scooby4me

sorry also understand from people that boost should be 0.9

ok will try and answer-air fuel mix normal and doesn't drop off or do anything silly-boost starts at 1800rpm then increases 0.48 at 5100rpm then drops to 0.35 until 6000rpm and then stays straight until 7000rpm

ok update on flat spot- boost is only 0.5 and have been told should be 0.9 rolling road showed no other faults so what are you thoughts??? I have been told it is one of 2 things or possibly both, so lets see what you guys suggest!!!! ps.boost solenoid has been changed

silly question but what does coil pack do?

boost solenoid was changed for another one (but not new) and a boost dial fitted for a day to see if and drop off of boost and plugs were changed on service (fault was there before service) What is strange is when new airflow switch fitted fault went for about 6 weeks !!!! some one has mentioned about injectors but doesn't make any sense why fault goes when battery disconnected and then like clockwork returns in same revs

ok this is a update on flat spot- a new ecu was found and fitted for a very good price as I was warned it could be ALOT of money, but surprise surprise falt is back what else can I try as my patience and bank account cannot last forever

just to update you guys I did disconnect battery (and press brake to clear memory) and for the last 5 days no problems but on way home tonight flat spot has returned so am I looking at getting a secondhand ecu

Thanks for reply no mods to car can i reset ecu by diconnecting battery as i wanted to see if flat spot clears and were could i get it dyno tested

can any one help have a flat spot on my 52reg wrx at between 5k and 6k have tried changing airflow,o2 sensor and boost sensor nothing shows on ecu as a fault and garage are running out of ideas and are telling me I may have to change ecu serviced/cambelt change done but flat spot still haunts me any ideas guys???