I took a video of what my car is doing.

View My Video

Its hard to tell but its like a violent choking at about 3500 revs when boost starts to spool.

It done this about a month ago and a fellow member suggested a boost pipe had come off, i couldn't find anything out of place and it was fine after that day.

I put it down to air in the fuel lines as it had been sitting jacked up on one side for a while.

 

But then i could freely rev it, now it struggles.

 

My friend suggested that I've got a perished actuator pipe as this happened to his skyline, but i cant even see them let alone get to them.

 

It feels electrical to me, as if its cutting ignition.

Any ideas guys, any help is much appreciated as i'm new to these engines.

Thanks

Mark

Yeah ive asked about various unplugged plugs in the bay and some of them were the o2 sensors, members said they were allowed to be out as long as its been mapped to, (which i assume it has as it ran fine) But they disappeared thats the strange thing. But its running fine now anyway. So strange.

Cheers for all your help guys

If you have an after market bumper with a large air vent and a low filter the wet will get on the fine heated wire in the MAF housing and cool it giving the same result as a Maf fail

Boost leak. Check BOV's, pipes, etc. Do a pressure test