Remapping Outboards

[Limecc]

Came across this and thought I would share.
The link below is pasted as an example of how a Suzuki DF 15/20 can be liberated but this is also available for other engines as well.

https://www.dimsport.it/en/applications-list/unique/marine/suzuki-marine/outboard/df20-03l-15kw20hp-mitsubishi/details/

[HDAV]

You can remap anything with an ecu.......

Doesn’t mean it will be any better tho........

[Limecc]

Originally Posted by HDAV

You can remap anything with an ecu.......

Doesn’t mean it will be any better tho........

This is clearly incorrect where the manufacturer uses it as a restriction. In the Suzuki example given it would save you the price difference between 15 and 20 hp models by allowing the engine to rev out and develop the extra horses.

Maybe a 20hp twin cylinder could be made to put out 25hp thus saving the weight of moving to a three cylinder 25hp.

[Allye]

It’s the age old thing, reliability > power > efficiency. Something has to give, you can’t have all three!

I’ve remapped every diesel car with an ECU I’ve ever owned so your preaching to the choir with me. Gains with naturally aspirated petrol in terms of outright power will be minimal, where remapping comes into its own is smoothness, power bands and efficiency.

[Limecc]

Originally Posted by Allye

It’s the age old thing, reliability > power > efficiency. Something has to give, you can’t have all three!

Nothing has to give. The engine components DF15 -> DF20 are the same and have the same part numbers (except for the ecu of course).

[Allye]

Originally Posted by Limecc

Nothing has to give. The engine components DF15 -> DF20 are the same and have the same part numbers (except for the ecu of course).

So some efficiency and mild longevity will suffer......