Right so I've got a pretty bare 3.5 from an e32,
Can I use an idle valve from any m30, does it need to be e32 / 3.5 specific (i.e would a 635csi or m535i idle valve work)
Same goes for MAF, does it need to be e32 specific, or will any 3.5/3.4 one work, or even an m20 MAF? Does the ecu learn? Will there be restrictions if using an m20 unit?
Also, just to double check, can I use a flywheel from an e28 m535i?
I will be using m30 box and I'm planning on using an m5 clutch. (hoping someone may have a cheap supplier for these)
While I'm here..... the engine will be going into a 2.0 touring. I plan on using the m20 loom and a 179 ecu with an m30 chip.
Ive seen the odd bit of info on this, just needing to extend a few injector wires, maybe a plug or two... that sound about right?
Thanks in advance guys.
parts compatibility for swap
Moderator: martauto
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pianist
- E30 Zone Regular

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- Joined: Mon Mar 12, 2012 11:00 pm
- Location: Lancashire
I think you can use any ICV (idle valve) from any e30\34\32\28\24 BMW, as for AMF meter don't think m20 unit will do as it is smaller and I think the spring tension will be different, besides m20 unit is mounted in filter box where m30 is totaly separate unit and is mounted on rocker cover.
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pierce
- E30 Zone Newbie

- Posts: 226
- Joined: Sat May 30, 2015 11:00 pm
Cool thanks, forgot its an AFM, that makes sense.
I was kinda planning on modifying the inlet manifold and sending it over the n/s rather than keeping the standard position. If using an m30 AFM i guess it will be staying where it should be.
Cheers
I was kinda planning on modifying the inlet manifold and sending it over the n/s rather than keeping the standard position. If using an m30 AFM i guess it will be staying where it should be.
Cheers
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pierce
- E30 Zone Newbie

- Posts: 226
- Joined: Sat May 30, 2015 11:00 pm
Cool thanks, forgot its an AFM, that makes sense.
I was kinda planning on modifying the inlet manifold and sending it over the n/s rather than keeping the standard position. If using an m30 AFM i guess it will be staying where it should be.
Cheers
I was kinda planning on modifying the inlet manifold and sending it over the n/s rather than keeping the standard position. If using an m30 AFM i guess it will be staying where it should be.
Cheers
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Bristol_Jer
- E30 Zone Addict

- Posts: 2523
- Joined: Thu Sep 24, 2009 11:00 pm
- Location: Bristol, UK
You can use an e28 flywheel, as long as you use the e28 clutch with it, I have one on mine.
