Just after some advice, if anyone can help..

My evo 5 has been parked in garage for 6 months and driven once a month at most. i am thinking something may have fautige in the engine.

have since got a new warrent of fitness and now all of a sudden it has a strange idol to the point where it stalls and misses when you try to rev engine. alot of smoke comes from engine ( white ) but i was thinking this could be from the injector cleaner i put into fuel. if i take on open road and drive hard it goes well as per normal.

sounds similar to a subaru at idol a realy noticaeble miss or something

This is very hard to diagnose any help would be greatly appreciated.