Well pretty sure my 8 day old XDI 35 HPFP has failed...I did a pull today and I felt the car bog thankfully I was pretty much home, I parked and at idle I'm only at .35MPa rear fuel pressure I took off a little up my drive way and at 1800rpm it maxed out at .45MPa also had a P0087 code.
Loaded different tune same issue
Just got done installing the stock HPFP and everything is fine and running good
My next step I guess is trying to get ahold of XDI for warranty really sucks I was on my 6 revision and Flex was moving out! Car felt so strong
Sent from my iPhone using Tapatalk
Sorry to hear that,
I belive XDI will step in and take care of you, just watch.
Sorry to hear! Is it making a racket, or do you think it might be an electrical issue?
Quote from: Chris_Flex on April 14, 2020, 06:42:40 PM
Well pretty sure my 8 day old XDI 35 HPFP has failed...I did a pull today and I felt the car bog thankfully I was pretty much home, I parked and at idle I'm only at .35MPa rear fuel pressure I took off a little up my drive way and at 1800rpm it maxed out at .45MPa also had a P0087 code.
Loaded different tune same issue
Just got done installing the stock HPFP and everything is fine and running good
My next step I guess is trying to get ahold of XDI for warranty really sucks I was on my 6 revision and Flex was moving out! Car felt so strong
Sent from my iPhone using Tapatalk
I would guess your Fuel Pump Driver (relay) went bad. $65 part at the dealer. Easy to install. 5 minute job.
https://www.ecoboostperformanceforum.com/index.php/topic,6600.195/topicseen.html (https://www.ecoboostperformanceforum.com/index.php/topic,6600.195/topicseen.html)
FYI
Quote from: SHOdded on April 14, 2020, 10:07:25 PM
Sorry to hear! Is it making a racket, or do you think it might be an electrical issue?
It is much louder then usual
Sent from my iPhone using Tapatalk
Quote from: Macgyver on April 14, 2020, 11:39:21 PM
Quote from: Chris_Flex on April 14, 2020, 06:42:40 PM
Well pretty sure my 8 day old XDI 35 HPFP has failed...I did a pull today and I felt the car bog thankfully I was pretty much home, I parked and at idle I'm only at .35MPa rear fuel pressure I took off a little up my drive way and at 1800rpm it maxed out at .45MPa also had a P0087 code.
Loaded different tune same issue
Just got done installing the stock HPFP and everything is fine and running good
My next step I guess is trying to get ahold of XDI for warranty really sucks I was on my 6 revision and Flex was moving out! Car felt so strong
Sent from my iPhone using Tapatalk
I would guess your Fuel Pump Driver (relay) went bad. $65 part at the dealer. Easy to install. 5 minute job.
I installed the stock hpfp and everything was back to normal
Sent from my iPhone using Tapatalk
I believe this is the first failure that I have seen with a XDI pump. However I am only limited in my 3.5 EB scope being regulated to just the MKS and the SHO.
Well that sucks... and I hope that's an anomaly, since I received mine at the same time, I'm hoping it's not a manufacturing issue with the new design.
Someone will have a major issue that doesn't regularly monitor their data
Been in contact with XDI all morning sending datalogs and photos of the pump itself now just waiting on what to do next....
Sent from my iPhone using Tapatalk
Uwe at XDI told me to try and compress the spring on the pump by putting it on the table and putting all your weight on the pump to try and get the spring to move and it didn't, he said it's hard to get it to move but it should move slightly.
Since it did not move at all it's likely the piston has seized in the pump.
I'm gonna ship it back today hopefully for a fast turn around
Sent from my iPhone using Tapatalk
Just curious, but is this the new designed pump or the old?
Quote from: limited02 on April 16, 2020, 09:09:20 AM
Just curious, but is this the new designed pump or the old?
New
Sent from my iPhone using Tapatalk
Any news from XDI?
Quote from: SuperPete on April 16, 2020, 09:55:40 AM
Any news from XDI?
Been waiting since last night for a email back about returning it
Check out my previous post
Sent from my iPhone using Tapatalk
Ahh, got it, he will take care of you, you'll get back on "pumping" in no time :)
I love my XDI pump and E40 tune...
Have you check the E85 for ethanol reading lately?
Quote from: SuperPete on April 16, 2020, 10:15:14 AM
Ahh, got it, he will take care of you, you'll get back on "pumping" in no time :)
I love my XDI pump and E40 tune...
Have you check the E85 for ethanol reading lately?
No I plan on doing that soon I usually always do in the spring
Sent from my iPhone using Tapatalk
Quote from: Chris_Flex on April 14, 2020, 06:42:40 PM
Well pretty sure my 8 day old XDI 35 HPFP has failed...I did a pull today and I felt the car bog thankfully I was pretty much home, I parked and at idle I'm only at .35MPa rear fuel pressure I took off a little up my drive way and at 1800rpm it maxed out at .45MPa also had a P0087 code.
I've had a similar issue however it was temp related. Below 37~38'degrees the desired output was at this lower .37Mpa range. Once the temp read higher all things were back to normal.
I was told it was a corrupt file. Different Tuner, but received an updated file. This was at the beginning of winter (Michigan), just ran the stock pump and lower tune.
Quote from: Chris_Flex on April 16, 2020, 10:17:26 AM
Quote from: SuperPete on April 16, 2020, 10:15:14 AM
Ahh, got it, he will take care of you, you'll get back on "pumping" in no time :)
I love my XDI pump and E40 tune...
Have you check the E85 for ethanol reading lately?
No I plan on doing that soon I usually always do in the spring
Sent from my iPhone using Tapatalk
Sheetz in Reading was 80-85 tested maybe 10 days ago.
Sweet, thank you
Xdi just informed me the piston in the pump has seized, and can not see the root cause.
Uwe at XDI is taking care of me and sending a new pump

Sent from my iPhone using Tapatalk
Any negative effects on the cam lobe or tappet ?
Quote from: 6500rpm on April 21, 2020, 04:41:00 PM
Any negative effects on the cam lobe or tappet ?
Don't think so been driving the car everyday with the stock hpfp seems fine
Sent from my iPhone using Tapatalk
Quote from: Chris_Flex on April 21, 2020, 01:50:37 PM
Xdi just informed me the piston in the pump has seized, and can not see the root cause.
Uwe at XDI is taking care of me and sending a new pump
Sent from my iPhone using Tapatalk
Thats awesome. Well sort of.
New pump delivered today and got it installed!(https://uploads.tapatalk-cdn.com/20200424/ffb58b7294e23a990630380298cea0ff.jpg)
Sent from my iPhone using Tapatalk
Awesome Awesome! Good luck.