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Retune after the new Turbosmart Wastegate & B/O Valve


Legendary Member
28 August 2000
Peoria, Arizona, USA
The mic on the phone camera got a little static, but it really sounds amazingly smooth.
Retune after the new Turbosmart Wastegate & B/O Valve.

558 RWHP, 435 ft pds Torque
<iframe src="//player.vimeo.com/video/82355976" width="500" height="281" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> <p><a href="http://vimeo.com/82355976">Current Dyno 12-19-13</a> from <a href="http://vimeo.com/user17278490">Jim Cozzolino</a> on <a href="https://vimeo.com">Vimeo</a>.</p>
I had a really old Tial 40mm wastegate. (at least 8 years old)
Switched to the Turbosmart Pro-Gate 50 and a larger down pipe.

The Tial was too small and was having boost creep problems.
Was having a lot of boost control issues with the old set up.
It was all or none...
I'm having boost creep problems too. I have the 40 m tail with the apx kit and a pt 6266. Should I try the 50 mm and larger down pipe? My boost creeps from 9 lbs to 10 sometimes 11.
I was tuned at 14 lbs before and I would go as high as 19. Making it very inconsistent and tough to control on track exiting off the corners.
It solved my problem, now I'm holding steady at a max of 14 lbs and my boost controller actually works like it should.

I am not as knowledgeable as many others here about FI, but as it was explained to me is that the problem with a wastegate and dump tube being to small it's not able to dump enough of the excess pressure fast enough and causes the boost creep and over boosting.
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