Is it possible to run 11-12lb's of boost on a 10lb pulley. I ran that today but now it's back to 91/2 to 10. Could it be cuz of the weather temp. I've never ran that much of boost with the 10lb on.

 

Did you get this at the very top of your rpm's? Right at a shift? Have you raised your shift rpms in the programming recently?

 

its was right at the top of my rpm's between 5700 and 6k. no my shift points r still the way allen tuned it.

 

I could see the boost rising if the exhaust was getting clogged or something of that nature but you said the next day it was back to normal. How many runs did you see the 12psi? Was it just a fluke or it happened several times?

Just trying to get more info so when others read this they can give better answers.