Which FPR are you FI guys using?
06-09-2007, 07:25 AM
#1
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Which FPR are you FI guys using?
A while back I purchased an AEM FPR and planned to have it installed when I convert my fuel system from a returnless to return type. The shop that I am currently using, Speed Force Racing, suggested that I purchase a different FPR as the AEM FPR only allows for static pressure (sorry if I have the terminology wrong) and should have one which allows for dynamic pressure (probably the wrong terminology again). Anyways, they suggested I get something like an Aeromotive FPR. What do you all think?
06-09-2007, 12:38 PM
#3
im not sure if its different because of the returnless system, but my tuner told me to get rid of my FPR when i went EMS... he said that he could control the fueling with the EMS... the FPR was used on my stock supercharger becuase Comptech could only control the amount of fueling by upping the pressure to the stock injectors
06-09-2007, 01:08 PM
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i have the AEM, its good if u have a fuel pressure guage to know what you are running. Alot of boosted people though do run the stock fpr because they can control the fuel by the engine management. but the aeromotive fpr is a good choice also
06-09-2007, 02:32 PM
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Originally Posted by Dsgs2k3,Jun 9 2007, 01:08 PM
i have the AEM, its good if u have a fuel pressure guage to know what you are running. Alot of boosted people though do run the stock fpr because they can control the fuel by the engine management. but the aeromotive fpr is a good choice also
On my last build I had the AEM mounted on the fuel rail and it worked fine. I currently have a remotely located Aeomotive unit.
06-09-2007, 04:25 PM
#7
I am using the CT one with my SC.
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06-09-2007, 05:48 PM
#8
2QYK - Your confusion is between OEM ratio regulators like the OEM, AEM, SARD etc and rising rate regulators like the one Comptech supply with their kit and Vortech's FMU.
The latter increase fuel pressure proportionally to boost pressure (just like the former do) but at an increased ratio. So 1lb of boost results in a 8-12lb (for example) boost in fuel pressure. This is an old-school/ghetto way of providing adequate boost for FI. It is also the way the Comptech and Vortech kits work out of the box, and why they can work without a serious ECU. But all they can really do is go pig rich up top and hope for the best.
Real tuning doesn't require some fancy mechanical FPR. Just adequate injectors and a decent way to control them. I''m using and AEM EMS, 750cc injectors, and an AEM FPR (because it's red).
The latter increase fuel pressure proportionally to boost pressure (just like the former do) but at an increased ratio. So 1lb of boost results in a 8-12lb (for example) boost in fuel pressure. This is an old-school/ghetto way of providing adequate boost for FI. It is also the way the Comptech and Vortech kits work out of the box, and why they can work without a serious ECU. But all they can really do is go pig rich up top and hope for the best.
Real tuning doesn't require some fancy mechanical FPR. Just adequate injectors and a decent way to control them. I''m using and AEM EMS, 750cc injectors, and an AEM FPR (because it's red).
06-09-2007, 06:02 PM
#9
Originally Posted by Soul Coughing,Jun 10 2007, 06:38 AM
my tuner told me to get rid of my FPR when i went EMS...
06-09-2007, 06:16 PM
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Originally Posted by AusS2000,Jun 9 2007, 06:48 PM
2QYK - Your confusion is between OEM ratio regulators like the OEM, AEM, SARD etc and rising rate regulators like the one Comptech supply with their kit and Vortech's FMU.
The latter increase fuel pressure proportionally to boost pressure (just like the former do) but at an increased ratio. So 1lb of boost results in a 8-12lb (for example) boost in fuel pressure. This is an old-school/ghetto way of providing adequate boost for FI. It is also the way the Comptech and Vortech kits work out of the box, and why they can work without a serious ECU. But all they can really do is go pig rich up top and hope for the best.
Real tuning doesn't require some fancy mechanical FPR. Just adequate injectors and a decent way to control them. I''m using and AEM EMS, 750cc injectors, and an AEM FPR (because it's red).
The latter increase fuel pressure proportionally to boost pressure (just like the former do) but at an increased ratio. So 1lb of boost results in a 8-12lb (for example) boost in fuel pressure. This is an old-school/ghetto way of providing adequate boost for FI. It is also the way the Comptech and Vortech kits work out of the box, and why they can work without a serious ECU. But all they can really do is go pig rich up top and hope for the best.
Real tuning doesn't require some fancy mechanical FPR. Just adequate injectors and a decent way to control them. I''m using and AEM EMS, 750cc injectors, and an AEM FPR (because it's red).
