ok soo ive been haveing an idle problem really for as long as i have had the motor... i took it up to z feaver and they just said try prying the fuel rail back on.. and well that fixed it for a while... anyways it seems like when i begin to give it gas it bogs down a bit then picks up.. could that be a sighn of a bad injector?? or an injector going bad?? and also i went out drifting and sometimes my car does not bost right like i ran 10 psi and was messing with my friend in a stock ka hatch and i barely BAREly pulled on him... but then sometimes it will boost and my rear end will be all over the fucking place and ill chirp all the way till thrid and shit on people... my car runs really werid sometimes its all really hard to exlpain but if i can get some answers on where to start that would be sick ive chcked things like sparkplugs and cleaned my air filter but idk if its my injectors or faulty maf or i heard it could be my turbo i hear a bad turbo can effect your idle as well...??

 

Sounds like you have a bad knock sensor. If you've got a knock sensor code, it'll pull timing. Then the car won't get out of it's own way.

Check the codes.

 

yeah its werid like the ilde will surge high then low then it will drop super low and the whole car will start to shake...then when you give it gas it revs but it kinda bogs when you give it gas then it goes.... and its not like this all the time but i went out drifting the other day and i had absoltely no power like id go and hit about 60 in 2nd gear and start by drift by ebakeing and then when id be into the turn to give it gas the power would not be there...soo i had to start kinda clutch dumping it after i ebraked into the drift i would just rev it up and drump it and it would have the power and it would be consistant but also like i said up top i was running 10psi and could barely pull on a stock ka and sometimes i get horriable lagg but idk its a hard thing to explain but its getting aggervating ive tried everything i knew to fix it!!!