i had a similar problem. turned out a missing exhaust wheel on my secondary turbo was gone.

 

i don't want to go single yet, my supra is going to go single. well is single 67DDB, just dropped more then i even want to think about..

probably 4x the car value this summer alone.

AEM
2jz
ITS 67DDB
Equal length mani
Tial 44 MM
960CC/Rail
New paint
HKS hypermax's
New rack
new body trim for the paint (all mouldings) Fing expensive
new leather from leatherseats.com
new intercooler
new IC pipes
4" exhaust
yada yada yada, the list keeps going and my wallet keeps getting more mothes.

 

if it kicks like crazy, then it might be set to TTC, true twin conversion... my friend did that to his supra and it felt like a snail at low end, but when boost built up, kicked. but its a long proecss to do, its not somethign you can accidentally do, so might not be that... hope you get it fixed, and update us on whut it is.

 

it was already fixed long ago read up!

was just a loost boost vac line.