Slow acceleration at high rpm's and under boost- new plugs,wires,ff, and steady boost

[RandyJr]

Just fixed my 1992's headgasket and I have another bad problem with it. After doing a search, it seems that plugs and wires would be the main problem of slow acceleration and hesitiation.
I have installed brand new NGK plugs and wires, new fuel filter, correct timing belt and iginiton timing, and my aftermarket boost gauge shows the boost to hold steady the whole time I have the gas pedal floored. That leads me to believe that there are no boost leaks if the boost spikes and holds steady.
The slow accelerating and minor hestitation seems to happen as the rpms go up. My low end seems good, it's about at 3,000 rpms or around that, the car just does not speed up. I am not hitting fuel cut at all and no CEL. I took the car to about 6000 rpms on the highway and it seems like the faster it got, the slower the rpms went up. It almost stopped accelerating at about 6,000 and would not go higher, I had to shift to speed up.
When I get on it in any gear and at any speed, the boost shoots up really fast with very slow acceleration. I can hear the turbo spinning and the BOV working. It almost seems like the exhaust is super restrictive. I will be going to drop the exhaust pipe and take it for a run just for the heck of it. It seems like I can't beat a n/t from a stop and this is an AWD!!! That shows how slow it is once I give it a lot of gas and it begins to try and speed up.
I really need some advice on where to start, I'll report back after I drop the exhaust. Maybe a clogged cat convertor. If anyone has anything to add, please do.

 

[RandyJr]

I can't believe it! That fixed it. And man is that thing fast(and loud)! I take it that something in that exhaust pipe is stopped up, probably the cat.
Thing is that after talking with a few of my friends earlier, both of them didn't think it was exhaust related. I was sort of thinking that could be it seeing that boost goes up with no power. I was really hoping that it was something simple like that.
For those searching with similar problems, take about 10-20 minutes to drop your exhaust pipe at your O2 housing.

 

[hydrastas]

hmm this is sounding like a good idea, my cars slower than n/t non awd cars as well . are clogged cat's a somewhat common problem?

 

[UrN2nd]

actuallty a clogged cat isnt that far off. my 2g gst did the exact same thing put a test pipe in place of the cat and it was better not perfect my problem was ignition.... here is a rule of thumb..... (this isnt true on all cases before i get called out, just a place to start.) the easiest to understand...
crappy low rpm= air problem
crappy mid and accel= ignition
crappy high= fuel

start checking everything in your ignition what does the car do at WOT just sitting there out of gear

 

[viprez586]

crappy low rpm= air problem
crappy mid and accel= ignition
crappy high= fuel

Ignition, fuel, and your MAF/MAP are all key players in making your car run correct and can all cause problems at ANY RPM.

Here are the five majors:
Driver Input: TPS
Load: MAF/MAP
Feedback: O2
Temperature: ECT
Engine speed: RPM

If you have a problem with one of these, the car falls back on pre-configured maps and gives a designated value for the sensor.

BTW Catalytic converters melt from running high EGTs.