hey all,can anyone please tell me the what pressure to set my r/r reg ,T70 on 7psi,std inj/ecu...for now,cheers

every car is different it needs to be put on the dyno.

what rising rate is it? 2:1, 8:1, 10:1?

Std fuel pressure is 38 Lb ..
The higher you run fuel pressure the harder it is on your fuel pumps to keep up supply..
If aftermarket ECU ? Then 40 Lb is generally used ..
Depends on injector size etc ???
Most fuel regs are rising rate..
Its the ratio they run at...
Most std fuel regs are 1 to 1 and work fine with reasonable boost...
The only time a bigger reg is required ? Is when fuel supply is way over what reg can regulate...
Over 350 rwkw or so you'll require atleast -8 fuel supply lines and -6 return...

Standard EF / EL regs are 38 lb as Graeme has mentioned.

EF / EL Tickford regs are ~40 lb from memory. Tuning around 38lb is good for off-boost economy / lean cruise modes.

For your application (standard inj / ecu) with 7psi...I'd say you would be looking at 50 + psi fuel pressure (ballpark) at idle.

Thanks all for your help.My reg is 2:1 ,i set it at 48 psi and wow it really helps,good economy off boost,only now that it makes some good power i`ve blown my head gasket,so will spent 2morrow sorting that out...