Electronic Boost Controller Issues
 

So this is my situation. I have been running a 4 port Mac solenoid ebc plug and play since day one I was boosted. Running 3 maps. 7psi, 11psi and 15psi. Map one holds steady and true. Map two tops at 13psi. Map three I haven't ran as my clutch was slipping on map two so I don't know where it hits. I ran the 4 port as follows:

IN port - To compressor
EX port - Vented
A port - Top of wastegate
B port - Bottom of wastegate


I was instructed to use a 3 port ebc vs. the 4 port I have been using. Mind you the 4 port is fine and has no issues aside from 2psi over on map two and known overage on map three. I purchased a Dynosty ebc. It's a Mac solenoid plug and play. Here is my results:

1st hookup
Port 1 - To compressor housing w/tee to wastegate bottom port
Port 2 - Top port on wastegate
Port 3 - Vented
Result - 7psi on every map

2nd hookup
Port 1 - To compressor housing
Port 2 - Bottom of wastegate
Port 3 - Vented
Result - 7psi on every map

3rd hookup
Port 1 - To bottom of wastegate
Port 2 - To compressor housing
Port 3 - Vented
Result - I hit 15 psi+ keeps climbing so I let off every map

4th hookup
Port 1 - Vented
Port 2 - To bottom of wastegate
Port 3 - to compressor housing
Result - 7psi on every map

So I am at a loss on how to run the lines. Can anyone shed some light??? Makes me want to install the 4 port and live with the 2psi over........

I suggest you read this blog, every page. Each boost solenoid will have a diagram of how to connect it. There are two ways to properly connect a 3 port with an external wastegate.

http://blog.perrinperformance.com/bo...ems-explained/