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Message: [QUOTE="Power Hungry, post: 549451, member: 1375"] There are a few things going on here that contribute to the haze. First off, there is the combination of 250cc hybrid injectors combined with 200% nozzles. Hybrids have a lower Intensifier Piston multiplier and therefore produces a lower injection pressure at the nozzle. In an ideal world, you'd simply raise the ICP, lower the pulsewidth, and everything would be cool. However, the HEUI injection system has some severe limitations. HEUI injectors become extremely unstable when the pulsewidth falls below 1.0-1.2 ms. An ideal idle pulsewidth would be 1.8 - 2.2 ms, but with 200% nozzles, this simply is not feasible, usually resulting in pulsewidths in the 1.3 - 1.5 ms range. The higher you raise the ICP (in an attempt to alleviate the hazing), the lower the pulsewidth is going to be forced in order to maintain idle. Once pulsewidth falls below 1.2 ms, the idle starts to get choppy and/or starts rolling. In order to stabilize the pulsewidth, we often reduce the ICP but that also can cause a rolling idle, not to mention that the drop in ICP reduces injection pressure and results in poor fuel atomization... ie. Hazing. There are going to be some concessions you're going to have to make to have a smooth, stable idle. A slight haze is often the cost. However, one thing I did notice is that your Injection Delay is extremely low at idle. I's strongly recommend raising it to about 1.5 - 1.6 ms (thereby advancing the SOI) and that will help to dramatically reduce the hazing by allowing the the fuel more time to burn in the cylinder. Obviously, you'll want to quickly ramp down the delay by the time you hit 8 MPa so you're not pushing the SOI under load. Give that a shot and let me know how it comes out. [/QUOTE]