[N55SFH]

Stumped on an issue with my N55, will be long so bear with me.
Currently FBO with a hybrid turbo and Turbosmart BOV, tuned on MHD stage 2+ Hybrid.
Took it out a few days ago and it felt great, spooled a bit slow but felt as it should otherwise, then took it out a day after that and it was limp as anything, no boost at all and felt slower than my 325d, also noticed a blow off valve error (in photos).
Cleared the BOV code and took it out again this morning, felt great again and as fast as it should be (stupidly didn’t graph a log), then took it out again shortly after and graphed a log which is below, no boost at all and a very low boost target.
Read codes again at home, BOV code hadn’t come back, but the blow off was noticeably quieter.
I’m very confused about the inconsistency on power and boost for seemingly no reason, any ideas?
Ignore the CAN error codes, yet another issue that’s come out of nowhere lol

[whyzee125]

Post logs in datazap, they'll provide much more info than a screenshot.

Generally, codes even when they appear random or conflicting, do in fact point to the issue if you know how to read them. You very likely do have a BOV issue. The ambient temp sensor should be addressed too, as while that's not your issue here, the car uses it to make calibrations for the engine and not just to read out.

What is MHD 2+ hybrid? Is this an OTS tune made for a hybrid turbo or a custom map? What turbo are you running?

[N55SFH]

https://datazap.me/u/n55sfh/low-boos...=0&data=2-4-15

Thanks for getting back to me.
Regarding the BOV, it audibly lets off pressure as it should and if it were a mechanical issue I’d imagine it would be less inconsistent.
The ambient temp sensor code is a result of my gauge cluster going, I have a new one on the way.
Yeh, the stage 2+ hybrid is a new mhd ots map, but it’s in beta so not sure how much I trust it.
The turbo is a Boost Addicts hybrid, similar in design to a PS2
Hope that data log illuminates things.
Cheers