dont know if this question has been asked before, but i cant seem to get full boost in 2nd gear. only goes up to ~.37 kg/cm2 (5.2 psi)before i hear the wastegate open completely and the car stops pulling. i have a 6lb spring but my dsbc is set to ~7.5 psi. 3rd gear is fine tho, goes all the way to 7.5 psi. this never happened before i got my bigger dp and 3" exhaust.

another strange thing that happens in 2nd (along with the symptoms described above) is that my tach just shakes and drops 2-3k even tho i'm on the gas.

hmm strange, hope someone can shed some light on this.

 

are you using the HKS racing BOV? Make sure all the line to the BOV are secure....make sure you aren't running lean....

 

well the problem got worst, couldnt boost past ~4 psi in any gear. wg just opens completely (and its louder than usual) and car stops pulling. car even shuts off sometimes. its not my ic pipes, bov, plugs, etc. i even took the wg apart to see if the green spring is ok. everything checked out fine.

so i was stumped and decided to unhook the vac lines to my blitz dsbc and run just on the wg (6 psi). well lo and behold everything ran fine, boost went up to ~6.1 psi and every gear boostin ok. greddy boost gauge showed ~.47 kg/cm2 but the peak boost display on my dsbc only showed .37

i dont know whats up w/ my dsbc. btw what size vac lines you guys use? i use 4 mm, too small?

 

well i found the prob. the vac read line running to the dsbc control module was crimped. such a small stupid prob causing me headaches
i only found it cuz i was uninstalling the dsbc. everything is fine now.

thanks to those who im/emailed me.