https://zzperformance.com/ecotec/adj...or-cobalt.html

Anyone think this would be worth giving a try? It's not obvious to me that this is a more common issue than I was aware of. According to their description this sounds like it may give me just enough to prevent high rpm drag.

 

Those are both name brands I would trust.

 

Worth a shot IMO.

 

I think so too. They can be installed by only having to remove the fuse box correct? Not a bad piece to have even if it doesn't correct my issue.

 

I believe thats all you have to do.

 

If I was running a performance clutch setup I would want adjustability. Nice option....

 

Well the adjustable master cylinder seems to have done the trick. However now I noticed that my boost will drop off with higher rpms especially in second gear. I shift into third and sometimes it will boost fully and keep on boosting then other times it will boost up and then drop 5 psi or so suddenly and stay down there. I am thinking I am getting belt slip as I don't know what else could cause boost issues intermittently and the way the boost drops it looks like it is fine until it starts to slip and then it continues to slip. I disconnected my boost bypass solenoid and that is not what is doing it. Right now I have the ZZP adjustable tensioner on it's least tight setting combined with stock LSJ belt, phenolic spacer, supercharger 1/2" spacer, a 2.9" pulley and an ATI overdrive. Going to try and go one setting up on the adjustable tensioner. It seemed too tight when i first installed it to go up at all but maybe the belt has broken in a bit or maybe I was just being a puss.

 

Could be slip. Everything is sealed? No leaks from the supercharger to intake manifold?

 

I double checked with some carb spray and couldn't get a reaction anywhere. The problem is definitely more rpm related than it is pressure related. Like I was saying high load lower rpm produces good boost/power

 

Make sure it isn't your bypass dropping boost

 

I disconnected the solenoid completely, plugged off the solenoid side and left the actuator side open to atmosphere. Actuator is closed in its at rest state. Only thing that can open it is vacuum signal from partially closed throttle body or something restricting the intake.