What all is involved in the swap, im thinking of doing something for my top end, so i will prolly bolt on a nice big deseil turbo, the truck has enough torque, that i really dont care for increasing it, at least at the moment, because a 1600 rpm drop on my 31X10.5 tires still results in a spin, and a 2100 RPM drop with 4 wheel drive HI engaged yeilds in the same, im looking for some 16 inch wheels so i can install some really nice directional tread tires, but until then, I dont want any more torque. I will only run like 6 pounds of boost, which should yeild close to 50 HP, or at least in theory, because adding 14.2 in a perfect world will give me 100% gain, so after all the mods Ive done, i think ive at least gotten close to the stock quoted 160 HP, in pefect, 7.1 would be 80 hp, and figure in some loss, and 6 should give me close to 50, especially if i use a lil water injection to keep it cool.

Now back to the question, ill prolly use one of those rising FMUs because for less than 8 pounds of boost, i hear they are good, i might tap the trigger for 2 of the injectors, and then have a voltage meter fire them if the voltage coming off the o2 sensor reads an extremely lean condition.

So with the rising fmus, i will definately need to lower my fuel pressure, what all is involved in the swap so that i can use an adjustable fuel pressure regulator, and would 21 lb injectors be suitable for my application, i got slightly bigger than the normally recomended 19s just to be safe.

Thanks guys *(and gals?)*

 

An FMU stands alone, the stock fuel pressure regulator will never know it's there.

A turbo is just gonna give you more of what you've already got. If you just want more top end why not port your head and add a cam. That would save you some money and probably be more like what you want.

 

Turbocharging your engine is not simply a case of grabbing any old turbo and sticking it under your hood. You need to be very careful in selecting the proper size turbo for your engine or you will be disapointed in the performance and perhaps even the longevity of your installation.

There are several books available that go into great detail of proper sizing (or design) of the turbo that you'll need. If you just go grab "a nice big diesel turbo", you'll likely see a lot of turbo lag, due to the mass of the rotating assembly in the turbo. Remember that even the Cummins is nearly 60 cubic inches larger than the 300.

 

see, I almost want lag, I want to be pushing at least 2000 RPMS before it hits my boost, a minumal 5-6 PSI, because i have hard enough time hooking up with the torque I have. And I really dont want to have to rev it to forever and beyond to get HP, a turbo will allow me to add close to 50-60 HP, whereas you would be heart pressed to get a reliable street motor to gain 50 HP with a cam swap. All cams do is move the power you already have, and should probably be the last thing you do for quick power.