(1) 25 ¼” line complete with hose ends
(2) 7 ½” line complete with hose ends
(3) 6” line complete with hose ends
(4) 3 ¼” line complete with hose ends
(5) Regulator/bracket assembly with fittings installed
(6) Machined spacers for FPR bracket
(7) Bolts and washers for FPR bracket
(9) Vacuum line with reducer
(10) Three Redhorse 881-08-06-2 (3/8 quick disconnect to 8AN male) fittings
(11) Redhorse 881-06-05-2 (5/16 quick disconnect to 6AN male) fitting
(12) Redhorse fitting with fuel pressure gauge installed
(13) Redhorse ORB to AN fitting
(14) GT1R V2 Fuel Rail kit with cross-over line and mounting bolts
(15) Zeitronix flex-fuel sensor
(16) Flex fuel mounting bracket
(17) Zeitronix display
(18) Three mounting bolts for Zeitronix sensor and mounting bracket
(19) Bolt and spacer for sensor mounting bracket
(20) Wire harness for Zeitronix sensor
The GT1R Fuel Line/Flex Fuel Kit locates the ethanol content sensor in the center rear of the intake manifold, the mounting bracket bolts to the intake manifold balance tube. You will need to remove the factory plastic intake manifold cover, intake manifold, and fuel rails/damper in order to install this kit.
*Note – All AN fittings are assembled dry, no sealant of any kind should be used on the threads or tapered sealing surfaces*
1. The first thing you want to do is relieve the system of pressure. There are a number of ways to do this, but typically it's easiest to just disconnect a line at the firewall. There are two fuel lines coming up on the pass side of the firewall, one is bigger than the other. ON A COOL ENGINE, put a rag over the larger line and disconnect the fitting, allowing the rag to catch the fuel that leaks out. These fittings disconnect by squeezing the release tabs on both sides at the bottom and pulling up on the line.
2. With the factory fuel rails, regulator, and fuel lines removed from factory hard lines located on the firewall, the GT1R Fuel Line Kit installs very easily. When installing the fuel rails (Part 14), the crossover tube should connect at the fronts of the rails, and the bolts should torque to 16ft.lbs. You will reuse both factory rubber grommets from the firewall mounted OEM fuel line bracket. Install these grommets on the GT1R fuel pressure regulator/bracket assembly (Part 5) and then insert both of the machined spacers (Part 6) with the large faces on the rear of the bracket. Mount assembly in stock fuel line bracket location using supplied bolts and washers (Part 7). Now thread the Redhorse ORB to AN fitting (Part 13) into the bottom of the Fore fuel pressure regulator and tighten. With the regulator assembly and V2 GT1R Fuel Rails (Part 14) installed, you may now install the line kit.
3. The 25 ¼” long line (Part 1) installs on the rear of the driver side (bank 2) fuel rail and between the factory fuel feed line, which is the larger of the two in size. One of the three Redhorse 881-08-06-2 (Part 10) fittings installs directly on the factory feed line first, put a small amount of oil on the hard line before installing, to lubricate the o-ring inside the fitting. Side A of the line installs on the back of the fuel rail, and Side B installs on the now installed Redhorse fitting.
4. The 7 ½” long line (Part 2) installs between the rear of the passenger side (bank 1) fuel rail and the drivers side of the ethanol content sensor (Part 15). You will bolt the ethanol content sensor to the mounting bracket (Part 16) using the supplied M6 nuts and bolts (Part 18). The bracket with sensor will then bolt to the intake manifold balance tube with the supplied M6 bolt and spacer (Part 19). The male quick disconnect barbs on the ethanol content sensor are 3/8", install the two remaining Redhorse 881-08-06-2 fittings (Part 10) on the ethanol content sensor. Side A of the fuel line attaches to the now installed ECA sensor, and Side B attaches to the rear of the passenger side fuel rail.
5. The 6” long line (Part 3) installs between the passenger side of the ECA sensor (Part 15) and the right side of the fuel pressure regulator (Part 5). The Redhorse fitting with fuel pressure gauge installed (Part 12) will install on the right port of the regulator before the line is installed. Side A of the fuel line attaches to the now installed gauge fitting, and Side B attaches to the passenger side of ECA sensor.
6. The 3 ¼” long line (Part 4) simply installs between the bottom of the fuel pressure regulator and the factory fuel return line on the firewall, which is the smaller of the two stock lines. The Redhorse 881-06-05-2 fitting (Part 11) installs on the factory return line first, again, lube the hard line before installing the fitting. Side A of the fuel line attaches to the now installed Redhorse fitting and Side B attaches to the bottom of the regulator.
7. The vacuum line with reducer (Part 9) will install between the vacuum port on the fuel pressure regulator (Part 5) and the factory vacuum line that previously attached to the factory fuel pressure regulator. Install the reducer into the factory line, and then run the new line to the vacuum port on the fuel pressure regulator. Finally, use the supplied zip-ties (Part 8) on each vacuum line connection.
Mounting and wiring of the display (Part 20) is left
to the end user’s discretion. Zeitronix provided instructions cover wiring
(Part 20) of the sensor and display.
For use with a COBB Accessport, COBB has provided a very detailed overview concerning the wiring diagram and tuning. Please refer to the following post:
Please contact us with any questions!