I repair most of the problems, but I still have one which makes me mad.
When I go in 3nd gear (for example) and push throttle, car going ok, but when boost reach 0.5 bar (standard max boost) engine start making noise.
and I have feeling that car going better on low boost.

Is possible that air going out on exhaust mainfold, on higher boost ?

see picture? What you thing, is possible thata air going out??

 

your manifolds cracked in 3 places

 

yes maybe because I dont have flexy exh pipe and ex owner has touch the ground few times. Is possible that exh mainfold leak air out on boost/high temp?

 

Change the manifold, when it heats up those cracks expand, and air gets sucked in giving poor performance.

 

m8 u need to sortt that manifold quick...

 

I have spare one BUT , problem is to put ex mainf off the car!

Is this recommended to give the to garage to take this out and outt new one?

I think problem is because rust eat screws and they can easy brake isnt ?

 

not to hard,

lots of wd40 (penatrationg oil, ) and a blow tourch,

or you could use a bolt cracker if there really bad,

should only take a few hours

 

thanks on advice mate!