fatherpain
Senior Member
- First Name
- Tom
- Joined
- Dec 22, 2018
- Threads
- 27
- Messages
- 2,205
- Reaction score
- 3,799
- Location
- SoCal
- Website
- www.civicx.com
- Vehicle(s)
- 2018 CTR - CW, 1996 Honda Accord EX coupe
- Build Thread
- Link
- Vehicle Showcase
- 1
- Thread starter
- #946
Was stuck at home this week due to a variety of annoying ailments. Part of getting old, I guess. ?
What better way to pass the time than to finally tackle the XDI HPFP (high pressure fuel pump) and high pressure fuel line mod that I’ve put off for (10) months.
Here is the location of the OEM HPFP to be replaced.
The XDI doesn’t come with installation instructions for the FK8.
But found these videos and links helpful, taken together. However disregard the method of removing the HP fuel line doing the reach around or from underneath. Tried that first and learned pulling the intake manifold is the way to go.
YouTube video 1
YouTube video 2
YouTube video 3
Ford F-150 installation instructions
Mike, XDI’s technical support representative was super helpful clarifying some things not covered above.
Purchased the XDI HPFP to address an issue with fuel cutting off under WOT when tuned to 366 HP. Salasko Racing adjusted the tune down to compensate, but I want the full powa!
The info available didn’t seem totally complete, so figured there would be some unmentioned headaches involved figuring it out (and there were)
Strongly recommend skipping the reach around method mentioned in one of the videos to access the HP fuel line. I tried and got all the way to retightening and found it was virtually impossible and wasted hours. Removal of the intake manifold is definitely the way to go.
With this in mind, here’s a step by step DIY install. Will be posting tons of pictures, so please bear with me.
This will ultimately cover:
- XDI HPFP
- Removal of the intake manifold
- Modification of the HP fuel line
With the car raised, removed various plastic clips and bolts to release the plastic underneath to put eyeballs on the dreaded HP fuel line fitting that needs undoing to pull and drill the HP fuel line. It’s also nice to do, to make it easier to recover dropped bolts or tools and check the HP fuel fitting for leaks when it’s time to test.
And there it is! Was hoping to be able to reach it from underneath to avoid pulling the intake manifold. No dice. The fitting is way up there and there isn’t enough space to turn a wrench, even if it were within reach.
Last edited: