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 Si, 12.5 psi (13 when spraying), JRE 2800 stall, LT headers, Catless, Zex 125 shot, LNC2000, Innovate Wideband, ID-850's, ZL1 pump, ADM FPCM, MSD BAP, Nitto 555R's, I hack it up, Ted tunes it in.