3Diffs · Feb 13, 2022

Hi Folks

Any one got any pics of how they fitted the MAF sensor on their EFI into Defender project?

The ones I've found online hose pipe turns 90 degrees out of the plenum towards the bulkhead, the MAF is fitted there, then 90 degrees into the filter housing.

Except I seem to have run out of room, mine has a lot more throttle bracketry in the way where the hose would run. (see pic) :-(

Any assistance gratefully received.

Def90man · Feb 13, 2022

I’m just waiting for the hoses arriving to do the same. Apparently the courier lost the first parcel so hopefully next week I’ll do this. I’m working off a build from another forum where they used a 70mm 180 degree hose, halved it, joined and turned it to clear the throttle. I’ll see if I can find a picture somewhere.

cappers · Feb 13, 2022

How I did mine, with a RRC air box and MAF on the bulkhead and convoluted tube off eBay:

3Diffs · Feb 13, 2022

Def90man said:
I’m just waiting for the hoses arriving to do the same. Apparently the courier lost the first parcel so hopefully next week I’ll do this. I’m working off a build from another forum where they used a 70mm 180 degree hose, halved it, joined and turned it to clear the throttle. I’ll see if I can find a picture somewhere.

View attachment 258945 View attachment 258946

Ooh that's really different, thanks for this.

3Diffs · Feb 13, 2022

cappers said:
How I did mine, with a RRC air box and MAF on the bulkhead and convoluted tube off eBay:
View attachment 258948

Ah that's interesting too. I thought if you changed the length of the tube to the MAF it would change the fuel 'map' as such. I presume yours runs fine so disproves that theory!

I'm beginning to think my large obstructive throttle linkage is down to the Disco doner having cruise control and I need to remove something, or more likely because that would be far more difficult, change it.

cappers · Feb 13, 2022

3Diffs said:
Ah that's interesting too. I thought if you changed the length of the tube to the MAF it would change the fuel 'map' as such. I presume yours runs fine so disproves that theory!.......

I suppose technically it might make a difference but she goes beautifully with very good low down torque - I have accidentally spun the wheels

- and it's the best 3.5 (ex Disco 1 hot-wire) I've had and pulls like my old 3.9.

I don't like the ECU and relays being in the engine bay but the loom had been hacked and was too short to place in the cabin. Could do with a new full length loom or and extension; did think about making my own but it's a lot of wires!

MattYorke · Feb 13, 2022

I went in a different direction with mine - I used a discovery bend to angle the inlet forwards and made up a length of pipe with a radiused inlet foam filter on the end. If I went wading, I suppose it'd not be quite so good as the behind engine setup you chaps posted pics of, but since my ignition system isn't waterproof, I don't think it'll matter - but the thought is that it'll get cooler air from behind the headlight area, and there's space for a decent size filter. Makes the engine bay look a little empty though.

3Diffs · Feb 13, 2022

MattYorke said:
I went in a different direction with mine - I used a discovery bend to angle the inlet forwards and made up a length of pipe with a radiused inlet foam filter on the end. If I went wading, I suppose it'd not be quite so good as the behind engine setup you chaps posted pics of, but since my ignition system isn't waterproof, I don't think it'll matter - but the thought is that it'll get cooler air from behind the headlight area, and there's space for a decent size filter. Makes the engine bay look a little empty though.

Yes my thought was to put a hose through to the air inlet on the opposite wing because these RV8's can't half pump out some heat!

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