Pontiac Trans AM GTA 5.0 (1988) exhaust sound

'88 Pontiac Trans AM GTA 5.0, American car & bike show in Istria, Croatia 2011

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1988 Trans Am GTA Problems
This is my 88 T/A GTA 350 5.7l TPI Engine. I've been having problems trying to get it running, I was able to get to start and idle but it does poorly at 400rpm, that was after I unclogged the injectors. I messed around with the timing and also checked for vacuum leaks but it didn't improve idling, it also stalls when I try to open the throttle. Please help trying to solve this problem. Thanks!

Pontiac Trans AM GTA VS 4Gen Pontiac Firebird drag race
1988 Pontiac Trans AM GTA 355cid Supercharged VS 4Gen Pontiac Firebird 1/4mile drag race JOIN QUIZGROUP PARTNER PROGRAM: http://join.quizgroup.com/?ref=268293

1987 Pontiac Firebird Trans Am GTA
This is my GTA 2 years after 2009 on the same day and same time but in 2011 Facebook.com/3rdgenfbodybandit