Today i was driving and boosted my car and it tapered to 16psi and my manual boost controller is set at 21psi. A couple days ago when i had race gas in my car it held 24psi to redline. Can someone help me out. It is pissing me off why my car is doing this.
Mods to help you out.
272in264ex
3"tbe no cat
Injen intake w/ up pipe
ss pro one exhaust manifold
dynoflash
255fp
hallman boost controllerw/ in car

Today the weather is about 10 degrees warmer than yesterday.
Thanks for the help everyone

 

I would say a boost leak, thats the only thing that comes to mind. Have you ever done a boost leak test. I didnt think I had any leaks until I did a test and found 3..

 

Just check the vacume lines under the hood and make sure all of your connections are tight. ie clamps and zip ties on vacume lines..