i dont know whats wrong but here are the symptoms

1) loss of low end power
2) engine shakes like crazy
3) rough idle
4) when i shift out of gear (coming to a stop) the idle drops down to 200RPM the slowly comes up to 750RPM
5)no power on reverse
6)the boost doesnt seem to kick in as hard

ive adjusted my TPS and that kinda helped, im thinking it s a vacuum leak in the upper intake manifold or low compression... can anyone cinferm what these symptoms are?

any help would be great!

 

sounds like compression test is in order, or you have a vacuum leak somewhere

 

I would say that you either have;
1) blown turbo
2) clogged cat
3) stuck or broken apex/side seal
4) vacume leak.

 

heh, he thinks he should be stressed out. Check sig and tell me what's wrong.

 

Dang man that sucks i'm really stressed out about my rex 2 so many problems, always its problem after problem pisses me off.

-Andrew

 

No FCD for his mods. Hit fuel-cut?
Maybe got some boost creep; no mention of porting his wastegate.

 

Check your BAC. I had a vacuum leak coming from it and had the exact same symptoms as your getting. If not that, check for vacuum leaks like said before.