A few years ago I read in a magazine that there was a progressive nitrous system designed for off road use. Unlike a regular Nitrous system that comes on full blast at full throttle, this system comes on gradually from quarter throttle and ramps up to full spray at full throttle. Gives more horsepower without the sudden wheel spinning jolt. I have been looking for this system and I am having problems finding it and I was wondering if someone on here was familiar with this system. I cannot remember the brand of the system and I have looked at several different retailer looking for it. I remember from the article that they did have two versions, one mounted on an early nineties Cherokee (Dry spray mounted in the intake tube after the air filter) and a plate kit mounted on a eighties model Chevy half ton. Thank for your help.