Stuttery boost on n reg aero

[mrchimps]

I fitted a blled valve to the wastegate pipe last night & the car was running like a beast at 1 turn open, same goes for this morning.

Lunch time i took the car out & the hose connecting to the additional boost gauge blew off. So i reconnected it and since then the car has been stuttering under hard accelation (when it gets just into the red on the saab dash boost), i have turned the valve down, it is happening lass, but still happening?

Any ideas?

[ant9000turbo]

I reckon that the first place to start would be the DI cassette. As you have 'tweeked' the boost this could be finding a weakness in the DI that under normal circumstances is not there...

Unfortunatly the only real way I know of to test this is to try a known good one..

HTH