v7 sti boost issue noob

[Pappu1]

 bams_STI said:

So i got the car back from the mechanics. Unfortunately no fix. They tried a new boost solenoid which apparently didn\'t fix the issue so they didnt replace it. They sealed up some leaks. It runs a little better but have noticed the boost fluctuates. However still boosts to about 1.2 in 1st and 2nd and drops to just below 1bar. 3rd it jumps to 1.5 and then decreases and 5th and 6th it stays solid on 1.5 but doesnt feel like thats what its actually pulling.

Any ideas? I have reset the ECU which didnt have any effect. Thinking I will replace the MAF as that seems to fix alot of other peoples issues. Or just take it to a subaru specialist as it seems to be a bit of a mystery according to the mechanic. However they weren\'t specialised in Subarus or anything.

Cheers, Ben

1.5 bar in 6th should pull

what area u in?

[bams_STI]

Yeah gave the MAF a clean and it ran alot smoother on to boost but didnt help long term unfortunately. I live in Howick. Have booked it in to subtech for them to have a look at

[Pappu1]

 bams_STI said:

Yeah gave the MAF a clean and it ran alot smoother on to boost but didnt help long term unfortunately. I live in Howick. Have booked it in to subtech for them to have a look at

didnt u go to the mechanics already?

does it constantly have low boost on 3ed/4th gears?

is it always repeatable? (reguardless of time of day or driving conditions - to a point)

i have seen that in a remapped ecu where the boost map was not done right

and i think thy had a tap or something and the guy sold the car and put back to stock and had uneven boost

- just a theory

[Kiwi_Fozze]

Replace maf with a known good\'un and test. Free and easy. I\'m home from 4, pm me

[bams_STI]

Yeah i took it to a mates mechanic shop who looked at it but couldnt offer any insight unfortunately. Looks like its running sweet! They checked and cleaned the MAF again cause it was pretty dirty and put it into their computer. Has been running factory boost the whole time which is good to know. They said the boost gauge is most likely faulty as it wasnt showing any fluctuations in boost. Thanks for eveyones help.