Single turbo Installed, Boost drops

Mobeus

New Member
Mar 11, 2018
1
0
0
Ride
08 335i
Hello folks,
First poster here. I need some help after installing single turbo.
I am unable to reach and maintain target boost. I have checked and quadruple checked for leaks with no success. i performed a leak down test with no leaks present.
I have attached logs on map 6 and map 3. In both maps i get close to target and then it drops and holds steady.
No saftey map indicators come on the JB4 monitor. Also no codes.

Mods include,
Single Turbo
JB4 G5 Iso + MHD BEF
Tial BOV and Wastegate
PR 7" Intercooler
3" Catless DP's

Map 3 target 20 PSI
Map 6 target 16 @ 5000 rpm

Your help is appreciated.

Thanks

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[email protected]

Sergeant
Platinum Vendor
Jan 23, 2017
460
371
25
Seems like it's generally working but spring is just very light. Try raising FF to 100 on map3 to evaluate if boost continues to go up.
Attached Images
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