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Message: [QUOTE="Charles, post: 163954, member: 103"] If your truck is "bucking" when cruising at extra light load, then you simply need to drop a couple hundred pounds of ICP or lower the MFD at the very start of pedal travel. It is 100% a tuning refinement issue. Each truck responds just a hair different. But it is not inherent to a 200% nozzle. It's 99.99% of the time simply too much ICP at low pedal. Many people have ICP tables that call for upward of 1100psi as rpm climbs to ~1500 or so even when you're barely touching the pedal.... or not even touching it at all... Wrong... It needs to be ~5 to maaaaybe 700 or so when you're light on the pedal.... no MATTER what the rpm is... And that little "quirk" will just magically never happen again. Unless of course the first cell for MFD is too high... then the second you touch the pedal each time it will jerk a little. Also a simple correction. Each truck is different. Hell, each IDM I've run has been different in this area. If one is a bit stronger it will require less initial pw at minimum TPS than another, all else constant. Basically, my point is.... don't hang your tuner. Just get it fixed if it bothers you, because there's zero reason to have it if you don't like it. A 200% nozzle in no way dictates that the truck will behave "twitchy" or "jerky" if you will. Unless you tune it that way of course. It can be soft and spongy if you want. Wayyyy milder than stock. It's all in what you want. Simple keystrokes dictate all of this. Same for the 400% nozzles and all others. There's simply no way the nozzle can make the truck buck around unless the tuning dictates that it should. [/QUOTE]