Remapping / tuning 150hp outboard in UK

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SeacretSailor

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I would like to remap a 150hp Suzuki outboard motor - year 2015 for more power. There is a tuner in Australia that want £850 (ish) to tune the ecu to release another 35-40hp. They have an excellent reputation for their work and retaining the motor reliability, but I would rather use someone in the Uk and preferably at a cheaper cost.
Any outboard tuner recommendations?
 
It looks like the 150 uses the same block as the 175 and 200 but the differences are unlikely to be just a 're map' on the ECU
I wouldn't advise doing it tbh,
 
There are lots of chipping threads. Don’t do it.

In a nutshell car engines use a small fraction of their power unless accelerating. Marine engines use a large percentage of power most of the time. More power equals more stress, more heat and then bang.
 
? I had a feeling that would be the response.
My reasoning was, as pointed out, the block is the same as the larger hp options and I wanted to see what could be done safely. I treat my engines well and do not abuse them.
Anyone first hand experience doing it?
 
I have said this several times on other threads but my only experience of this is two engines ( Volvo ) inside a dealers building in Mallorca both chopped by the owner ( not dealer ) and lasted an hour. Both trashed.
 
Block maybe the same but that's not to say that the crank, pistons, gearbox, etc. are, . they could all be using elements from the 130 for example.
I have had two examples of after market chips on tractor engines - we are talking high tech and high spec engines - neither good. One was a 4.2 litre John Deere engine, it ran badly and lumpy as hell with the chip in. We disconnected it after a couple of months. The other was on a 6 litre Valtra engine on a Massey. The dealership had fitted a chip without our realising and it blew part of the gearbox due to overload. £4k to fix.
Actually, we had a Case too where the dealer remapped for more power assuring us that it would be fine. Like the Massey it blew a gearbox power pack.
In essence, I would leave it be unless you can be totally sure that all the components and not just the block are the same. Also the remap could be a bodge or less than perfect.
If it ain't broke, don't fix it.
Just my view on the subject.
 
You don't say the model year, but although the base block and gearcase of the DF150 is the same as a DF200, the cylinder head is not.
DF175 and above have VVT (variable valve timing), DF150 does not, and it's not economical to upgrade all the required parts.
So if you did "chip it", you are mostly own your own, because you'll be pushing a higher power output through a cylinder head that wasn't designed for it.
Even in stock form, some Suzuki's have had issues with cylinder head gaskets - chipping it just increases the risk.

If you need a DF175 or DF200, chop in the DF150 and buy one.
 
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why do some people think they can remap, tune or chip an engine better than the multi million pound company it was manufactured at?
i had some goon remap an iveco truck to by pass the dpf filter, what a mistake,
i asked the goon to return it to the factory setting, but he was unable to.
never again.
if you want something to go faster, buy a faster model.
 
I don't see where that level of increase would come from on a naturally aspirated engine remap. On a car you would be looking at head work, cams, different intake and exhaust I would imagine.
 
On a VVT engine you could mess around with the cam phasing, but that still wouldn't account for 35-40hp.
Injection timing / settings ?
 
I think there is a slight ( slight ) justification in that manufacturers have to balance reliability , noise regs, emissions regs etc. Of course all of those exist for a reason including the law and an acceptable time between failure.
 
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