8th Generation Honda Civic Forum - View Single Post

blue1 · 04-13-2007, 10:25 PM

The running rich at idle was one of the reasons why I went with a different fuel pressure regulator. The Aeromotive 1000-6 (13109) regulator that is included with the AJP fuel return kit has a base fuel pressure that can be adjusted. The regulator then increases fuel pressure one psi for each psi of boost referenced.

Instead of getting this regulator, I went with the Aeromotive Pro-Series Boost Reference EFI Regulator (13110) that functions in the same manner as the 13109, but also references vacuum. For this regulator, if the vacuum in the intake is running at 16"HG, the reduction in fuel pressure from the base setting measured in PSI would be 1/2 of that or 8 PSI. The 13110 also has larger port sizes so I could run up to a 10AN return line if needed.

Since I am using a different regulator with the same reflash, I will be running more lean at idle (hopefully not too much) and the same as everyone else when running at 0 PSI or higher.

04-13-2007, 10:25 PM	#123 (permalink)
blue1 Senior Member Member Join Date: Aug 2006 Location: Maryland Posts: 3,565	The running rich at idle was one of the reasons why I went with a different fuel pressure regulator. The Aeromotive 1000-6 (13109) regulator that is included with the AJP fuel return kit has a base fuel pressure that can be adjusted. The regulator then increases fuel pressure one psi for each psi of boost referenced. Instead of getting this regulator, I went with the Aeromotive Pro-Series Boost Reference EFI Regulator (13110) that functions in the same manner as the 13109, but also references vacuum. For this regulator, if the vacuum in the intake is running at 16"HG, the reduction in fuel pressure from the base setting measured in PSI would be 1/2 of that or 8 PSI. The 13110 also has larger port sizes so I could run up to a 10AN return line if needed. Since I am using a different regulator with the same reflash, I will be running more lean at idle (hopefully not too much) and the same as everyone else when running at 0 PSI or higher.