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Message: [QUOTE="Power Hungry, post: 483282, member: 1375"] The problem we're running into with FICM tuning with larger injectors nozzles has a great deal to do with the relationship between the FICM tuning and the ECM tuning. If you're running large nozzled injectors and an aggressive ECM tune, the FICM tuning could actually end up overfueling in the lower RPM range with excessive smoke and EGTs as the net result. We've been working on FICM tuning for large nozzle injectors and when used in combination with our own ECM tuning, we've had very good result as far as driveability and EGT control. Where it becomes difficult is when trying to match the FICM tuning to another vendors tunes. With stock nozzled injectors, this isn't much of a concern and our FICM tuning works quite well with most performance ECM tunes. Put modified nozzles in the mix and then you're looking at something entirely different. It basically comes to this... When running larger injectors, you're going to need to match the FICM tuning and the ECM tuning in order to achieve the best results. Since Eric knows what he's running in his ECM tuning, his FICM tuning is going to complement the setup. Even our custom FICM tuning might not be the best match for Eric's or Matt's or whoever's tunes, because we're not tuning as a matched set. There are just too many variables in regards to how the ECM is tuned. Now, if it came down to running a combination of our ECM tuning and FICM tuning, the results would be considerably better. Also, keep in mind that FICM tuning was designed to help overcome the PWM limitations of the injection systems by allowing longer pulsewidths. Modified nozzles will already increase fuel flow by allowing more fuel in a shorter time, so the benefits from FICM tuning in situations with modified injectors are going to be dramatically reduced. I hope this helps. [/QUOTE]