a little more gas eating. Not sure i even would do it, but can a 75 become a 90, without stressing the motor ?