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Message: [QUOTE="96F350KID, post: 1424217, member: 1608"] Mine don't idle rough rough, they idle rougher than stock. I should more say you can notice they aren't a stock injector. The nozzles are a new size from a company who makes the majority of the nozzles everyone uses. I'm sure it can be tuned out but where I'd like icp and PW at idle it doesn't bother me. It's a comp used vehicle so i don't look for it to be like a stock truck. Also the switch from the 2675 VOP to the 3700 springs made it idle even better then before. I know people have argued it over and over again on the bench the 2675 wins over the 3700 which should be a given. When the inejctor goes to open it'll open the nozzle almost 1000 psi lower and run more fuel out. I don't argue with that. My argument is the atomazation of the fuel coming out. Lower pressure means larger fuel particles which come into harder to burn. Also explains why most 7.3s will burry a EGT gauge no problem. Even if you had less than 400ccs of fuel if you could make more heat energy with less fuel as apposed to more that should equal more power should it not? I.E if the injector you're using is dumping 400ccs but you only have enough time and heat to burn 290ccs of it as apposed to a 350cc injector with enough power to heat and burn all 350ccs. That theory applies to every other diesel platform in the aftermarket except the HEUI market. Even though they might flow more doesn't necessarily mean they make usable fuel. You could lob off the bottom of a nozzle and stick it on the flow bench, it'll flow stupid numbers but won't run worth a crap once in the engine. That is another question unexplained as how when you do the equation of injector pressure a hybrid has lower pressure more fuel but guys will argue you have more pressure because of the volume of fuel at the nozzle because of the time it takes to empty. I don't see how more fuel with less pressure equates to more power. I'm sure it was fine years ago when 500hp was big numbers but seeing as you could theoretically push a HEUI injector to peak at 25K+ injector pressure why it wouldn't be explored. I didn't say you had to make it work all day like that but for pulling or 1/4, 1/8th mile it should be fine for 30 seconds or less! I might be 100% wrong but it's not like I could spending my time doing something else hah! I just look at the common rail injection system which is what I was trained and know to make larger numbers with and have dropped rail pressure 5-6k like a A code to a hybrid does on a HEUI system and the HP numbers and particulate output look like a dirty old 7.3 or 6.0. [/QUOTE]