so i picked up a d16y7 from a homie cuz im bout to make a big move in nov from diego to dallas and my current y7 is too old.his is in pretty top notch condition compared to mines so he hooked it up.i swapped it 5 hours,took out my ac cuz it just pissed me off then bolted my y8 auto manifold on it.plain and simple swap everything went to the old connections.so then i thought i was ready to roll out the shop and go on with my day but fvck my car is idling really wierd as soon as i turned it on.i turn it on then it went to 3k.let it run for a couple minutes then it starts to rev from 1k to 2k.it bounces off 1k then back to 2k then repeats itself the whoooleee time.took it for a drive anddd the sammeeee thing!what the hell is going on?did i plug something wrong?it bounces off 1k then back to 2k then over and over and over same ****.does anyone have any ideas onto what the hell is going on with my car?maybe wrong plugs?maybe bad iacv?when i had the y8 intake manifold on my old y7 it was fine.please help im driving to vegas on wednesday for a week and this is my dd

 

sounds like you have a vacuum leak. try unplugging the iacv while engine is running, idle should drop to 500-600

 

bumpity bump help help

 

soo have you tried that?

 

tried that and the motor starts choking and sounds even weirder

 

does the idle drop? how much?

 

1.5k and it stays there.is it ok to run the car without the iacv plugged?

 

you have a vacuum leak