Problem fixed...clogged cat was problem
 

just to let everyone know...if your having boost problems after you have a hose job done...have your main cat checked. Just had a Hi- flow cat installed and :bigthumb: WOW!!! HUGE DIFFERENCE...Can't wait to find that Damned Supra that's been giving me a hell of a time...:flamed: I was beating my head against the wall :banghead: trying to figure my problem out, but as always, the tread came through. This forum is AWESOME!!! :gotrice: THANKS TO ALL WHO SHARE THEIR KNOWLEDGE OF THESE AWESOME MACHINES!!!

What kind of boost problems were you having before the Hi-Flow install??

Low boost patten and overall sluggish response. Shifting from 1st to 2nd at WOT, I would get 0 boost. After waiting a few seconds for the RPM's to drop back down, I would get back on the throttle and I would then have boost. Now I have boost at all levels.

I remember on my firebird I crushed the cat internals once. WOT to 3k rpm then it felt like I hit a rev limiter, the engine would stop and even if the accelerator was on the floor it would feel like you weren't even touching it. Sucked.. why I swerve for rocks now )

How many miles did your stock cat have before replacing it?

110,000...give or take a few...

What was your boost pattern BEFORE you replaced your stock main cat?