[fortythirtyfive]

Recently installed the b58tu hpfp to run the MHD stage 2 hpfp tune.. performance is noticeably better, however my log is showing a peak of 22psi on the stock turbo



Am I right in thinking this is just how the "brapp" overrun feature works? Surely it's not making a full 22 psi under load.. it appears to be at the end of gear 4 when I let off for a moment so that's what makes me question it.

Other than that I'm now seeing a peak of 656nm torque and 18.6psi during 5th gear pulls.

[AmuroRay]

Originally Posted by fortythirtyfive

Recently installed the b58tu hpfp to run the MHD stage 2 hpfp tune.. performance is noticeably better, however my log is showing a peak of 22psi on the stock turbo



Am I right in thinking this is just how the "brapp" overrun feature works? Surely it's not making a full 22 psi under load.. it appears to be at the end of gear 4 when I let off for a moment so that's what makes me question it.

Other than that I'm now seeing a peak of 656nm torque and 18.6psi during 5th gear pulls.

Can you post a full log?

[fortythirtyfive]

Originally Posted by AmuroRay

Can you post a full log?

Yeah my bad

https://datazap.me/u/producerlawson/...og=0&data=4-20

Not exactly a traditional 4 to 5th as I let off and then continued a bit through 5th. We've got icy roads and 2c ambient temps so it was very slippy haha

[PLEB]

Hey,

Have you changed the DV valve?
Maybe the DV is just to slow to respond, so the pressure builds briefly before being vented.

Should be fine ig?