Hello,

Recently, I'm running into trouble with the 3 port issue. Well my car was tuned at 25 psi peak and tapper to 22 psi with 3 port. Now, the car does low boost at 14.5 psi from start and spike at 21 psi while connecting to the 3 port. So we switch the new 3 port to see if that solve the problem; however, the car acts the same. Then they switch to MBC, magically it works. The car boosts at 25 tapper to 22psi. They told me that the problem can be from my ECU or the wire harness that cause problem. Would you please tell me what do you think the problem is? I want to see the other opinion about it.

I also test the power output for the plug that connect to the 3 port, it shows that plug does have power.


Thanks

 

anyone?

 

sounds like you are hooking up the ports wrong on the 3 port or you are knocking and cutting boost as a safeguard

 

Update:

Today i found out that the connector that plug to the port has no ground. Is there a way that I can trace where this wire get short at?

Thanks