Wadesta

Hi All,

I was hoping to bounce some ideas around regarding some mad boost issues I have at the moment. 

Basically, at the moment, I am getting a maximum of 0.8bar of boost on the primary, and a maximum of 0.4bar on the secondary. I have run through a tonne of checks to try and find where the issue could be. The highlight of it all was when I completely disconnected the waste gate line off of the primary turbo. I was able to achieve a maximum of 1bar on the primary and 0.5 on the secondary.

I can't find any boost leaks, and I have checked both turbos for acceptable shaft play and free spin. Both are fine. I have blocked off the secondary bypass valve and main by pass valve. Neither of these made a difference. I have also done the UEC through the BBOD trick with no change (didn't expect it to). Done all of the VAC lines as well as the ECV adjustment (however, I will do it again as this is the only thing I can put my finger on at the moment). I have also recently replaced the intake manifold gaskets.

I am at a bit of a loss and I am hoping that there are a few peeps here that can throw a couple of ideas out there that I might trigger something in my big beautiful brain that would solve this issue. In the spirit of full disclosure, I do currently have a open circuit on my front O2, however, I would have still expected to see a decent boost spike when I disconnected the primary's waste gate.

Cheers guys!

Wade