Using a 3 port boost controller such as the AEM solenoid - When you are at WOT, isn't the boost controller essentially creating a boost leak by diverting pressurized air out of the 3rd port on the solenoid?

Does this cause any tuning issues? Make you lose power? Anything?

 

Are you running the stock MAF or are you now on speed density?

 

It will be so small it will not even mater.

 

even at near 100% duty for the solenoid?

 

At 100%??? That will depend on how the lines are run.. But I don't think 100% is achievable. Last time I check it was 10-90% duty.. But if you care so much about it run a line from where the filter is suppose to be, and install it before the turbo and after the MAF or filter if you don't have MAF. Problem solved.

 

I was wondering about this the other day. The same thing happens with all of the MBCs that have a "Boost recovery hole" and with the greddy solenoid that I have on my 2g.

The only "issue" i was thinking could pop up would be that there is probably slight vacuum in the area you would plumb it to (the stock inlet hose location) which could make it even harder for the TruBoost or any other controller to do its job properly as you would be sucking the air in the line out rather than just removing pressure from it temporarily. I'm under the impression that it is no big deal... with the Greddy and the TruBoost you won't leak any at idle or up till your spring crack point.

If you do decide to re-plumb it please post results and weather or not your boost controller can keep up... right now at 59% duty I see enough dropoff on the TruBoost, but I'm interested to find out!

 

Re-plumbing is not going to help me unfortunately since I am not running a MAF. With my setup, lost air is lost air regardless of where it comes back through. But I suppose that as long as I am not losing pounds of air mass through the hole it should be ok... ?

 

Tabio,

I think you are confused as to how this is supposed to work... the vent port vents the pressure that was trapped in the wastegate, not the pressure coming out of the turbo. At 100%, the turbo is blowing against a completely blocked solenoid and the wastegate chamber is able to fully vent to atmosphere. At 0% the boost is blowing directly into the wastegate. So in either case, there is never a situation where the turbo is hooked to the vent causing the larger leak that you are concerned about...

 

You sir are 100% correct. I was totally thinking backwards. Thank you!