I'm planning on running about 8psi on a t3/t4e on a ls longblock, I was wondering if adding fuel (afc) to the 310 would be enough to sustain 8psi. Or do I definitely need the fmu (I uess 8:1 disk) to provide enough fuel?

Maybe I should trade/sell these for some 450cc?

 

it will work, use the search feature.


Rob

 

I used the search but couldn't come up with much. Thanks.

I read that Greddy uses the blue box, would a safc work as well?
I read that 310cc is good to 200-225, wouldn't 8psi on a t3/t4e be very close to the limit?

 

you might need something bigger.....at least 440cc. you need to go pass -35% on the afc to trick the map sensor....im sure you can find some stuff if you do a search.

 

Yeah, I'm still stuck on a dilemma.

I don't have enough money for an aem and to complete the turbo kit. So I'm thinking maybe just a fmu (8:1) and these, plus check valves. Or should I go with a SAFC with DSM 450cc and not have to worry about check valves, but I get to adjust the fuel..

 

I would go with the afc/dsms.
If your really strapped for cash, get an SMC.

 

Didn't work on mine, running 7 PSI would throw codes all over the place. Might work with like 3 PSI or something

 

Yeah, I'd rather get the afc since it would have better resale value.

Would I have a harder time starting the car with larger injectors?

Thanks all.

 

My car cranks right up every time...I noticed no difference in how it starts

 

KC GSR, what do you run your idle settings at? -__% on the afc and what fuel pressure. My car takes a bit more turns to start with the 450s.

 

-25% from 1000rpm and below...i'm have stock fuel pressure. My whole fuel system is stock, the only thing different are the 450s and the afc.

 

I have a walbro and fpr, once the fuel pump was installed I couldn't get my pressure back to stock, even with the fpr. So I fun pretty rich at idle.