Guest horneymikef Posted June 17, 2008 Share Posted June 17, 2008 all cosmetic yes and little extra power for u all ............ i have fitted an after martket fpr as the original one is a two bolt on the fuel rail the aftermarket one will control the standard one due to holding back presure as designed to i'm looking for the stanard presure or just above to set the aftermarket one up to thats all but does look good will add pics in about 3 wks so u all can see as car in garage now sounds bit hard etc but i dont really speed ( now and then) so power not really an issue but looks yes gota have got few more bits to do but all money so in time like everything does anyone know the standard pressure setting ? Quote Link to comment Share on other sites More sharing options...
Guest horneymikef Posted June 17, 2008 Share Posted June 17, 2008 Its a very well thought out set up obviously! very well thought out yes as standard one doesn't need to be taken out as aftermarket one will keep open Quote Link to comment Share on other sites More sharing options...
Homer Posted June 17, 2008 Share Posted June 17, 2008 Stock fuel pressure is recommended in the service manual between 33 and 38 psi I believe (varies a little with age of the fpr and other enviromental conditions). I still don't understand your logic here, are you weathly enough that you risk melting your engine for the sake of a shiney fpr in the engine bay? Edit - are you saying you've removed the adjuster from the new fpr so it's just feeding fuel straight through it without changing the pressure? It's SO easy to remove the stock one, why didn't you just do that? Quote Link to comment Share on other sites More sharing options...
Guest horneymikef Posted June 17, 2008 Share Posted June 17, 2008 havent got the injectors yet but working on them and yes aftermarket fpr with stock but aftermarket will controll all sounds complicated but not Quote Link to comment Share on other sites More sharing options...
Pabs Posted June 17, 2008 Share Posted June 17, 2008 if the aftermarket FPR will keep open, how the hell does it increase power??? Perhaps it should be called an FPG - Fuel Pressure Gauge... as that's all it would be doing, as it won't be regulating anything. Quote Link to comment Share on other sites More sharing options...
JustGav Posted June 17, 2008 Share Posted June 17, 2008 Hold on.... If I'm understanding right under all this punctation... Fuel pump -> fuel rail -> stock FPR -> aftermarket FPR -> injector.... So you are taking the stock pressure and then lower it ???? If that is the case then you will end up UNDERFUELING the car... lean = bang! Quote Link to comment Share on other sites More sharing options...
Guest horneymikef Posted June 17, 2008 Share Posted June 17, 2008 u set to over stock setting which will then keep standard one open as pressure will be stronger than normal which in turn will regulate Quote Link to comment Share on other sites More sharing options...
JustGav Posted June 17, 2008 Share Posted June 17, 2008 u set to over stock setting which will then keep standard one open as pressure will be stronger than normal which in turn will regulate hey? what? Quote Link to comment Share on other sites More sharing options...
Guest horneymikef Posted June 17, 2008 Share Posted June 17, 2008 Fuel pump -> fuel rail ->injector.... stock FPR -> aftermarket FPR -> Quote Link to comment Share on other sites More sharing options...
couv3z Posted June 17, 2008 Share Posted June 17, 2008 (edited) are you trying to end up with this as a result? bling bling and please note fuel pump---> FPR---> fuel rail ---- injector is surely the way it works Edited June 17, 2008 by couv3z (see edit history) Quote Link to comment Share on other sites More sharing options...
Guest horneymikef Posted June 17, 2008 Share Posted June 17, 2008 thats exackly how is but i dont have the kit to change on rail got over size end so will change at later date looking for it at mo but thanks for the pic i know i got it all correct now Quote Link to comment Share on other sites More sharing options...
Jake Posted June 17, 2008 Share Posted June 17, 2008 please note fuel pump---> FPR---> fuel rail ---- injector is surely the way it works No, the FPR is on the return. Quote Link to comment Share on other sites More sharing options...
bolarbag Posted June 17, 2008 Share Posted June 17, 2008 Its a very well thought out set up obviously! Sorry meant to add this:rolleyes: It has got to be the worst mod since neons, absolutely pointless, u set to over stock setting which will then keep standard one open as pressure will be stronger than normal which in turn will regulate, your logic here is wrong, an aftermarket regulator wont regulate if it is set to higher than stock static pressure and after the stock fpr, All your doing is letting the fuel flow on the return path, there will be no performance gain whatsoever, and your pressure gauge if you have one on the aftermarket fpr, will not be giving you fuel pressure to the injectors Seriously take it off, the aeromotive ones are reliable at best of times but even they are known to be at fault sometimes, if you cant even match the reliability of an aeromotive then I'd give up fitting it altogether You do not need an aftermarket fpr until after bpu, fueling is sufficient at normal static pressure Quote Link to comment Share on other sites More sharing options...
