I'm having problems with my MY00 impreza with 3" downpipe and 3" all the way to backbox .. and its got a pipercross filter...

well the problem is recently I've been noticing it doesnt go over 0.5bar unless I turn it off wait a minute then turn it back on then it boosts at around 1bar

this only happens sometimes...

what could the problem be? as I'm not that good at turbos

 

sounds like it is going into limp mode. Do you get a CEL on the dash?

 

Hmm... prolly fuel. but that is strange that the ecu reset is like a minute.
How often has it been doing this?
When did it start and what changes have u made?
HTH,
S

 

no CEL light... just started recently didnt change anything , and I just turn off the car and start it up again and voila all is fixed.. temporarily tough.. can happen just minutes later.. or not until the next day

 

had similiar problem it happens if u are in high gear low ish revs and try acclerarate if u are chasing it up gears then it is fine ur car is probably overboostin causing limp mode to come on then when u turn off wait minute it can be back to normal but can sometimes take while to reset had same problem was told it was over boost an new ecu or a remapp should sort it out

 

over boost? its just boosting about 1 bar normally.. my blitz turbotimer has a peak value of the boost.. and its not showing overboost

 

wonder why this could be happening