gotta massive problem wi my stage 1 sapphire (2wd) when cold its fine once warm it just dies and instantly goes again i loose rev counter everything but its back as quick as it goes.... changed phase sensor and crank sensor is fine..... any1 else had this problem??????? been told it could be a relay under the dash and ive also heard 1 going beserk now and again first problem in 15000 miles grrrr help please lol