Origional Injectors - Highest Mileage

[IK6SPEED]

Originally Posted by RAFiK - BMWClubUAE

Yes, the LCI models received upgraded HPFP and Injectors. they basically can stand a stage 2 tune easily.

Ok, this is where I am confused.

The original EU5 Injectors (876) obviously could not be replaced with the original EU6 Injectors (956) as shown below.

Yet, realoem reports the newer LCI EU6 Injectors (842) can be used instead of the previous EU5 Injectors.

Is this a mistake on realoem as most have stated EU6 Injectors cannot be used to replace EU5 Injectors?

[RAFiK - BMWClubUAE]

Originally Posted by IK6SPEED

Ok, this is where I am confused.

The original EU5 Injectors (876) obviously could not be replaced with the original EU6 Injectors (956) as shown below.

Yet, realoem reports the newer LCI EU6 Injectors (842) can be used instead of the previous EU5 Injectors.

Is this a mistake on realoem as most have stated EU6 Injectors cannot be used to replace EU5 Injectors?

Where does it indicate that EU5 cannot be replaced by EU6?

I have friends who replaced their Injectors/HPFP to the newer versions.

[IK6SPEED]

Originally Posted by RAFiK - BMWClubUAE

Where does it indicate that EU5 cannot be replaced by EU6?

I have friends who replaced their Injectors/HPFP to the newer versions.

A number of tune shops as well as many posts on Bimmerpost have stated that EU6 injectors will not work in EU5 vehicles.

With so much contradiction in the info, this is why this is so frustrating as one does not want to purchase injectors, install them, only to find out they would not work properly.

[RAFiK - BMWClubUAE]

Originally Posted by IK6SPEED

A number of tune shops as well as many posts on Bimmerpost have stated that EU6 injectors will not work in EU5 vehicles.

With so much contradiction in the info, this is why this is so frustrating as one does not want to purchase injectors, install them, only to find out they would not work properly.

I'll investigate this and get back to you. it certainly is an interesting topic

[IK6SPEED]

Originally Posted by RAFiK - BMWClubUAE

I'll investigate this and get back to you. it certainly is an interesting topic

Thank you.

I would note, if the EU6 were compatible, why would the 2014-2017 EU6 NOT be compatible

Also other BMW Models EU5 and EU6 show they are all not compatible.

So this single injector stands out which seems to make one wonder if it is a mistake? And with the M5 Injector issues, it seems this would be important to know.

So again, thank you for Investigating.

[IK6SPEED]

Originally Posted by RAFiK - BMWClubUAE

I'll investigate this and get back to you. it certainly is an interesting topic

Did they replace the older EU6 to the newer EU6 Injectors.....or the older EU5 to the newer EU6 injectors

[RAFiK - BMWClubUAE]

Originally Posted by IK6SPEED

Did they replace the older EU6 to the newer EU6 Injectors.....or the older EU5 to the newer EU6 injectors

AFAIK, they replaced the EU5 to EU6. My contact is on leave and once he's back I'll make sure I'll bring this topic to his attention.

[M5Rick]

Add Red Ex once every 4 tankfuls in the correct quantity to keep those injectors sweet.

[Jasoneo5]

Originally Posted by IK6SPEED

Any update/clarification on this?

I have heard all the injectors need to be changed to move to a newer revision

[IK6SPEED]

Originally Posted by Jasoneo5

I have heard all the injectors need to be changed to move to a newer revision

I feel confident that any change injectors models would require all being changed. That's not an issue.

The question remains, can 2013 vehicles with EU5 injectors use the newer EU6 Injectors as realoem seems to indicate on the 4/05 post above

[IK6SPEED]

Originally Posted by RAFiK - BMWClubUAE

AFAIK, they replaced the EU5 to EU6. My contact is on leave and once he's back I'll make sure I'll bring this topic to his attention.

Bueller?

[RAFiK - BMWClubUAE]

Originally Posted by IK6SPEED

Bueller?

Still investigating

[M5BMW]

?

[IK6SPEED]

Originally Posted by RAFiK - BMWClubUAE

Still investigating

And?

[badass335]

did we ever confirm if EU5 injectors could be replaced with EU6 without issues?

[M5Rick]

Originally Posted by badass335

did we ever confirm if EU5 injectors could be replaced with EU6 without issues?

Unless someone confirms or claims then I wouldn't and use the eu5 ones.
Someone used the 6's in a replacement engine in NYC and the engine lunched.

[badass335]

I was having misfires so had coils and plugs replaced. Still happened so got a quite from dealer... $570CAD each. Called bmw parts and was told that if I replaced ALL 6, I could go EU6 or EU5. Got a smoking deal for EU6 so got and had BMW install them. Car is having mixture lean codes and rough idle when starting. New MAF and they JUST replaced the valve cover as they suspected a leak... car is still coding lean. After reading around I'm wondering if the parts guy was wrong and I should have stuck with EU5 injectors.

[M5Rick]

Yes 2013 model uses eu5 injectors, that's what I would stick with.So called lci models had the eu6.

[technician117]

You need to stay with the EU5 if that's what the car had in it originally. Your symptoms are exactly the reason why.

Circling back to the original intention of this post, I replaced all 8 injectors (2013 car, EU5 injectors) at 70k miles and as preventative maintenance. After removal and inspection, there were no obvious signs of leaking. I also replaced the MAF's at the same time so I can't say with certainty which parts were getting tired, but the car's driveability improved after the work.

[Blaxwil]

How would you know which injector to use? Is this a situation where the mechanic would remove the old injectors first just to double check the part number?

[M5Rick]

Originally Posted by technician117

You need to stay with the EU5 if that's what the car had in it originally. Your symptoms are exactly the reason why.

Circling back to the original intention of this post, I replaced all 8 injectors (2013 car, EU5 injectors) at 70k miles and as preventative maintenance. After removal and inspection, there were no obvious signs of leaking. I also replaced the MAF's at the same time so I can't say with certainty which parts were getting tired, but the car's driveability improved after the work.

That's a good sign that the old injectors appeared leak free on your '13 and dispels the rumour further that EU5 injectors are prone to failure more than the 6's.

[M5Rick]

Originally Posted by Blaxwil

How would you know which injector to use? Is this a situation where the mechanic would remove the old injectors first just to double check the part number?

I would say that would be imperative to check the part number on the ones being replaced keeping in mind that part numbers can be 'upgraded' for exactly the same part.