Dash Rendar Posted June 17, 2008 Share Posted June 17, 2008 Quote Link to comment Share on other sites More sharing options...
Ark Posted June 18, 2008 Share Posted June 18, 2008 I'm scared by the variety of apparent locations of the FPR in different cars Quote Link to comment Share on other sites More sharing options...
DamanC Posted June 18, 2008 Share Posted June 18, 2008 This thread is missing something, ill add them; ..,,..,..,....,,. Quote Link to comment Share on other sites More sharing options...
couv3z Posted June 18, 2008 Share Posted June 18, 2008 No, the FPR is on the return. so the FPR regulates the pressure back to the fuel tank? Quote Link to comment Share on other sites More sharing options...
bolarbag Posted June 19, 2008 Share Posted June 19, 2008 (edited) so the FPR regulates the pressure back to the fuel tank? Correctomundo! The wording is slightly wrong there tho, the fpr regulates the pressure in the rail, in turn a low pressure would flow more fuel back on the return path Edited June 19, 2008 by bolarbag (see edit history) Quote Link to comment Share on other sites More sharing options...
JustGav Posted June 19, 2008 Share Posted June 19, 2008 Correctomundo! Nooooo... The FPR maintains pressure on the fuel rail side with the excess pressure being vented backed to the fuel return pipe. Quote Link to comment Share on other sites More sharing options...
bolarbag Posted June 19, 2008 Share Posted June 19, 2008 I meant to edit, wasn't fast enough:p chatting about how the fk I'm going to get to work tomorrow! Quote Link to comment Share on other sites More sharing options...
Guest horneymikef Posted June 21, 2008 Share Posted June 21, 2008 thanks to all who have responded on this after looking at the fuel rail fpr is at the front (engine) and looking at it the fuel goes in at the back and out at the front then pushed back to the tank, the fpr keeps the presure to the rail once presure is reached then opens up and lets back to tank ............. eg as long as aftermarket fpr is set at same or less than, will not make a diference and still work and show presure which is all i want to which will be set to standard and still look good at the end of the day i dont want extra power really (well just a little) but just posing lol Quote Link to comment Share on other sites More sharing options...
JustGav Posted June 21, 2008 Share Posted June 21, 2008 thanks to all who have responded on this after looking at the fuel rail fpr is at the front (engine) and looking at it the fuel goes in at the back and out at the front then pushed back to the tank, the fpr keeps the presure to the rail once presure is reached then opens up and lets back to tank ............. eg as long as aftermarket fpr is set at same or less than, will not make a diference and still work and show presure which is all i want to which will be set to standard and still look good at the end of the day i dont want extra power really (well just a little) but just posing lol Your call..... Quote Link to comment Share on other sites More sharing options...
Steve Posted June 21, 2008 Share Posted June 21, 2008 Oh dear Quote Link to comment Share on other sites More sharing options...
miko_supra Posted June 21, 2008 Share Posted June 21, 2008 Did you go to school by any chance? Quote Link to comment Share on other sites More sharing options...
Ark Posted June 21, 2008 Share Posted June 21, 2008 thanks to all who have responded on this after looking at the fuel rail fpr is at the front (engine) and looking at it the fuel goes in at the back and out at the front then pushed back to the tank, the fpr keeps the presure to the rail once presure is reached then opens up and lets back to tank ............. eg as long as aftermarket fpr is set at same or less than, will not make a diference and still work and show presure which is all i want to which will be set to standard and still look good at the end of the day i dont want extra power really (well just a little) but just posing lol If you set it less, you will gauge less pressure than the injectors will be getting, making it pretty pointless. Quote Link to comment Share on other sites More sharing options...
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