spiderpigcity Posted September 10, 2009 Share Posted September 10, 2009 I am just wondering what the fuel pressure should be regulated to on my boostlogic fpr. Currently it is at 40 psi. Does anyone know what it should be running at for t67 single 780cc? Link to comment Share on other sites More sharing options...
TLicense Posted September 10, 2009 Share Posted September 10, 2009 You can run any pressure you want, within reason. The ECU will be mapped at that pressure so it doesn't make to much difference, but my personal preference would be to set it to the pressure that the injectors were tested at. If you set it to anything else they won't flow 780cc and you'll then be having a bit of a guess at the flow patterns etc. Link to comment Share on other sites More sharing options...
spiderpigcity Posted September 10, 2009 Author Share Posted September 10, 2009 You can run any pressure you want, within reason. The ECU will be mapped at that pressure so it doesn't make to much difference, but my personal preference would be to set it to the pressure that the injectors were tested at. If you set it to anything else they won't flow 780cc and you'll then be having a bit of a guess at the flow patterns etc. From what i can find on the net on denso 75lb 780cc injectors it should be 43 psi. Can someone confirm that? thanks Link to comment Share on other sites More sharing options...
Ian C Posted September 10, 2009 Share Posted September 10, 2009 43psi is the standard pressure for off-the-shelf injectors, from what I've seen. I personally ran mine at 38psi static as that's what the stock setup ran at. If I started again I'd set 43psi, but I can't be arsed remapping the car just because of that. -Ian Link to comment Share on other sites More sharing options...
spiderpigcity Posted September 10, 2009 Author Share Posted September 10, 2009 43psi is the standard pressure for off-the-shelf injectors, from what I've seen. I personally ran mine at 38psi static as that's what the stock setup ran at. If I started again I'd set 43psi, but I can't be arsed remapping the car just because of that. -Ian Thanks Ian Link to comment Share on other sites More sharing options...
nero Posted September 15, 2009 Share Posted September 15, 2009 40-45psi static is fine, the injectors typically are fine if run even higher then that. Just don't change the fuel pressure after you tune the car, then the tune will be thrown off. Link to comment Share on other sites More sharing options...
spiderpigcity Posted September 16, 2009 Author Share Posted September 16, 2009 40-45psi static is fine, the injectors typically are fine if run even higher then that. Just don't change the fuel pressure after you tune the car, then the tune will be thrown off. my aermotive fpr has a vacuum line connected to the inlet manifold. does this need to be disconnected then? Link to comment Share on other sites More sharing options...
paul mac Posted September 16, 2009 Share Posted September 16, 2009 my aermotive fpr has a vacuum line connected to the inlet manifold. does this need to be disconnected then? noooo this is how the FPR gets its reference, buy yourself a good book such as "forced induction tuning" by A.Graham Bell Link to comment Share on other sites More sharing options...
johnny g Posted September 16, 2009 Share Posted September 16, 2009 noooo this is how the FPR gets its reference, buy yourself a good book such as "forced induction tuning" by A.Graham Bell Did he write that after he stole the idea of the telephone off Elisha Gray? Link to comment Share on other sites More sharing options...
paul mac Posted September 17, 2009 Share Posted September 17, 2009 Did he write that after he stole the idea of the telephone off Elisha Gray? he's a busy guy, telephones one millenium, tuning engines the next Link to comment Share on other sites More sharing options...
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