SDX makes manny different sets and as for price there very close to a set of new 370's

 

One of the reasons the guys are telling you to get SDX versus the 370s is the spray angle. The 370s have a wide spray cone (155* versus a stock 145*) and the wide cone sprays down the cylinder walls instead of lighting inside the piston cup. A proper set of 145* injectors with EDM holes and correct pop will save you money on fuel economy while still making more than adequate power.

Just remember that you need sufficient air to light all the fuel, so unless you ONLY run wide open, size accordingly for actual driving needs (in other words, don't over size the injectors). A real good tune can run big squirts but there are not that many really good tuners (or people with fat enough wallets to try all the combos) to get there without going through a lot of hassles along the way.

General rule of thumb -- you play, you pay. Have as much fun as you can afford!

 

oh how true that statement is

 

Delray- they make diff sets like customs, but they also have 5.9 12v stage I and II injectors that yield significant power

 

What about mpg? what should I expect if I go with the 370's? (cause I like alotta smoke) and how much better mpg would I get by going with the SDX ones

 

In this post (and I'm not trying to pick on you) you are talking about 2 different things -- economy and smoke. The two do not go hand in hand.

You either get an engine that burns up all the fuel that you push into it with little or no smoke except when loading it hard, or you get an engine that pumps excess fuel into the system and makes all kinds of VERY annoying black smoke.

Which do you want? If COST is the object in purchasing the cheaper injectors and in your desire for fuel economy, then you probably DO NOT want 370s, which may install cheaply, but cost you EVERY DAY when you drive the truck.

A properly-sized and engineered injector is going to make the most power and do so with the best economy. The SDX models -- properly sized -- will be your best overall bang for the buck. Some people (depending on other factors in the truck and your own driving habits) are reporting mileage gains with SDX injectors. How much is anyone's guess, and I expect that any number we give you wouldn't mean that much until you drove the truck and proved it out.

A final question, why on earth do you JUST want to make a lot of smoke? Sounds rather juvenile to me. Smoke without the means to back it up (power) is like running a big wing on the back of a front-driver ricer car... All show, and actually hurts the go.

 

It is near impossible to tighten the pattern 10° without reburning an extra orifice on the interior, I have never seen an acutal micro-blind P570 or P665 Marine nozzle with a 145° pattern.

 

MPG sucks with the marines. They smoke a lot but also produce high egts (bad). The SDX will yield MORE power, less smoke, less egts, and typically 3mpg better.

 

I had a 98 that I was running 370's in because they were cheap. They were cheap for the start but like everyone has said, they end up costing more in fuel. You definitely need to run a larger turbo with any of these sort of upgrades. I had a htb2 62 compressor 12 turbine which was enough as long as I tuned my AFC properly. After learning my lesson, my new truck will have some sort of Stage II injector probably from Industrial Injection because I live close, but STAY AWAY FROM MARINE 370 INJECTORS if you want fuel economy.

 

"A final question, why on earth do you JUST want to make a lot of smoke? Sounds rather juvenile to me. Smoke without the means to back it up (power) is like running a big wing on the back of a front-driver ricer car... All show, and actually hurts the go."

Ive read several things on here that say smoke and power go hand in hand, is this not true?? And I wasnt saying that I wanted all smoke, just saying that I liked it to smoke alot. But thanks for all the advice!