fuel pressure regulator Q's

[RGVFAST]

im replacing my td07 with a t78 turbo

currently have 550cc injectors making 403rwhp ,not sure of the duty cycle

im looking to get 450ish with the t78, more if i have/ can get the fuel

will a rising rate fuel pressure reg be able to supply the fuel to support 450-500 hp with the 550cc i already have? and if it can is it safe


lemme know pros and cons
ROss
________
gsx 650 f (http://www.suzuki-tech.com/wiki/Suzuki_GSX_650_F)

[Scradly]

I have 550cc injectors in my r32 making about 290rwhp. The duty cycle is only on about 45%. So would say that they should be more than enough. Anyhow a pressure reg will help but you should get by without one.

[Joe]

Are you sure its 45% duty cycle with 290rwhp? That sounds extremely low for a 550cc injector..

I dont know how you Nissan guys get away with running such small injectors!

My 565cc injectors were hitting max duty cycle at 5000rpm, so we had to taper the boost right off to keep the engine safe.

I've now got 850cc injectors coming, so I'll see if that can keep me safe for a while! :)

[Scradly]

Thats because you only have 4 injectors. I have 6.

[Brockas]

Ross are you still running a side-feed setup?

If so, do not fit a fuel reg on and raise the pressure. You will run the chance of blowing out an "O" ring.

If you want to raise the pressure, get a top-feel fuel rail off www.importbitz.com and then you can compensate for the pressure by tightening them down.

[Bogrolls]

top feed injectors are killer cheap compared to side feed
that rails pretty cheap too, 800ish cc inj's will be fine,
what fuel pump do you have aswell pull that out and check it,