There's nothing wrong with the fp16g turbo. They sell thousands, there are bound to be a few bad apples. IMHO everyone's customer service is great when nothing is broken and horrible when it's busted. They're the largest sellers of these turbos for a reason ppl. They're specifically mentioned in the AP map because that's the exact turbo that COBB designed the map for.
Failure rates are never 0%. Like dumdum said, a lot of times people DO #### up the installation. Also, satisfied customers are far less vocal than ones trying to make enough noise to get hundreds of dollars out of the company. Put that together with good sales numbers and you are bound to see these type of posts.
Also, vendor bashing is against the rules here. I'm not calling out Kjott21 in particular here, I'm just saying if the subject becomes a discussion on forced performance's quality control or customer service, I will be forced to lock this thread.
Anyway, you should call the company and ask them what you need to install. Some ship with gaskets, some don't. Some recommend you buy new lines, others ship you new lines. I think FP is better than most about including everything you need but a phone call would help. Also, if you are not doing the install, talk to your installer. If they've done this a hundred times before, they can probably put most of your worries to bed.
2015 STi: Still Stock
04 STi, 04 WRX: SOLD