hi i have a 4x4 saph running stage 1 at the mo and after reading a thread on here am worried about the injectors being on the limit so i am getting some greens ,3bar,and my msd chip sent back and changed,my question is can i still run the same boost as stage 1 with the new set up as i don't want to start pushing the t3 to it's limits then needing a turbo just wan't safe reliable power so was thinking of 15-17psi or would it just overfuel

 

It needs setting up to instructions with chip as that what map is written for, if you don't then it wouldn't run correctly, if you don't want to go this far you would need to go to somewhere like nms and have the car set up correctly to what boost you want, but I wouldn't worry about it and just fit stage 3 and set it to recommended settings, shouldn't cause any issues unless something is amiss with your car.

 

it's only an issue if they cannot flow enough fuel, so at stage 1 the standard injectors are fine.

By doing as you say you are upgrading to stage 3 which is pointless as you stage you still want stage 1 power, yes, of course, as thats what mapping is, only the quanitity of fuel required is used, the precision can be further improved with the addition of C/L, which you may or may not have, if you have YBG (Green cam cover) then you have it.

Plus if you ever do decide I would get Siemens 55LB injectors, opposed to Bosch.

Martin