if you want better emissions from your beast, maybe a bit more power, then you need an oil catch tank. on normal engines, the crnak case emissions are fed directly back into the engine to be burnt off. but this contaisn oil fumes, which clog up the inlet tracts and coats the pistons in oily crudd. the oily fumes in the air fuel mixture lowers the octane rating of the fuel, therefore lowering the perfromance of the engine and causign pinking.
to get aroudn this, take one 500ml coke bottle, turn it upside down. cut a small hole in the bottle at the top and thread a largish pipe into the bottle runnign from the cam cover on the engine. on the 16v engine, theres 2 pipes, run both of these to the bottle. also cut another few small holes in the top of the bottle, so the gases can escape. what the bottle does, is it collects any oil residue in the bottle, wich can be emptied out if it ever gets full. u can buy ally ones, but there about 70quid, and a bottle does the same job. if its done so it looks offical, then you can get through the mot without any hassles. or dont worry about the bottle, and vent the pipes down the back of the engine and onto the road!!!!lol
jimbo
p.s. i will show pics within the next few days of how its done