My bad. I should have specified from the start that I could get a new tune written as well. I was just wanting to know if it was relatively safe on a stock motor...
Yes, yes and yes, man.
Yes. You can turn a stock d-max 3500-4000 rpm, my current tune is almost the same as a tune for a stock turbo truck, I tap out at 3850rpm, I am running a 4094avant and a stock cp3 and stock sticks, my tune pushes plenty of fuel down low, however the pw/us is so high ( im not sure exactly what it is, i just know they are "maxed out") that i dont think fuel is getting into the cylinder at the proper moment, which is why i believe it smokes, but it cleans up on top just fine, to only a slight haze at WOT, up top I can tell I'm running out of fuel and the charger wants more but there just isn't the fuel for it, so adding rpm wouldn't help with out the fuel to make the power, for me or you.
Yes. You can alter your shift points, but again there is no need to in your current set up, because you don't have the fuel, even if you did, there's a reason why most of the guys keep the shift point close to stock, because it works and works well for most all applications and purposes
Yes. You can have all these changes done and still be safe on the stock engine, as long as the guy/gal writing your tune knows that the engine is stock and you want it to stay together. However none of it is going to benefit you like you might think or want, in the end you will have a quirky driving truck and allot of tuning time and money into tuning that you could have spent on getting more fuel into the cylinders.
You mentioned "Mark". We're you referring to Mark Broviak? Yes mark runs 4000rpm, maybe even a little more, but, "Mark" has 200 over injectors, a 12mm cp3 and a built engine....and he tunes his own truck, and is one of the premier tuners in the nation, and has his own dyno, and races every weekend, and has years of experience and.....no need to continue
There's no need to "re-invent the wheel" here, lots of guys have done what you are doing and have chased the same goals as you are, I'm one of them, my next step is the vgt72 upgrade, however I have +60% injectors and a 12mm cp3 waiting for it. Believe it or not, I take the advise of others here seriously, I don't always do things in the same order as everyone, but I'm pretty much doing everything the same way, cuz it's been proven to work, why try to deviate from an already successful path???