Facelift injectors in a pre facelift car? M20B20

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flashBE
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Wed Jul 31, 2013 11:41 am

Hi guys

Is it possible to use facelift injectors in a pre facelift engine?

I bought a '84 320i which has been running on LPG for a long time. Now it runs like *** on petrol. I've already drained the old petrol and put fresh one in it with injection cleaner and installed a new petrol filter.

I want to go to the MOT and I don't want to wait till the cleaner kicks in (or doesn't). I still have 6 good facelift injectors lying around so I was wondering if they would work.

Thanks
Grrrmachine
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Wed Jul 31, 2013 12:39 pm

1) No, there's a difference in the impedance of the injectors. Fitting the wrong ones could potentially fry the ECU

2) Injector cleaner in the tank will do the square root of f**k-all to the state of your injectors. Remove them and send them to Injectortune if you want them cleaned.
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Brianmoooore
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Wed Jul 31, 2013 2:02 pm

Obvious solution is to keep it running on LPG. The engine will thank you for it, and you should be able to pass a cat. spec emissions test in the MOT, just just the older one it has to meet.
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flashBE
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Wed Jul 31, 2013 6:58 pm

Grrrmachine wrote:1) No, there's a difference in the impedance of the injectors. Fitting the wrong ones could potentially fry the ECU

2) Injector cleaner in the tank will do the square root of f**k-all to the state of your injectors. Remove them and send them to Injectortune if you want them cleaned.
1) Thanks, but I checked RealOEM in the meantime and the injectors should be the same for a '84 320i and for a '88 320i. Not if one of them has a cat, then there different.

2) It seems like that yes. It's not worth it to me to send them of, theres an M50 waiting to go into the car. I just need to pass the MOT with this engine and drive it for a couple of weeks maybe.
Brianmoooore wrote:Obvious solution is to keep it running on LPG. The engine will thank you for it, and you should be able to pass a cat. spec emissions test in the MOT, just just the older one it has to meet.
No can do. I live in Belgium and I want to get it registered as an oldtimer which means only 1 MOT check and that's it. Never again until it switches owner. But with LPG, you have to get it checked annualy. I don't want that because I'm going M50 soon and engine swaps are not allowed here :?
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