Mr.Gs_GTE

Next up is the vacuuming. The picture below shows the map with "a damper"? The map hose goes to a three way fitting, The two legs include the map and the idk what to call it but a check valve? Anyways they both connects to the legs and the other leg goes to my AEM boost sensor. Correct me if I'm wrong. The hose with the zip tie to the right goes straight below/ between the manifold and connects to a metal port that goes to the pressure tank. I'll show that pic next.

Mr.Gs_GTE

Yea according to the instructions I got with it, you can let it open to the atmosphere or back to the intake:/.

Mr.Gs_GTE

Fuel pressure here: the vacuum source is coming from the port at the back of the TB.
Again correct me if I'm wrong.

Mr.Gs_GTE

The line with the zip tie that goes to the pressure tank.

Mr.Gs_GTE

The throttle body: intake manifoled two vacuum ports. The smaller one close to the TB is going down to a metal vacuum line that connects to the pressure tank too, the bigger used to goes straight to my P.S pressure sensors ( one of the legs) I Teed off that line for my BOV.

Mr.Gs_GTE

Lastly, at the back of the DP, I connected those two. So where did I go wrong. Engine runs smooth at idle, no vac leak.

Ali SC3

iTrader: (10)

its fine to run the open port on the boost controller to the intake, doesn't look like the problem.
Im not sure what you have looped in the last picture, did you loop the idle air control valve pipe into something else and the big question is what was that something else? maybe a better pic on that one.

the "check valve" for the map sensor is actually a filter for the map sensor, so its normally filter > map sensor. was that Tee always there and make sure the fittings there are tight, because if your boost gauge is teed onto the map sensor like and its not reading boost, your map sensor is probably not reading boost either.

also has the car ever run right with the 660 injectors in boost? or did you just do the single conversion and all this stuff recently and now have the issues.

Mr.Gs_GTE

When you say Iac valve pipe/ are you talking to the big one that runs across the back of the engine from the iac to the stock twins assembly? I got rid of that completely. I have a breather hooked up to that part of the iac/ where the pipe used to connect.

I believe the t was there because I front remember adding anything new to that area. But I didn't pay a close attention to how it was connected before I took them apart. But that T was apart of that assemble. It was the stock Fpr vacuum port, the map and the filter.

No I did the 650 upgrade when I did the single conversion and that's when I started having the problem. Now thinking about it I think I should have done the upgrades one by one:/. If you look in this picture at the Iac motor I have a breather on it.