you will not make much more power above 1.5bar at redline.

You're probably right, but I think the cams are holding it back at the top end.

use one of a st205 celica or mr2 kit and little radiator.

When you've squeezed the 1.8T into the Elise engine bay there isn't much room left for anything else, all of the chargecooler parts have to be custom made.
 
I'm sure with a little thought you could easily use the above kits,there is not much room in mr2 engine bay either,pace used to do a kit but i think rogue have a better kit now,give them a shout i bet it wouldn't be much more expensive than a decent air to air intercooler.

Cams may help it's a bit hit and miss,you may gain 20/30 bhp but i wouldn't have a clue what actually works well in a 1.8t,i think it's a bit of a missed area in 1.8t tuning.
 
I'm sure with a little thought you could easily use the above kits,there is not much room in mr2 engine bay either,pace used to do a kit but i think rogue have a better kit now,give them a shout i bet it wouldn't be much more expensive than a decent air to air intercooler.

Cams may help it's a bit hit and miss,you may gain 20/30 bhp but i wouldn't have a clue what actually works well in a 1.8t,i think it's a bit of a missed area in 1.8t tuning.

Yeah, thanks for that, they may fit. I had a couple of MR2 turbo's so I know things are tight for space.

I've done a few cars with chargecoolers, this being one of them:

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sounds good mate,very fast and very light elise that one! You could always go for the roof mounted air to air rs200 stylee.
 
pro alloy have a Elise with bit more power they have made an charge cooler for it im sure they can do one for you if you ask them