GT pumps 20g

[croket]

Ive got the gt pumps td05 20g on my vr4,supporting mods is 2.5 inch piping 3 inch decated exhaust,70mm throttle body aspec manifold 560cc injectors 272 bc cams
gt pumps cast exhaust manifold too,eprom and osterich for ecu management,and the usual forged internals . Now the issue is ive set boost with a turbosmart tee
at 1.4 bar which it hits around 3000rpm then as i rev past 3500 rpm my boost drops to 1.2-1.1 bar what could be the cause of this ??? i would like to hold 1.4 bar solid but not keen on having it peak hard then drop back to 1.4 when ive had it this way it peaked at 1.87 bar

 

[4piknup]

Bleed valves are poo. Get a ebc

 

[croket]

i have the avcr but messed up the settings on it trying to teach myself ive got to get it set back up again. Just curious as to why it peaks and drops i sort of expected it to boost creep

 

[evo-gsr]

Get rid of the tee. That wont hold the boost stable at all. As Jack said..get an ebc happening.

 

[croket]

best i get my mate to set the avcr up again im not to good with that side of things but im learning slowly