[wtobiason]

I've been trying to troubleshoot a issue I'm having but I'm lost and don't want to throw a HPFP at it just guessing.

A little background, it's a 2011 335i with a N55 engine. Manufactured 04/2010 with JB4, E85 harness and PPK flash. I've never put any E85 in it tho.

I'm getting 5-6 second start times in the morning and 3-5 starts with warm weather or warm engine starts. I'm also getting hesitation/sputtering at WOT around 4K rpm. This is with JB4 map 0, 1, or 5.

I would greatly appreciate any help or feedback.

Thank you in advance.

[335dlci]

Faults?

[weehe126]

Tired HPFP.

[wtobiason]

The only faults I have are from the tuner and burger tuning says those are standard with the JB4.

[weehe126]

I had long cranks for 8 months, no codes. Finally got a HPFP code one day. Replaced it and no longer have long cranks.

[wtobiason]

I've been at war with BMWNA. I emailed the CEO, exec of customer relations, and exec of customer experience. They were no help and pretty much got a f^<k you. They don't want to extend my HPFP warranty.

[weehe126]

Yes that's pretty well known. N55s didn't get the extended warranty even though it's the same part. Just get the $400 one from ECS and diy.

[bcaz808]

Originally Posted by weehe126

Yes that's pretty well known. N55s didn't get the extended warranty even though it's the same part. Just get the $400 one from ECS and diy.

Buy it from FCP Euro and you'll never have to buy one again. Lifetime warranty ftw.

[Ozzie335i]

No mention of mileage. Have the coils ever been changed? If not and over 50 K on them, and the plugs have over 10 K, change them all, then see what happens.

[weehe126]

Originally Posted by bcaz808

Buy it from FCP Euro and you'll never have to buy one again. Lifetime warranty ftw.

Very true, I always forget about that.

[dleccord]

Originally Posted by weehe126

Yes that's pretty well known. N55s didn't get the extended warranty even though it's the same part. Just get the $400 one from ECS and diy.

how difficult is it to change the HPFP compared the spark plugs?

Originally Posted by weehe126

Very true, I always forget about that.

there has to be a catch. i don't believe BMW parts can be warrantied for life, like how certain duralast parts are sold as lifetime form autozone, etc.

[weehe126]

Originally Posted by dleccord

how difficult is it to change the HPFP compared the spark plugs?



there has to be a catch. i don't believe BMW parts can be warrantied for life, like how certain duralast parts are sold as lifetime form autozone, etc.

It's harder than spark plugs, but easier than a valve cover gasket. Will take 1-2 hours. There are several DIYs around. FCP Euro guarantees life time warranty for everything, including consumable/wear items. Just take a look at the site.

[bcaz808]

Originally Posted by dleccord

how difficult is it to change the HPFP compared the spark plugs?



there has to be a catch. i don't believe BMW parts can be warrantied for life, like how certain duralast parts are sold as lifetime form autozone, etc.

There's no catch. Go to their website as weehe said.

[wtobiason]

Turned out to be the fuel pump. My shop checked the cylinders for leaky injectors and changed the plugs. All in all $850 for a fuel pump, spark plugs and diagnostic.

[xxMike61]

Hi i have a feeling that my hpfp is on its way out although it could be something else. When just cruising, i get this very slight hiccup i guess. Like I am holding a constant RPM but it feels like the car either speeds up or slows down just a tad bit. Could be throttle too i guess?

Thanks