M35 stagea boost issue

[Kyleja]

Hi all!

Im pretty new to the page. Buy i have come into a bit of a dilemma with my 02 m35 stagea and I'm hoping you guys can point me in the right direction.. sorry for the big parrlagraph lol

 

Now the other day i started experiencing when i put my fooy down not necessarily full through but if i boost to full bar its fine but after that its almost in a limp mode and doesn't wsnt to go full boost it loses power. The car sounds fine the spool sounds somewhat normal (just not going past full bar, almost like it limits itself) 

Im trying to explain it the best i can to give you guys the clearest picture.

When I shut the car off abd turb it on again its fine untill i hit close full or hit full boost at times its struggles to get there almost like a fuel cut/surge or like its missing. I don't get jolted into the winscreen or anythingbut its just there enough to notice it. Full lack of power almost like your  foot is 75% down on the peddle boost should be at about the same and climbing engine and exhaust sounds as it should but boost spool sort if stops mid way and power the same. Any ideas guys?

I had my AFM sebsor done  about 2 months ago so surly can't be that and I wouldn't expect it to be that with these symptoms. 

Car has an upgraded intercooler BOV and a car delete. Other then that its stock..

I have read somewhere that again it could be a number if things.. AFM, turbo seal or gasket leak, could be the turbo solinoid reading wrong, could be crank angle sensor or plain and simply cooler pipes or other boost lines being frail or have a split somewhere. 

If anyone has any ideas please let me know as most places where i live are typical mechanics and charge an arm n a leg to do checks and to get parts and theybarr hard ti trust..

Feel free to ask me an questions or if i can be any more specific to help resolve this would be really appreciated..

[GTSBoy]

Most likely an ignition problem. Missing on one or more cylinders causes power output to go down.

[kowalatea]

Have you checked your voltage from the alternator? Is so and its adequate, when is the last time you replaced the fuel filter