Screamers?

[Ricco_04]

As you are suffering boost creep then a boost controller will not help you. Your problem is the wastegate not being big enough to expel excess boost due your free flowing exhaust, whichever you want to tackle.

An exhaust restrictor is very easy to do.

[Grizzly]

As you are suffering boost creep then a boost controller will not help you. Your problem is the wastegate not being big enough to expel excess boost due your free flowing exhaust, whichever you want to tackle.

An exhaust restrictor is very easy to do.

You would think not, but I have had this problem and fitted a Profet B that reduced the problem to the point it was usable. From what i\'m told it prempts the Target boost and opens the wastegate early so effectivly the target boost is Lowered so it Spikes to the Level you want.

I can not coment on other makes or Models as i\'ve only had experiance with the B2.

Yes an Exhaust Restrictor would do the job but some of the restrictors i\'ve seen to do this job have a hole in about 1 1/2" so it would be better to refit the cat??

I would be Checking the Pill is fitted in the wastegate pipe too.

[Ricco_04]

That is interesting about the controller (now my brain hurts :Laugh )

Yeah, I would agree that the restrictor ring is a temporary measure so if no further mods required and airpump is staying then may as well lob the cat back on or maybe even a sport\'s cat?

[John_Hudson]

i just made a post about wastegate porting, should help with boost creep

http://www.mazdarotaryclub.com/forums/showthread.php?t=39764

[Carl]

I have not come across a setup yet on the twins that I have not been able to get control of the boost.
It sometimes starts off with boost creep,but with alot of perseverance it should be possible to control boost creep on twins in either setup,ie sequential or non sequential,on an Apexi ECU.
All this should be able to happen without any porting of wastegates and open exhaust\'s.

Regards
Carl