chk out my problem(solved)on page 6,under engine prob..
mine did the same thing,startrd and ran great 'till warm,
then died.
ecu was problem-it uses a different bit on warm up but
the normal running chip was fried.
test by dis connecting the temp sensor -the one under the
distributor(it is there!)on back of engine.it will have a block
connector with 2 wires out the block pulls away from the brass
bolt sensor.
start engine-from cold,engine warning lamp will be on(sensor
disconnected)but if it gets warm and still runs fine after about
10 mins it's the ecu.you can run it like this but don't push it
as it's running on a rich (cold start mix...)