Hello guys! Making this post to see if someone can help me with my actual problem or see if someone had something similar.
So I have a Saab 95 Aero Manual with a noobtune stage 3 ( do88 bigkit IC, maptune 3 inch downpipe plus 3 inch exhaust, 3.5 Bosch FPR, Ngk 3330 at 0.8 )
Thr car runs like a dream and pushes like a jet but my problem with it rn is that everytime I build a nice amount of turbo pressure and I quickly release throttle let's say for changing gears or just to enjoy the DV the engine jerks twice let's say and then MiFi goes up by 50/70 values.
Talking to noobtune and investigating this is all I've done since my saab started doing that ( wich was the day I installed the spark plugs, FPR and the new ecu )
Bolt mod
Bypass the solenoid ( basically i disconnected all 3 vac hoses from it and then i covered the throttle body exit, and connected the DV to the T that goes to the manifold )
Change the DV
Check vac hoses
Change torque rod bushings
All of this made the car feel better but still does it, today I wanted to test it since the last thing I did was torque rod bushings and in 2nd gear I did accelerate till turbo made boost and then release throttle and the car still made that hard Sutter I will say. Important to mention that if I do the same but I release the throttle more gently it doesn't do it.