Next, I was told to check the MAP sensor to see why the boost wasn't showing on the dash. I replaced the hose and checked for vacuum and there was. I tested the switch by connecting the b to the c on the plug with a paper clip and the boost shot up to max. So my next plan is to change the MAP and see if that fixes the problem. On my car there is a BOV and was told it might be affecting the vacuum which in turn could be affecting the boost gauge. I've disconnected the vacuum lines attaching the BOV to what looks like a device connected to the fuel rail on the right of the fuel pressure gauge in my 2nd pic and instead of the BOV making it a 3-way connection I excluded the BOV and capped where the BOV connected to the air intake just behind the MAF. To keep it looking clean I kept the hose that connects them on and now the car seems to idle much better but still no boost on the gauge. (Pic #2 &3)
I also noticed the wastegate was adjusted all the way to about 1" and I had read it needed to be 1/8". So I set it to 1/8". Could that play a part in all my troubles? How do you test the trap in the wastegate to make sure it's opening and closing?
Finally, I was told that the ignition module could b the problem, that it needs to be a stock AC delco which is black as the aftermarket brands are grey. I looked at mine and it appears to be black however the base has a grey look. (Pic #4)
Can anyone help me with these questions?
-What is that plug and why does the RPM now work after disconnecting it?
-Why is my boost gauge still not working on the Tach?
-Should I remove the BOV?
-Do I have the right ignition module?
-How do I check the wastegate to make sure it's working properly?
I'd appreciate any help you all can give. This has been a real challenge.