Its bc you dont have a 10.5 hotside, so you wont get boost creep, its only 05's+ Evos

 

I got boost creep too....Swap it out and its back to normal.

 

I was thinking about getting the o2 housing upgrade also but will wait it out a little longer.

 

unture , ive got a 10.5 hs and NO creep .

my psi peaks @22 and falls to 21 near redline

 

Some ppl get boost creep and some dont, i dont know what the cause is

 

I am using my XEDE to control boost. Its basically an electronic boost controller. However I did zero my boost table and found that the turbo initially run wastegate pressure and eventually creeps to 18PSI. This is not a problem unless you want to run less than 18PSI.

I am guessing that the car is more efficient than it was before. Its just hard to tell a difference because WOT was blazing quick to begin with. I would think I would notice if I lost power but its hard to say.

Anyone else have O2 dyno information?

 

I noticed this on mine as well. I will be porting this 1.5" hole out to match the "contours" of the o2 housing. I thought that this little hole was really wierd looking in the "High Flow O2" housing, and thus decided to open it up a bit. I have not installed it yet, as I have not touched the hole yet. Just waiting on the time to sit down with it and play around.

 

i have a MBC with the 10.5 hotside with no boost creep. 22psi till 7k rpm, and then drops to a little more to 21 psi.

 

Try bringing the RPM up in 4th or 5th gear. Those are the times I see boost creep (mostly happens in 5th, not so much in 4th). If I remember correctly, it starts happening at about 4000 RPM in 5th.

No issues in 1st through 3rd.

 

Can someone elaborate a little bit more about this boost creep? I thought this would be a great cheap mod but now I don't know!

 

So far I haven't really seen people complaining about boost creep.

I simply stated after the 02 housing install I was able to hold higher boost longer than before.

Boost creep shouldn't be an issue with the tubular O2 housing.

 

I get mine only in 4th for a second then the boost drops

 

Boost creep is when your wastegate is unable to keep up with the flow of excess exhaust gas and causes the turbo to spool harder and increase the boost level as RPM increases. The symptoms are your boost level in PSI (or whatever units you are using) to continue to increase as your RPMs climb. So instead of the normal spike in boost to 20-21PSI and the boost levels coming down to 16-17PSI, the boost continues to rise up as your RPMs increase to 24,25,26 ... etc PSI ....

The work around for this is to either:
1. Port and polish your wastegate/flapper (making the wastegate hole slightly larger) thus allowing it to flow more gas ...
2. Or do what Jeff did and control boost using your EMS ... MBCs are useless in this case as they are unable to control boost as a function of RPM.

But what baffles me is the fact that the wastegate flapper door is used to control boost. When shut it allows the boost to rise when open it allows the boost to lower or maintain its level depending on how much it is opened. And if you are getting boost creep in the upper RPMs your wastegate flapper at that point should be completely open trying to lower the boost levels. So turning down the boost opening the flapper door even more shouldn't solve boost creep, unless the flapper wasn't fully open in the higher RPMs do begin with. Someone correct me if I am wrong.
Thanks ...

 

I used a staight die grinder with a ball tip, the only thing that would get a nice cut, I tried a cone, and a barrel style cutter. The ball works the best.

 

That is not boost creep. That sounds like a boost spike. If your boost continued to climb and didn't stop climbing, that would sound more like boost creep.