Took the car to subaru the other day to get the ecu reset, as it was boosting low and slowly after 0.5 bar and peaking at 1 bar which is low for a wr1, they checked it for any cell codes and it came up with mass air flow reading low, i checked it myself the other day by disconnecting the maf while the engine was running, to check if it would stall and it did, so i was wondering if i actually gave the fault that was recorded? or would that not make a difference? thought id ask before i order a new maf .


Cheers

 

Yes, that would cause an error code.

sounds like either a turbo on its way out or an air leak, could also be the boost control solenoid

 

Hope its not the turbo its only done 15,000 miles, and i've checked for air leaks or cracked/split pipes around the turbo, just cant find whats causing it!!


the turbo seems to spool up fine up to 0.5 bar and hold, then just make 1bar near red line Anyone else had a similar problem with any advice??