so whats the most i can get?

[cyrez187]

so i currently have the master performance kit from howell,fidanza axles,lsd with dual friction centerforce clutch,star stage 2 turbo kit,all new valves,retainers,springs, and for fuel system have hahns 8 injector setup.prob forgetting some stuff just woundering whats the max boost i can get?
and for the fuel system when do the other injectors kick in, like right when it sees boost and then just run mad rich or what? thanks guys

 

[clipsit]

I am not exactly sure how much boost you can run, but it's all about tuning, which if you haven't heard before you will. You can run as much as you want, but you got to make sure you have the fuel setup...pump, injectors...what size?...etc. See where I am coming from? Your wideband or af gauge should read 'mad' rich when it hits boost b/c it's dumping more fuel. I don't see why you can't run at least 20 psi if not 25+ if you want, just got to tune, tune, tune. I assume you are fully built too? Lower compression pistons and all the goodies that Howell offers? Let us know some more specifics.

 

[selmerguy]

They walbro 255 fuel pump will flow enough fuel fo a little over 25 psi. That would be you limit I guess. It is all about tuning though. It is very hard to say how much you can boost with out knowing what size injectors you are running.

 

[cyrez187]

well i have a set of the stock ones and another 4 550cc's, how would i be tunning with the 8 injector setup?

 

[VelocitàPaola]

just woundering whats the max boost i can get?
and for the fuel system when do the other injectors kick in, like right when it sees boost and then just run mad rich or what? thanks guys

The PortFueler system only supplements the A/F mixture with additional fuel when it sees boost. I wouldn't say it makes you run "mad rich," rather, it adds the necessary fuel accordingly.

The PortFueler control box should come pre-programmed with the secondary injector size you'll plan to be running. If you'd like to change that value, you can do so by connecting the control box to a Windows compatible PC and the proper interface (available from Hahn) - this is apart of what's meant by "tuning." With the interface, you'll be able to more closely read and adjust the fuel curve under boost to provide optimal A/F ratios and horsepower.

By the way, Hahn claims PortFueler will handle up to 27psi of boost.