Strange knock with boost?

[its turbo time]

Alright my car seems to run fine until i start to build any amount of boost. Then it will start to knock i guess. and anytime it gets more than about five pounds the car will kind of shake. i was afraid to go any higher than that.

About a week ago my car refused to run more than 15 psi and then it seemed to go down hill from there. The power started to sign off earlier and now it seems like its knocking like i said earlier.

Every once in a while know i will notice a strange tick at idle as well but thats kind of dissapearing.

It prolly could be a bunch of things but i was wondering what you guys thought

 

[SHADOWII]

It helps to

post your mod's in your signiture when requesting help, so the board knows what we are dealing with. Certain symptoms are common w/some stock or add-ons. Check the maf sensor?

 

[its turbo time]

signature added

 

[TurboDave]

Alright my car seems to run fine until i start to build any amount of boost. Then it will start to knock i guess. and anytime it gets more than about five pounds the car will kind of shake. i was afraid to go any higher than that.

About a week ago my car refused to run more than 15 psi and then it seemed to go down hill from there. The power started to sign off earlier and now it seems like its knocking like i said earlier.

Every once in a while know i will notice a strange tick at idle as well but thats kind of dissapearing.

It prolly could be a bunch of things but i was wondering what you guys thought

Is it a knocking sound, or is the car just chugging/bucking? If the latter, then if very likely is something related to a coil pack or coil module going bad.
That would be where I would start.

 

[its turbo time]

its more like a chugging