Definitely wet mate!

Dry is supposedly for normally aspirated cars only - but to be honest, i always ran wet for those!

So much more reliable...

The kit itself isn't really the issue - it's who sets it up!

Make sure you get it set up on a rolling road with a wideband lambda sensor!

There is some talk of certain american kits not being legal in the uk... so it might be worth looking into that when buying