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ah that explains it :banghead:

lol thanks

Ok, instead of starting a new thread, i'll revive this one. So since the first post, I have got the car looked at again and there were cracked fuel lines in the fuel tank. So that took my car from...

FWIW, I seafoamed the car through the brake booster line the other day, and the next day it ran great and had all of its power back. The day after, it went back to having the same symptoms...

Vehicle: 1998 Pontiac Firebird Trans Am Convertible LS1
Mods: SLP Lid, Cold Air Scoop, K&N Air Filter, LS6 Intake
Symptoms: Car is a little sluggish, big loss of power after 3000 rpms
Engine is...