The index number can be found on the head of the injector after the BMW part number. An example of this is 13538616079-11 where “11” is the index number. Injectors with index 10 and lower have a different calibration and construction than injectors with an index of 11 or higher.
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Are N54 and N63 injectors the same?
Remember that the BMW N54, N63, and S63 engine in ETK use the same fuel injector.
How much HP can N54 injectors handle?
Stock N54 Block (750-900whp) The block holds up well even at 750+whp. Problems can still happen, but it’s rare until you get above the 850-900whp mark. It costs a lot to build a proper, usable 750+whp N54.
Can N54 injectors be rebuilt?
For over thirty years, GB Remanufacturing has been rebuilding fuel injectors, and are now the first company to remanufacture BMW’s Index 12 injectors for the N54, and we are the only company to make these available to you.
What CC are N54 injectors?
N54/N55 Multi-Port Injection Kit – 750cc.
How long do N54 injectors last?
The N54 fuel injectors are warrantied for 10 year or 120,000 miles. If you are under warranty, BMW will try to only replace the fuel injector that is leaking. MAKE THEM REPLACE ALL! If you have one injector leaking, it is likely more will follow soon after.
How do I code my BMW injectors?
- Step 1: Replace the Injectors.
- Step 2: Plug the MX808 into the OBD2 Port.
- Step 3: Select “Service”
- Step 4: Select “Injector” from the service menu option list.
- Step 5: Select Vehicle Make.
- Step 6: Read the Vehicle VIN.
- Step 7: Verify Vehicle Information on the Next Table.
What is port injection N54?
Port injection runs off the low-pressure fuel pump. Many N54’s start with LPFP upgrades on stock turbos to support more power and higher E85 mixes. This often looks something like a single Walbro 450 or Walbro 525 LPFP. Single pumps usually support about 450-550whp on 100% E85 with port injection.
How much boost can a stock 335i handle?
OEM turbos can handle up to 18 psi with supporting mods, going over that is probably not going in increase any performance.
How much boost can a stock N54 handle?
Likewise, newer OEM turbos may decide to give out before 20psi. However, if you are concerned about N54 turbo longevity, somewhere in the ballpark of 17-18psi on stock inlets/outlets and 19-20psi on upgraded should be safe for most.
Is it worth upgrading injectors?
Changing fuel injectors is not a “plug-and-play” performance upgrade, such as installing a low restriction air filter. It’s something that requires knowledge about how the fuel delivery system works. In fact, upgrading fuel injectors may actually decrease the engine power if done incorrectly.
How can I tell what index My BMW injectors are?
Bank 1 (cylinder 1, 2, and 3) and Bank 2 (cylinder 4, 5, 6) has to have all of the same number index injectors. The last number in the sequence is the index number for each injector (example: your first picture 1353 7565138.02 would be index 2 since the last number is 02).
How much HP does port injection add?
Port injection is really the final fueling upgrade to push the B58 well beyond 600-700whp on heavy E85 mixtures. Proper B58 PI setups can even support up to 1,000+whp.
Can you mix different index injectors?
IMPORTANT: Injectors with index 11 and higher have a different calibration and construction than injectors with index 10 and lower. Due to this difference, the injectors with index 11 and higher and injectors with index 10 and lower cannot be mixed on the same engine bank (e.g., cylinders 1-4 or 5-8).
What do you need to run E85 N54?
The alternative option here is opting for a stage 2 or stage 3 LPFP. On your stock N54 LPFP, you can handle up to about 40% E85 blended with 60% of 93 octane pump gas. With a stage 2 or 3 LPFP, you can run 100% E85 which creates even more power and is actually cheaper!
How do I know if my N54 injectors are bad?
The spray pattern could be hitting the spark plug with a straight stream versus a mist. That too would cause fouling more noticeable at idle. Take a look at your plugs and see it one of them has black soot on it. That is the misfire or bad injector.
Why do N54 injectors fail?
The N54 injectors are notorious for having issues but the main problem that causes them to go bad is they will start to leak. But misfires arnt only caused by bad injector. Misfires are from lack of spark or fuel. So if you just had your injectors replaced i would check your plugs and coils first.
What makes N54 unreliable?
The primary issues are the fuel injectors and the high-pressure fuel pump. Both were infamous issues at the very start of production and can still chase owners to this day.
What happens if you don’t code injectors?
Non start – In newer systems if you do not code in the injectors the vehicle will not start. Poor / lumpy running – as the injectors are not coded, the ECU will carry on fuelling as if the previous injector was still present, which can cause poor performance.
Do BMW injectors need coding?
They need to be coded so the ECU knows the flow rate at what voltage of the injector. If you are lucky, you could switch it out with an injector with a similar specs (-0.1 or +0.1) and you may not need to code them.
Are N54 and N55 injectors the same?
Most are supplementing with port injection long before hitting any injector limits. N54 injectors are theorized to be able to support ~3000whp. N55 injectors should have similar capacity. They just use a different injection style but the overall dimensions and capacity of the pencil style injector itself are similar.
Do you need port injection N54?
N54 Stage 4 LPFP Upgrade Stage 4 LPFP kits are similar to stage 3, however it requires the use of port injection. The dual pump set up is the same as with the stage 3 kit.
Does the N54 have direct injection?
The N54 was produced alongside the naturally aspirated BMW N53 engine; both engines have direct injection, double-VANOS (variable valve timing), an open-deck engine block and an electric water pump.
Is N54 direct injection?
BMW’s N54 engine, introduced in the 2007 335i, was the first engine to feature direct injection and turbocharging. Looking at the current BMW line-up, all gasoline engines available in the US are now turbocharged and direct injected.
How long do stock N54 turbos last?
Turbochargers on the BMW N54, for the most part, last around 100,000 miles before they have to be rebuilt or replaced. It isn’t uncommon to hear of cars that have the original turbos still functioning as designed upward of 200,000 miles.