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Message: [QUOTE="Super Diesel, post: 1205909, member: 5237"] One of those might be your issue, especially the turbo sticking wide open once before. If you've got stock injectors, it shouldn't have been a smokey run, how'd it do on the dyno? Was it smokey or relatively clean? He's running the SRL Extreme tune, but I'm curious as to what changing the FICM tune will do. The way Jay @ PHP explained it to me once, and this was years ago, was that the FICM tune is the FINAL "authority" for how much fuel the injectors will deliver. So, if OP has a full fuel ECM tune (which he does) but is running a restrictive/conservative FICM tune (which he is, IMO) then the injectors will only flow what the FICM tune allows it to. Removing the Atlas 40 FICM tune, and going with stock FICM tuning, would benefit (I think) OP's numbers - simply because he's removing the restrictive FICM tune. If he had the Hercules 100 FICM tune, or even the Atlas 80, I'd bet his numbers would definitely go up. I understand where Matt's coming from. Just trying to piece together everything I've heard and seen. I've seen trucks with stock injectors benefit greatly from FICM tunes, and on the same day - I've seen trucks with bigger injectors dyno less after putting a FICM tune on it. But now, PHP offers custom FICM tuning for your specific injectors, and I can personally say that it makes a huge difference. I was running the "generic" Hercules 100 FICM tune when I got my 190/75s and custom ECM tune. It was super smokey and very hot - then I got with Jay, and he tweaked my Hercules 100 to fit my injectors; truck ran amazing after that. [/QUOTE]

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