Hi all new to this forum, is it advisable to update a new flashpaq b4 fist use or just use as is. I have 09 Avalanche 5.3l
It all depends on when it was manufactured. I would say, try it and if it tunes, then you are fine.
Email me directly if your having ANY trouble with the forum.
Not able to LOGIN, email me with your Username that you registered with.