S1 Elise – ITG Air Filter and Carbon Fibre Air Box Part 2

The slightly temporary induction setup I made with the ITG carbon fibre air box and filter was doing OK but I wanted to do something a bit better so I came back to it with a fresh pair of eyes and some better access.

For the better access I needed to remove the wheel arch liner which, predictably, was not going to be a quick unbolting removal.

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I already tried and failed to undo these bolts so I went for the cutting the heads off option instead.

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With this and some water to help keep the bolt cool. I also ground off just a bit at a time to prevent melting the plastic arch or bodywork.

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Just enough ground back for the bolt to pop through.

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What I found behind the arch liner. A decent weight saving to be made by removing that pile!

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The arch liner out of the way.

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I have one of the Elise Parts cones that attaches to the inside of the side air inlet. This plastic bit needs to go, for it to fit.

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After getting all the various spare bits of hoses out again I came up with this plan.

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This way the inlet trumpet on the air box could be aimed in the direction of the side air inlet.

So what I needed was a couple of silicone bends. I ordered a 45 and a 90 degree bend.

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They needed some trimming down. This is the best way I’ve found for getting a neat cut on a silicone hose.

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Some pipe, about the right diameter, with a good flat edge placed inside the hose and a hose clamp round the outside both lined up to where you want to make the cut. Then a good sharp knife run carefully round.

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This usually results in a nice clean cut.

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To get the ITG air box and inlet trumpet where I wanted it I had to remove the original air box bracket. The problem is this also holds the fuel filter so it had to go back in some form plus I always prefer to make modifications that are reversible if at all possible. So I just removed a section of the bracket meaning it could be refitted for the fuel filter and the original air box and filter could be refitted if I or anyone else wanted to in the future.

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The inlet trumpet can now fit through the gap.

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Fairly happy with the fit though it’s all quite tight. Should be fine but I’ll keep an eye on it as I do with most things.

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Arch liner back in and wheel back on. Time for some more driving.

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