Adjustable Regulator Query

[mawzy]

Hi all. Just after peoples opinions here. Personally not a fan of them, but the reason I'm looking into it is to lower my fuel pressure. I have an in cabin gauge, with factory pump, injectors and tune, runs at 42psi on idle. A while ago I set my bosch 044 up intank and it was running 56psi at idle. I changed back to factory pump for the mean time. Wanted to sort some other issues parts etc. Now I'm gearing up to put pump back in along with some 600cc inj, but was thinking i mite need to put a reugulator in the mix to get pressure back down to 42mark. I'm looking at getting a nismo regulator, mostly for the ease of installation, and not having a remote mounted one. Now should i be worrying about doing this or, simply run at the 56psi? thanks for any input help guys.

[rob82]

Hi all. Just after peoples opinions here. Personally not a fan of them, but the reason I'm looking into it is to lower my fuel pressure. I have an in cabin gauge, with factory pump, injectors and tune, runs at 42psi on idle. A while ago I set my bosch 044 up intank and it was running 56psi at idle. I changed back to factory pump for the mean time. Wanted to sort some other issues parts etc. Now I'm gearing up to put pump back in along with some 600cc inj, but was thinking i mite need to put a reugulator in the mix to get pressure back down to 42mark. I'm looking at getting a nismo regulator, mostly for the ease of installation, and not having a remote mounted one. Now should i be worrying about doing this or, simply run at the 56psi? thanks for any input help guys.

The 044 is overloading the return flow rate of the std regualtor the problem with this is that you will have varying fuel pressure under light load. THis is about the only time I would recommend using an aftermarket item - not sure if the nismo's have that much more return flow rate then the factory item, a sard will work fine tryed and tested.

[JonnoHR31]

could be a faulty reg that cant open all the way. try another stock one if you can get your hands on one easily

[R31Nismoid]

^ ye i'd be checking that.

I run a 044 off my surge and don't have any issues like that!

[TiTAN]

044 pump with stock fuel reg here, no problems holding 42psi @ idle.

[mawzy]

Thanks for that guys. i do have another factory regulator there so will test that and pump again. So it's likely a regulator fault, but is it odd that it only shows as a problem with the bosch pump? I have no issues with factory setup in there. or is it just the extra flow/pressure that causing the greif? Also if the other reg doesn't resolve my issue, people recomend not buying a nismo regulator? Thanks

[JonnoHR31]

could be opening far enough for the standard pump but jams before opening far enough to hold 42psi with the 044 as it flows a lot more than the stocker.

not sure bout the nismos but cant see it having any trouble. if you do go an aftermarket reg make sure its a quality one like nismo, tomei etc. i have a tomei reg and it works perfecly