2.5 adjustable ECU?????????

[reaction200]

has anybody heard of this and where can i get one?a buddy of mine has one and we put it on a 225 promax and it woke it up big time.i was wondering if anybody know where to get one and how much.

[samari]

Was it a brucato pcu?

http://www.brucatosvs.com/

[reaction200]

it looked like a standard mercury ecu with a knob on the side of it and he told me it was a merc ecu that are getting harder to find.

[Jay Smith]

Most ALL of the Hi Per Mercury ECU's have adjustable fuel curves, (nothing new ) . All you need is a DDT/OTC to see how much your moving the pot that adjust the fuel curves rich and lean...Some have an external pot like a "steam wheel " that can adjust the curve on the fly, again very common , I had one of those on my analog ECU in 1994

Jay

[John Richied]

I believe that maybe the camouflaged version of the Mercury ECU with Tony Brucato’s’ PCU/ACU inside.

[reaction200]

ddt/otc what is that ......im not follwing you jay speak my language hahahahahah i dont know all those technical terms.

[samari]

The ddt is mercurys version of a scan tool, there is a version from otc as well.

[reaction200]

so with that scan tool can you adjust stuff with it also?

[samari]

There is a set screw on the ecu the ddt only shows you where it is set at as far as rich or lean from it's factory settings.

[Dave Strong]

You should have some type of EGT, way of watching your exhaust temps before you start playing with your fuel curve-mixture.:eek: JMO

Dave:smiletest:

[propmanjay]

You want to have a EGT gauge for sure.

[patchesII]

Do not attempt to adjust on the ecu without a ddt to tell you where you are!!!!!!!!!!

[CSG]

Rapair (sp?) did one for me with the potentiometer.

[patchesII]

With a steamwheel or potentiometer is one thing cause it has a much courser adjustment. My statement about not doing it without a DDT was in reference to the fuel pot built into the back of Hi Perf ecu's. It has a very fine adjustment