yeah it just seems it sucks in air hence why it goes to 2000 rpm HOWEVER i may have solved it - i will test later today once ive done the thread on my cylinder head which i effed up myself - chasin an oil leak - ,,,,as my mate says - I am my own worst enemy especially with cars ...

Thanks for the replies...

Oh - almost everything is new - Injectors about 6 months old maybe a year max

Running larger maf to obtain desired boost and fueling , ratios etc ( not my forte ) spec is Area six 420 hp zetec -Forged rods , pistons , arp conrod bolts, gas flowed/ported head , i think but def ported, uprated valves and springs , uprated area six inlet cam and a wee little original slightly uprated turbo at 24 psi, FMIC , DW Fuel pump , Sachs clutch, Clutch plate / Flywheel lightened and balanced.. 420 bhp on Sabres rollers...

All other vacuum hoses are tight and secure - did the carb cleaner spray thang and no idle change -- BUT AS ABOVE I am hoping will be ok today-- as i think i may have found the problem which cured it straight away - but i have had this before - and then after 2-3 starts goes back to 2000 rpm ....well what i did was check the main earth from battery to bulkhead / chassis whatever you call it and sometimes we move it due to FMIC and moving battery etc...well that was just on paint lol ...i need to check all my other earths,,,,but was idling perfect....will test later fingers crosssed....sorry for shit grammar - style of post , if it hurts yours eyes looool

Ive tried about 6 different idle valves - done the cleaning thing, tried a new After market one that cost about £70 german make...