99 gsr fuel rail install

We are going to install an AEBS fuel rail on a 1999 Acura Integra GS-R. This particular install is on a GS-R but the information can be related to most other vehicles. Be sure to check your service manual for other information pertaining to the removal and installation of your fuel rail. Be sure to let your car cool down prior to this installation. (For more tech tips check out Deepstaged Engineering.)

Step 1

This is what your stock fuel rail looks like.

Step 2

Relieve the back pressure from your fuel system. One way to do this is to remove the gas cap. Be sure to re-attach prior to driving though.

Step 3

Disconnect the negative terminal of the battery to avoid any possible sparks.

Step 4

Check your components to be sure this is the correct fuel rail for your car.

Step 5

Other useful items to this performance part are an adjustable fuel pressure regulator (aka. FPR) and a fuel pressure gauge.

Click here for install instructions on an adjustable FPR

Step 6

Remove the retaining clip from the injectors by pulling back on the clip itself. It does not need to come all the way off, just enough to release from the injector.

Step 7

Loosen and remove the 10mm nuts holding the wiring harness to the fuel rail.

Step 8

After the injector harness' have been removed, you can move the entire harness out of the way. Be sure to remove any additional harness plugs you may have connected to it.

Step 9

Unplug the vacuum line from the stock FPR.

Step 10

Move the spring clip securing the fuel return line to the stock FPR.

Step 11

Remove the return line from the stock FPR.

Step 12

There is a support bracket connecting the fuel rail to the intake manifold.

Step 13

Loosen and remove the two 10mm bolts holding it down.

Step 14

With a 22mm wrench, loosen and remove the surge valve on the end of the stock fuel rail. We have found it easier to place the wrench on it and hit the wrench suddenly to loosen. This puts less stress on the rail and its other components.

Step 15

Remove the surge valve and the washer behind it. Be careful not to lose this washer as it will be re-used. There is one more washer after the banjo fitting that needs to be removed as well.

Step 16

Remove the banjo fitting on the end of the fuel line connected to the fuel rail.

Step 17

Loosen and remove the three 10mm nuts securing the stock fuel rail to the intake manifold.

Step 18

Carefully, yet firmly, remove the stock fuel rail.

Step 19

Be sure not to lose the spacers.

Step 20

Be sure not to lose the injector gaskets.

Step 21

Screw in the supplied end cap into the outlet side of the AEBS high flow fuel rail. This port is used if you have a remote located FPR.

Step 22

Use an alan wrench to torque the end cap down to about 14 ft-lbs. The end cap has a rubber grommet to aid in sealing so too much torque is not required.

Step 23

Install the supplied adapter piece to the inlet side of the fuel rail. Again, torque to about 14 ft-lbs

Step 24

Unless you are using a remote located FPR as described in step 21, you will need to drill out the port for the fuel return.

Step 25

Carefully place your fuel rail into a vice to hold steady.

Step 26

Carefully and VERY deliberately, drill out a hole into the fuel return port on the fuel rail.

Step 27

Be as careful as you can to keep it centered so you don't damage any threads. The threads are there in case you want to cap it off in the future or want to add another fuel port for say an additional injector or a Nitrous solenoid.

Step 28

The hole should look like this when you are done.

Step 29

Clean out any debris and/or metal shavings.

Step 30

Install your injectors into the fuel rail. If you are using the stock injectors, we recommend you have them cleaned and bench tested prior to re-installing. This customer used new RC injectors.

Step 31