2002 Mercury 225 EFI performance mods

[Chaz]

Honda own's Keihin .. who knows if they started out life in a bike, car or outboard.

What matters is that they fit the parameters mentioned above.

If they don't .. they will operate from 36 PSI to 100 PSI , get in good with your injector guy and make sure you have adequate pump and an adjustable regulator to wind up @ 500cc / min.

Deca injector / PCM map … your on your own !

Pink tip …



White tip ...

[Freedom92]

Who would you suggest I send my single ecu to for reflash? How long is the turnaround and what's generally the cost? Just need to estimate how many pennies I have to save up to do all this.

[Freedom92]

Thanks Chaz and Todd D for pointing me in the right direction.

[Chaz]

Get ya some "Slick 50" .. ya won't be disappointed …

Ohh me ribs are a hurtin now …

[Freedom92]

Will this mod require a fuel pump or fuel regulator upgrade?

[Todd D]

300x copy motor with Stock crank no. Upgrade to a 3.2L crank and yes!

[Chaz]

On the adjustable regulator … depends on the maturity level …

Keep turning it down, and it will go faster with each 1/2 pound drop in pressure … right up until it saw's the block in half …

Please don't "axe" me how I know …

So, here's an interesting read. Never thought about running a peak and hold injector on a system designed for saturated injectors … by just adding a resistor in line .. LOL

https://maxxecu.com/webhelp/wirings-...r_outputs.html

[Freedom92]

On the adjustable regulator … depends on the maturity level …

Keep turning it down, and it will go faster with each 1/2 pound drop in pressure … right up until it saw's the block in half …

Please don't "axe" me how I know …

So, here's an interesting read. Never thought about running a peak and hold injector on a system designed for saturated injectors … by just adding a resistor in line .. LOL

https://maxxecu.com/webhelp/wirings-...r_outputs.html

What should the pressure be run at?

[ilpo]

What ecus u guys run with 300x style intake and Torquespeed Racing 59cc cnc cut heads?
Performance 6500 or Modified 7200?

[Chaz]

What should the pressure be run at?

Each motor is different. Some guys have everything but compression. Some do nothing but add a too much compression .. each will require a different tune-up.
Can't do no harm starting high 43 -45 psi. to make sure everybody's happy. Tune from there .. but 39 - 40 psi should be about the bottom , unless you have a bunch of extra injectors that flow differently and the time to bump them around from hole to hole to get all the cylinders to run the same. Tune to the worst hole , all we have is a global pressure adjustment and maybe a colder plug in the hot (lean) hole or two .
Fuel wash on the piston crown, spark plug color, egt sensors, all reveal important info.

[torquespeed]

Hey Chaz

How you going mate ?

cheers Leon

[RSWORDS]

TorqueSpeed ouwe r ya mate .. ???

I'm full go on me practicin Kiwi, so I can hear what ya tellin me .. widout sayin it over again ...



Now at's a niofe ... or maybe two ...



How you say ... no worry's mate .. or Tally~ho~ the fox MF ...

Ohh me ribs ...

*cough* that's a nice chunk aluminum *cough*

[Chaz]

First two bumps of the key on a early model ...

https://www.facebook.com/benny.ferna...5920904575532/

[Freedom92]

Chaz will the billet reed plate being thicker still fit under my original efi cowling? Will I have to make linkage rods or do you offer them?

[aj5099]

Any issues with this setup? I just put 300 efi fuel and ignition on my 2001 efi I also have chris carson reeds and block stuffers.