I run Zex. On my 383 sbc vette I drilled out the nozzle a little and fitted a -4an line to it on the nitrous side. I then ran a 225 shot even tho the kit was only made to go to a 175 shot. Ran a 10.55 @ 133 and the car looked bone stock and had a pretty mild cam.
I now have a stock cammed L99, mods in sig. Putting a 100 shot into 12 psi and all is going well. Can't wait to get to the track with it. I'm wondering how high I can go with the shot size.
2011 SS IOM Vert. ECS Vortech 13.5 psi, Water/Meth, 125 shot, 2800 stall, LT headers, Zex 125 shot, Drag radials, Drag alignment. Details in Garage. I hack it up, Ted tunes it in.