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Message: [QUOTE="Nobody Special, post: 568447, member: 9932"] No. It's that every single truck out there is going to run differently with injectors that "big". At that point, there are (or should be) so many modifications to the truck that will make it run so much differently to the next that any "tuner" with any sense will not want to waste time remotely tuning a truck that is going to be a huge finicky bitch. Additionally, there are fewer and fewer people who are willing to put up with the nuances of "almost just right" concerning tuning; without the truck being right there (tuned on the spot), there is very little chance of making it as perfect as it can be without a dozen attempts at sending tuning back and forth. With the myriad of aftermarket injectors available and the modifications done to them, there isn't a "baseline" tune that will work well for any more than the truck that was initially tuned. Small variances in the injector build as well as (and most importantly) nozzle orifice imperfections become VERY important when trying to get a decent idle and retain some drivability. The biggest problem is that people who want to install these ridiculous injectors are also ones that live no less than fifty-two light years away from anybody capable of live tuning. They want to use the truck on the street and have a good idle with no jerkiness while cruising the mall parking lot looking for jail bait. I think it's possible for any custom tuning outfit to throw a set of tunes on your 400%-nozzled injectors of choice and make it run. Math is your friend. However, making it docile enough to drive on the street is the challenge that takes a lot of finesse and I don't think it's the chosen tuning company's responsibility to foot the bill for the time/effort/shipping/etc. when a person wants to invest a ton of money in a set of injectors but doesn't want to invest a bit more for live tuning them (and subsequently badmouth the tuning company for not getting the tuning right on the first couple of tries). That's my take on the subject. Not that it matters, but it's my perspective. [/QUOTE]