Alright everyone sorry for all the questions i keep posting just cant seem to find anything on the subject. And its stuff ive never encountered. Well this time what i have run into is my car starts and idles at about 1000 to 1100 thats not the problem. When i go to drive it or just rev past 1500 its like it hits a rev limiter and goes baw baw baw baw 3 to 5 times and then if you give it gas to get it past this is jumps straight to 3000 rpms or more. Not sure if its my primary o2 sensor or what but i need your all help. My set up is a 97 del sol with a 95 gsr with a chipped P28 ecu and obd2 harness. Everything else runns perfect except this. Ill get a video tomorrow just its 2 am and i dont want to wake up the whole neighbor hood since im running open header. My exhaust is about 4 inches shy of the header ill get that fixed tomorrow hopefully. PLEASE HELP ME!!!!!!!!!!