my boost gauge is moving rapidly within about 3psi when doing a pull at WOT. I understand i need to do a boost leak test which i will do tommorow.

my question is..

Can anything else cause a boost flutter??? (i.e. wastegate) my boost is ecu controled

 

Mine does the same thing at high boost but stays rock solid at 20psi. I've done boost leak tests and they are solid to 28psi. I too am using ECU based boost control with the GM3PORT. Car runs great just the boost gauge that acts retarded.

 

interesting. thanks. any other inputs

 

is it posible if i upgrade to the jdm map and gm boost control solenoid that it may solve an issue?

 

MBC FTW! My boost gauge holds solid at 23 lbs. all the way to redline

 

wastegate can cause it but that doesnt mean its bad also if you messed with anything or replaced any of the stock lines

 

only line that was replace wat the one going to the wastegate with the boost pill which has been in there for a while. i will do a boost leak test this weekend and report back