Hi all, my 1st post in this thread.
Just felt like posting this if anyone finds it useful.
I got my KFL+ 6months ago, it's a clone but not sure manufactured by whom, it came in a black box with no label. Very well built, supposedly 1:1.
It works right out with whatever coil I put in it, no dry hits, no leaks and I was happy with it. I got it for the main purpose as an 'outdoor' atty as I've been using drippers all these while and a real hassle when I'm outside the house.
One thing I noticed, it has 'tightish' draw since I lung inhale in all my RDAs. I removed the air setscrew completely and it was a bit better but still tight. Read about people drilling the base hole, mine measured 1/16(1.6mm) all the way in, the center post hole measured 1.5mm and obviously the choke point, so I enlarged it a bit to 1.6mm, same as the base.
Draw improved slightly but still can't lung hit comfortably without slipstreaming.
Remembered reading here that some folks open up the center post to 5/64(1.98mm) and get good airflow but the walls of the post will be quite thin and may break when install/uninstall. After thinking about it, I'm willing to never ever to remove the post to change insulator or cleaning, so I tightened it as much as I could before drilling out to 5/64,together with the base hole as well.
Airflow improves considerably but somehow not quite there yet for me, plus beginning to get dry hits occasionally.
Tried searching if anyone drilled bigger than that. Seems that some opened up to 3/32(2.34mm) but only for the base hole. Center post wall looks quite thin but a little bit more reaming should be ok. Took out a 2.2mm bit and open it up as well as the base hole. Now the walls look real thin,haha. Think it'll break if I try to take it out.
Enlarged the juice channels as well and now finally I can lung hit like my RDAs with lots of vapor. Amazingly,I don't really notice any loss of flavour and very comparable performance to my RDAs (IGO-W, Nimbus and Zenith V2, all running single coils). So far tried up to 24w with no issues.
To think that I was looking at Orchid V2 or Fogger V4 to replace this KFL+ as my out and about atty, now it's staying with me as my reliable and good performing companion
