Boxster 2002 jerking on 1st gear
 

own a 2002 Boxster ( base model ) but the car jerks on 1st gear when i accelerate up to 10 mph and i stop pressing the the accelerator and press it again it jerks it also jerks when shifting from 1st to 2nd gear i change the Mass air flow sensor nothing happen I also clean the throttle body I don't know if i need to replace it when it jerks the engine light lights up and the codes are P2270 ( Ho2S ) sensor but i don't know if it could be that HELP PLEASE !!!!

P2270 indicates an overly lean condition on one bank, it sounds like you have a vacuum leak, which could also be your drivability problem....

what are my are my options in this situation ?

Find the intake system leak and fix it. A smoke test would probably be the quickest way to find it.