So the belt helped out. Now the difference with everyone else could be the gauge itself. Some you an actual boost gauge, some use a Scangauge and you are using torque app and bluetooth dongle for obd. So I would say there is the problem. Plus throw in the enviroment factor.
We don't typically have those issues like a turbo, but you can check the intercooler couplers.

 

The black intake tube that feeds the supercharger and has the green oval gasket in it never should theoretically see boost pressure should it? It should be vacuum always correct? I noticed that the brakes felt like they had an issue headed home tonight as if the brake booster was bad, so I got out and checked the line going to the brake booster and if I wiggle it somewhat aggressively I can hear a small hissing indicating a vac leak on that line which leads to that black intake tube? So my theory is if that black tube is pressurized for any reason it could be a boost leak but it shouldn't have positive pressure?

Holy run on paragraph on the mobile app

 

Boost leaks common on R53 MINI's are boost leaks from the supercharger horns and the IC couplers. Make sure the IC is sitting correctly in the couplers. The Supercharger Inlet Gasket should be replcaed any time you remove the inlet pipe or supercharger this seal should be replaced as it is very common for it to leak.

 

Here is a pic

 

Yea it was replaced less then 2k miles ago with the water pump. I am going to do some more investigating I guess I just cant seem to figure out why the psi isnt matching up to other readings.

Whats the avg vacuum you are seeing at idle bram?

 

Their are lots of variables for this. Pick up or borrow a Scangauge and see what it is.
I will try to check tomorrow for you.

 

It should be around -7.6 psi, I believe

 

Regardless of condition im going to order a dt bpv, an 02 mcs with 110k is the perfect candidate for a new bypass valve id say. Im too lazy to boost leak test this week so im going to blame it on a leaky bpv until I order one or find my boost leak tester.

Lol had to give me the spec in. -psi huh

 

Ok, I will check it now. I did not want to get my *** off the couch. Thx Viper

 

I am at -7.8/7.9

 

Roughly 15-16in-hg?

 

I get 15.88

 

Haha, google is was my friend, but I feel sorta accomplished that I can make you move here

Oh and yes, a vacuum is negative psi

 

 

Decided to give it a push in second gear to redline with a more accurate gauge and im pushing 18.9 psi. That's with a 17% pulley. Chargers brand new and I adjusted to bpv to close fully. Very happy with the amount of boost!

 

 

using torque app i get 16.5-16.7 psi at wot with 17% pulley

 

Man im still falling short at 15.3-15.5 psi at wot and im only 800ft above sea level with 40 degree temps. I did notice that the pulley really heats up the air charge reaaaaaly quick!


Anybody used any of those ebay gp intercooler knockoffs? I dont have a cool half grand laying around for a legit one

 

<Yeah, mine does not get that high. It's probably because of the altitude and the temp (it's been around 0F). I tried in second and don't get higher than 5.6 psi, but my gauge starts at -3.4 psi before I start the car (ultragauge) because I'm at 6500 feet here. So I max out at about 9 psi. I'm bone stock still, can't wait to put a pulley and cai on it and maybe an exhaust to get more air flowing through then engine. >

If you look at the manifold drivers side you will see the throttle body at the bottom about 1 o clock, see the little vacuum valve next to it? Looks like a little EGR valve?
This may be bad, it is the pressure dump for the system
and can cause issues with weak boost on gen 1 s models. wire it so it is secured against the little set screw at rest. The fire it up and hold on to the steering wheel!!!!

 

thanks, I'll check it out, I put a 17% pulley on it and now get about 14 psi or so at 4500ft. So it's a lot better. Unfortunately i just got a P2096 code that I need to fix...