On going GLS help
 

Ok, so my 2001 GLS 3.4 is having issues. The car seems to not be getting fuel, as in bogging down, and stalling. It can rev to 3500 rpms in park, then bogs at 3600, but any load kills it.
Things i've now done.
Suck test on FPR.
New fuel pump
New Filter
Un-hooked Exhaust and ran (to check CAT) and it did rev to 4000 instead, but assumed because of low backpressure.
59lbs to the rail.

I dont know if anything like the coils could do it, because it revs nicely to 3500. But any ideas would be helpful.

Also, the car has 150,000 on it and was bought as a lost cause. The guy was told a bent rod, which seems incorrect.(no ticks, runs smooth)
The car ran fine, then going up a hill it shifted down, revved and quit.

Did you drive it unhooked to see if it helped? cause pretty sure in park the 3400 have a 4000 rev limiter. I know 3800's do.

Very good observation! Being new i had no clue. I'll actually drive it to find out thanks!

That was IT!!! It drove fine. Stupid cat! Thanks for the help!