So,basically the only solution is to put my stock cat or HFC back on. Drill the wastegate diaphram to solve this problem.

 

thats the only solution so far. except if you port out the waste gate then i believe u can run the test pipe. you would have to ask someone who has done it before

 

You Erics friend? But like I told him. The greddy kit is know for boost creep with a test pipe. How high is the boost creeping to?

 

He said spike, which is different than creep.

 

Ported wastgate on t518z i dident stop there as it was off the car i hybrided it into a t620z.
What this means is the max power you can get with this kit at 13 to 14psi is now my minium power at wastgate pressure 7psi.

I still havent got my immobiliser or ecu or wtf it is fixed that is causing no spark on the motor.The dyno shows 310whp 200 tq but ownly reving to 8000 instead of 9000rpm 7psi .
Its been a month now 2 honda techs have looked at it .

 

I finally got the turbo wastegate ported this past weekend. Installed in back the same day. Took it out for a few runs to see if it would spike. No spiking at all. If anyone needs a local shop to help you port the wastegate. The shop name is JER development located in Westminister, Ca. Ask for LINH and mention that you saw this ad on the forum.