WANTED 115hp mercury/mariner optimax ecu

[LeewayComposite]

Looking for a 115hp merc/mariner optimax ecu needs to be in working order.

[HUMBER P4VWL]

presume you are trying to upgrade a 75 or 90?

If so, if you get one, i'm sure a few on here would be interested to see if there are any other parts that need changing and how you get on.

I was told when purchasing a v6, the ecu was the only difference.

Same for the 135 150 175 V6 range.

[Downhilldai]

Originally Posted by HUMBER P4VWL

I was told when purchasing a v6, the ecu was the only difference.

Same for the 135 150 175 V6 range.

175 has a different block to the 135/150 Opti.

[Turbodiesel]

Originally Posted by Downhilldai

175 has a different block to the 135/150 Opti.

I have one!


Give me a call or PM. Its brand new in box.

01503 265898

[HUMBER P4VWL]

TurboDiesel - sorry, it's leeway in the OP who is after an ECU and wants one for a 115

DHD - RE the 135, 150 and 175 block, it is my understanding they are all the 2.5L V6 engine. Or do you mean three is a slight difference in the block, perhaps bored out or something as well as a different ECU? I'm curious now. The 175 was always priced a lot higher than the 150.

Or do you mean at present the only 175 is the four stroke? obviously different. As shown below.

http://www.mercurymarine.com/engines/outboards/

The 200 and 225 etc were a 3.0L block, different again.

[Downhilldai]

Originally Posted by HUMBER P4VWL

DHD - RE the 135, 150 and 175 block, it is my understanding they are all the 2.5L V6 engine. Or do you mean three is a slight difference in the block, perhaps bored out or something as well as a different ECU? I'm curious now. The 175 was always priced a lot higher than the 150.

The 135, 150 & 175 are all 2.5 litre V6 blocks, but the 175 is physically different (I'm not sure to what degree), so it isn't simply a matter of changing the ECU to convert a 135/150 to 175hp. I'm not sure what, if any, hp increase would be achieved by fitting a 175 ECU to a 135 or 150 Opti. If you lob your ECU in the post to me, I could give it a few test runs on the river to find out?

AFAIK, upgrading a 135 Opti to 150hp only involves an ECU swap, but the 135 lower unit has a different ratio to the 150, not that this has any bearing on horsepower.

[LeewayComposite]

Originally Posted by HUMBER P4VWL

presume you are trying to upgrade a 75 or 90?

If so, if you get one, i'm sure a few on here would be interested to see if there are any other parts that need changing and how you get on.

I was told when purchasing a v6, the ecu was the only difference.

Same for the 135 150 175 V6 range.

no not upgrading, i have a swamped 115hp and most of the electrics died. i know there are differances between 75/90/115 but dont know all the ins and outs sorry!

[LeewayComposite]

Originally Posted by Turbodiesel

I have one!


Give me a call or PM. Its brand new in box.

01503 265898

I will give you a ring tomorrow as just seen your message and its late

[willk]

Originally Posted by LeewayComposite

i have a swamped 115hp and most of the electrics died.

Just a Splash or totally sunk?

[wiLlfish]

Originally Posted by willk

Just a Splash

yew shudunt yewse de 'S' werd yew norty leprecorn

gow an doo sum rivverdansin orr sumfink

Originally Posted by willk

or totally sunk?

mynor problum

transum fel orf.