I have read many posts/ instructions regarding the profec B setup... Most say to tap ONLY into the wastegate actuator and this is what I have done for the past 2.5 years. However, I have never been happy with the performance (low power in low gears and very sensitive to weather changes/ boost creep). Yesterday, I did what many say you should never do and tapped both the PCA and wastegate actuator to the profec via a T fitting and the difference is amazing. Boost on both turbos is quick, predictable and dead nuts in every gear - it's awesome. I expected a pretty harsh transition (t-ing the PCA presumably eliminates the prespool), but even that isn't too bad. How could this be bad?

 

what is pca

 

precontrol actuator

 

Nobody have an opinion on this?

 

OK... here's a diagram of the install (at least my interpretation). Hope this helps.

 

could it be harmfull to the turbos?

 

That's exactly what I am trying to find out... but i can't see why it would be catastrophic. It is so much better I think I would stick with it even if it shortens the life of my turbos.

 

I have the Apexi AVCR and can tell you this is the way it is supposed to be on my unit. I read some where that tis would be something to try on the Profec-B, just that no one has tried it till now. Looks like it works well (as it was thought it might) Jack

 

I have the Apexi AVCR and can tell you this is the way it is supposed to be on my unit. I read some where that tis would be something to try on the Profec-B, just that no one has tried it till now. Looks like it works well (as it was thought it might) Jack

 

Sorry for the double post.

 

12lbs at 2,500
11lbs at transition (around 4,500)
12lbs to redline

1st thru 4th gears