lol, no thats not what I was meaning.

I was explaining that boost creep was causing me to exceed the threshold that I felt comfortable with pump gas. So instead of running a 50/50 mix of pump/race I am choosing to use meth so I don't have to worry about the creeping issues.

 

Intersting point I never though about it that way. Just like a safty factor.

 

I was going to ask you the very question that you just answered. See my wastegate position is different than your manifold but still comes off the collector. Im expecting to see creep issues JUST like you do since I also have a 30R. The only difference in our setups really is I have a F20 and you have a F22. I was seeing 9-10psi @ 6500rpm at PART THROTTLE with the open downpipe. I really hope it doesnt creep much more than that or Ill have to mix in 110octane every tank ( which I will do lol ).

 

You and me both brother

 

haha my boost creep actually goes the other way! I hit max boost of around 18 psi and by the end of third It creeps down to 13 psi, which is the actual mechanical spring pressure. Guess I need a bigger spring.

 

Like previously stated a good ecu controlled electornic solenoid is a good way to somewhat fix this. You can't keep it from creeping up to the higher boost in high rpms, but you can get it to hit that boost earlier so you will have a much better powerband rather than having boost slowly creep to redline.

 

See the head gasket threads.
i dont know why youd ever go as low as 7 psi. No need.
12-15 is fine. i doubt youd have much creep if you just ran the car on wastegate at 12. trying to control it down to 7 will never work.

 

Spec Opps when you fitted your car with a 44WG did you port it out?

 

I agree him. Spec, you need a larger wastegate. You have a big turbo that's trying to move a whole lot of air. A manual boost controller will not solve the problem. Your wastegate, at 38mm, is unable to blow off the amount of air your turbo is pushing.

I have had this issue in my FD RX-7...exact same problem. On the street I wanted to run a low boost setup. My wastegate was undersized so I got a manual boost controller thinking it would stabilize my boost. Negative. I popped my motor in the winter and upgraded my boost controller with the rebuilt motor.

Spec, you can sell that wastegate for 75% of what a larger one will cost you.

 

Yep, you're right. So, another way to stabilize the boost is installing your stock cat. Forgot to mention that. But yeah, an external wastegate is the way to go...good luck!!!

Keep boostin'!...well, not 'til you get this resolved...hehe