My car is studdering boost at around 4700 rpms only on full throttle, i am guessing a leak, what else could it be? only things done are a catback and a maf adaptor

 

Plugs ..?

 

plugs r still good, just checked them and i am going through my vaccuum lines and stuff, also cleaned the maf sensor and intake tube

 

my guess would be plugs or something else ignition if you dont find any leaks.

 

Do a boost leak test. Sometimes clamps do just become looser.

Could it be a slipping clutch?

 

doing the leak test, it sounds like its near the intake manifold but i cant find it!!!

 

might be on the back of the mani where the egr is that line loves coming off

 

Where is your boost level?

 

What boost level are you running? Has the car been tuned?

 

Get out your soapy water and start spraying it down. Does wonders for hard to find leaks.

Not sure which end of the intake manifold you are talking about but it could also be the throttle body shaft seals.

 

Maybe it is fuel cut. Incidentally, in the OP's modlist...what does MAF adaptor refer to? Is that a power mod. or just what is it please? I may be getting this confused with a MAF translator. Just me being old, I guess.

 

maf adaptor allows me to goto a cone instead of a airbox, not tunes, stock boost, finally found the leak, there is a flatspot on my upper ic pipe so it was letting out air while attatched to the intake manifold, thanks alot guys for all your help!!! But now I need a new upper ic pipe mesh piece that is the tapered 2"-3" But broke till later this week, and goes in for tuning hopefully soon!

 

Glad that you found your boost leak! Good luck with your tune!