right guys,,,,im getting there really slowly,,,engine rebuilt,,,and is now all up and running really nice,,,,
heres the problem...
car will accelerate as long as i dont use boost (by keeping an eye on the gauge and only squeezing the gas pedal lightly),,,,if i try to boost in any way.. the gar as soon as the gauge reaches like 1psi,,,,start to misfire and kangarooo,,,,and sometimes backfires down the exaust,,,
i know from my tiny bit of info there aint much you guys can do,,,,,but just a few ideas,,,,that i can check out will help,,,,
could it be any of the following,,,,AIR LEAK,,ANY OF THE SOLENOIDS POSSIBLY BROKE,,,,something i piped up wrong??
just ideas guys...cheers

 

Mine did that yesterday and it turned out to be my map sensor vacume line came off.

 

Any CEL's? Sounds like limp mode...

 

Plugs or wrong manifold absolute pressure (meaning disconnected map sensor or similar).

 

mine kinda did that. it was an vac. line on the air intake.

 

ok guys,,,,plenty for me to go on,,,,many thanks,,,,ill let you know how i get on,,,,ill check all vac lines,,,,MAP sensor and ECU codes,,cheers

 

Check the fuel pressure regulator vacuum line.