[Senorski]

Hi,

Would like some advise please, just purchased a bmw 335d e92 2011 m sport. After the purchase we took it down the road noticed after 2500rpm the second turbo wasn’t kicking in and almost went to limp mode you could say, long story short called the guy he said it happened once before and to just reconnect the airflow sensor which we did and it was fixed.

Move forward 3 weeks later same problem has happened however reconnecting the air flow sensor hasn’t fixed it, pulls fine until 2500k then second turbo just doesn’t kick in… tried bringing it to local garage and they aren’t any use. Just replaced air flow sensor, didn’t fix it.

I noticed when I’m driving along and it’s not working and I turn the car off and on quickly the second turbo will boost will kick in and then maybe 5 mins or so later it won’t switch to the second turbo again? Seems like short circuit or something ? Do I need to change the boost actuator maybe I saw that on another post? Maybe pressure converter is not working to switch from small turbo to big? I’m not very car literate and just going off other posts I’ve read!

what it could be please?

Car has had the following mods/ replacements recently;


Modifications:
Stage 2 Engine Remap @M17 Performance Back In February Running a Safe 375bhp / 735nm
XHP Stage 3 Gearbox Map (with transferable license/map pack)
Darkside Developments Swirlflap Delete Kit
Darkside Developments EGR/EGR Cooler Delete Kit
MTC 3” Down-pipe (DPF/Cat delete)
MTC Intercooler to Turbo Silicone Hose Kit
Tinted Sunstrip Fitted
Rear Black Spoiler Lip

Maintenance:
All Vacuum Hoses Replaced with New Silicone Vacuum Hoses
New turbo to air box intake gasket
New Mahle Thermostat Fitted
New Mahle Track Rod Ends
New Mahle Track Rods
New Genuine BMW Rear Camber Arm Adjustment Bolts, Washers & Nuts
New Genuine BMW Rear Toe Adjustment Bolts, Washer & Nuts
Full Hunter 4-Wheel Alignment

Thanks.

[ctuna]

South Coast of what?
There is a motor subforum here.
not many have diesels in the US.
https://www.e90post.com/forums/forumdisplay.php?f=378

bmw boards and links
https://www.bimmerfest.com/forums/forumdisplay.php?f=99
https://www.e90post.com/forums/forumdisplay.php?f=27
https://www.e90post.com/forums/forumdisplay.php?f=2
https://www.e90post.com/forums/forumdisplay.php?f=122
https://www.e90post.com/forums/forumdisplay.php?f=368
https://www.e90post.com/forums/forumdisplay.php?f=16
https://bimmerretrofit.com/store/
https://www.e90post.com/forums/forumdisplay.php?f=378