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7.3l d-tronic performance help

20K views 24 replies 13 participants last post by  trackspeeder  
#1 ·
Hey everybody i have a mercruiser 7.3l d-tronic 270 hp and im looking for more horsepower any help??
 
#3 ·
How much more power are you wanting?
there are some simple things you could do like a chip (may be hard to find one for mercruser spasifcly but may be able to get something) or some sensor foolers, then you could bugrade turbo, injectors, and on and on.....

I guess the first thing you'll have to figure out what kind of computer system it has on it, ford or international. they will probably look the same but may have some diferances in tuneing
 
#14 ·
any info on those motors? i heard the injectors were bigger than a trucks. i mean 270 out of an idi w/o smoking out the world is awesome lol. i didn know they made them that new. stanedyne(sp) injector pump or other?
 
#15 ·
I don't know much about the motors except they are down a couple points on compression, different cam?, and rev a little higher.

EDIT- oh wait, the pic I posted is direct injected.
 
#17 ·
I would give Hypermax a call. They were one of the first to hop up the IDI's. You can get a higher output injection pump.

Have you increased the fuel of your factory pump and bumped up the timing any? Those are the simple and "free" things you can do to increase power. Other than that you are looking at bigger injectors, aftermarket pump, internal motor work.

Nice boat.

Marc
 
#18 ·
i dont think that the direct injection "powerstroke" 7.3 came in boats until 99.

i still want to get a hold of an intake off of one of those engines.