Any S/C guys seeing 9psi on the stock pulley?

[djskorch]

I am in Boise Idaho (about 2700 ft above sea level).

Stock 2.37" pulley. Freshly rebuilt nosecone with around 5000 miles on it (NSK bearings, new viton seal and supercharger oil replaced. I also cleaned all the slight gunk buildup on the rotors but they did not have the coating on them that I have read about.)

At full throttle, I am seeing right at 9psi. Just curious if anyone else is seeing this high of boost on a stock charger and pulley. I did put a no name 2.1 pulley on for a short time (couldnt get it to stop slipping above about 3500 rpm due to the static tensioner) but up to the point it was slipping, I would see 11ish psi and the truck felt AMAZING on the low end.

 

[paddlenbike]

I see 7 psi max at sealevel, as reported by the URD software at the piggyback. I'm guessing your boost gauge is inaccurate.

 

[djskorch]

I see 7 psi max at sealevel, as reported by the URD software at the piggyback. I'm guessing your boost gauge is inaccurate.

Boost gauge has been tested on 2 other vehicles and was accurate when compared to an AEM digital boost gauge along with another autometer gauge so I dont think it was the gauge.

 

[steezemcqueen]

I'm about 7psi at 5000ft with the 2.2 pulley

 

[djskorch]

Hmm, im not sure then. I doubt it would make any substantial difference but it is very cold here right now (single digits). During the summer 7ish psi is about right but I will try to post a video later today showing that I am at 9 now.

 

[djskorch]

Best pics I could get from the video I took yesterday