Hi mates,

My Polo pd100 seems to have a boost leak at 2600rpm. As far as I can see, it's starting with the n75. Any idea what is causing this?

It is a pd100 with a vb turbo.

See images for the log

MAF spec vs actual
http://imgur.com/pu2uvvR

MAP spec vs actual
http://imgur.com/sIQ3z7t

N75
http://imgur.com/QtCnQK5

http://imgur.com/a/58hUy

Not to say its boost leak, you dont have original turbo on the car, so need to adjust N75 until MAP actual and requested are close enough, very straight forward

NRT wrote:Not to say its boost leak, you dont have original turbo on the car, so need to adjust N75 until MAP actual and requested are close enough, very straight forward

Ok.Thnx. After a few adjustments to the N75 and TL there seems to be a small improvement. Unfortunately the dip still occurs in the midrange. I will change the N75 actuator to make sure it's not a mechanical issue.