s3 issues help

[s3ben19]

hi there bought my s3 about a month ago,
and i have been have what i think are boost issues,
i cant find any splits on any pipes,
i have tried 3 different air mass sensors,

if you are drivin normally it feels fine, but then when you boot it intially takes off but then feels to jus go flat until i ease off then feather the throttle ,

any one have any ideas?

many thanks ben

 

[Dane]

I had something like this the other day but its gone now, have you had it scanned for faultcodes?

 

[s3dave]

Have you looked at the turbo to charge pipe? if there is greasy oil on the orange pipe? they can work loose

 

[s3ben19]

yeah i had it scanned a few times and it keeps comin up with air mass sensor, and summit to do with bank 2 summit or other can't rember fully ,
yeah i have cleaned that pipe,
its doing my head in now i really am stuck ?

 

[s3dave]

bank 2 is usually something to do with lambda sensor

 

[s3ben19]

its all good i've fixed it ,
now got a healthy 250 bhp,
the fuel presssure regulator pipe had come off,

 

[beachbuggy]

have you checked the fuel pressure regulator piping?

 

[beachbuggy]

Ahh see you beat me too it!! Oh well glad you found the answer.

 

[s3ben19]

thanks for your help cheers