Brett, I have a VL turbo regulator if you want it. Carcrazy

am i going stupid, wasnt there another explanation here this morning? did anyone else read it? Anyway.... Thanks carcrazy but i dont think theres any difference between the two fuel pressure regulators besides the mounts on them for the different intake manifolds. Im still going to be using my N/A manifold so ill still be using the N/A fuel pressure regulator. spiritfc the reason for the different part numbers might be because of the different mounts. Someone correct me if i am wrong. Wouldnt have people asked all these sorts of questions before surely we arent the only people on here doing turbo conversions. Somebody please help so we can stop talking in circles.

Yeah that was my bloody explination!!! Where the f***'s it gone :x I'm not writing all that crap again. Short version - turbo and na regulators are the same, different brackets so different p/n's. Fuel pumps may be different but both will work either way as pressure is controlled completly by the regulator! and the volume is of fuel used is controlled by the computer. Usually any efi pump will supply more than twice as much fuel as needed for a stock engine. Problems occur when bigger injectors are fitted and the pump can no longer supply enough volume, pressure drops and causes lean out. Any other questions anyone? :?:

I hope I can successfully make my point one more time - GOOD PRESSURE DOESN'T MEAN PROPER VOLUME! As an eg a clogged filter may test OK on pressure, but restriction may not allow proper volume under load! The volume of fuel is not controlled by the computer. The computer only controls the injector pulse width and duration (the time the injector remains open for fuel to squirt) after receiving inputs from other sensors (AFM, O2, coolent temp etc) plus input from it's own pre-programmed maps - depending on if it's running in closed loop or open loop at that point in time. So if one increases fuel volume for a given time the injector stays open then more fuel will be injected even though the signal from the computer to the injectors has remained the same. I agree with 2invl in that the pressure reg for NA and turbo shouldn't be different. The diff being one measures and pressurises the fuel rail above atmosphric whereas the N/A doesn't/can't (whereas it could if it were on a forced induced engine).

I rang Bosch and they said that you can NOT use a turbo pump on a NA. Reason being is that the turbo pump has a much higher pressure rating then the NA one and that you are risking rupturing the short synthetic hoses up near the moter and also near the pump itself which could potentially catch fire/explode.