How long does HPFP last N54?
Fortunately, BMW realized that, and warrantied it for 10 years or 120,000 miles. If you own a higher mileage N54, it is likely that you have had your HPFP replaced at one point in time.
What should fuel pressure be N54?
In the JB4 world, 1500psi or above is preferred. (10 or higher on JB4 log). I like to see mine at that range or above that though I do get in the 1300 range on initial tip in on E80 but then it recovers nicely. In the JB4 world, 1500psi or above is preferred.
Why does N54 HPFP fail?
Causes of HPFP Failure in Your BMW The use of poor-quality oil: The use of oil in your vehicle other than the manufacturer recommended oil, may increase the wear on your high-pressure fuel pump thus resulting in failure.
Are N54 internals forged?
No N54 or N55 has forged internals, lul. The only thing forged on the N54 is the crank, period.
Why does n54 HPFP fail?
What causes low fuel pressure in BMW?
Typical causes for low fuel pressure include a dirty fuel filter, weak pump, incorrect tank venting, restricted fuel lines, a clogged pump inlet strainer and faulty electrical control.
What is the range of the HPFP on the N54?
LPFP’s are the first limitation on the N54’s stock system. Often, a LPFP upgrade alone will support low-mid 500whp range with roughly E40 or E50 fueling. However, that’s highly dependent upon the health and function of your HPFP and injectors.
How much does it cost to upgrade a N54 shotgun?
N54 VTT HPFP Upgrade – Shotgun Double Barrel Kit Price: $2,098+ This kit is similar to the previous option from Vargas Turbo Tech, but adds a second HPFP. Your OEM pump stays in it’s same location and the second pump is added in and driven by the belt (as with the single barrel kit).
What’s the best HPFP upgrade for me?
Anyways, HPFP upgrades are a promising option for those who don’t want to add a second fuel rail utilizing port injection. The two primary options are HPFP overdrive kits or adding a second HPFP. 1. N54 VTT HPFP Upgrade – Shotgun Single Barrel Kit
What fuel pump for a N54?
The stage 2 LPFP kit from Fuel-It runs a Walbro 450 pump that provides up to 100% more flow than stock. There’s also the option to upgrade to the Walbro 525 pump. Both are E85 compatible and these are likely the most cost effective fuel pumps for N54’s targeting under 600whp.