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Old 06-27-2013, 07:52 AM
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Replacing factory injectors

HI All,

I am thinking about replacing the factory injectors after 107K miles. They are getting a bit noisy. I have a 4" turbo back exhaust, AFE cold air intake and the TW 6 position chip. So I'm wondering what would be the recommended injectors. My truck is used mostly for towing a 13k lb 5th wheel and I'm not interested in a new turbo, inter cooler or fuel system. So stock or slightly above stock would be fine. Reliable/dependable performance is paramount to me.

any and all suggestions will be greatly appreciated.
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Old 06-27-2013, 11:25 AM
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107k seems premature to me. they should make 200k easily. if you arent going to do any turbo upgrades just go with stock sticks and if you dont alread have them get gauges. my injectors are in transit to Jim at Rosewood Diesel and they have 280k on them. they were still performing but the injector o-rings went bad and i figured since i had them out i might as well have them rebuilt.
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Old 06-27-2013, 01:00 PM
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107k seems way too early to change them out.
I would thoroughly go through the truck and make sure everything is ok.
Getting new injectors would be a big waste of money imo.

Id do the hpx, frx, and in tank mods before I did injectors.
These trucks get a little louder with age, just as any engine does
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Old 06-27-2013, 01:29 PM
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Thanks for the info...


I'll have to look up hpx and frx, not sure what they are. Everything on the truck is in mint condition. I'm just looking for a reliable/dependable performance without having to do head studs, high pressure oil pup etc.
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Old 06-27-2013, 02:13 PM
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Hpx is a high pressure oil crossover line and the frx is fuel crossover- regulated return using springs. Riffraff sells them both. They help bleed/keep air out which also helps quiet the motor to a degree.

You seem happy with what you have. The only other thing would be a 6.0l tranny cooler since you tow a lot. Other than that, I do not see a reason to do much more than you already have

If you are after a bit more power, just get stage 1 injectors and custom tunes are required. That will cost around $1500 iirc.

Im guessing you already have guages since you have a ts chip. Not sure if its a standard ts chip or has good tunes from php, tony wildman, etc.
Disregard the tranny cooler if you have a manual tranny

Last edited by INFRNL; 06-27-2013 at 02:19 PM.
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Old 06-28-2013, 07:39 AM
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Thanks INFRNL,

I have gauges to read EGT, Tranny temp, Water temp and Boost. I put these in the first weekend I owned the truck. To date I've never let my boost exceed 26lbs, my tranny has never exceeded 170F, water has never gone above 215F and the EGT has never exceeded 1400F (Pre turbo). I added the 6.0 tranny cooler about 50k miles ago.

My chip isn't exactly custom tunes, but Tony did take in account my mods as well as how I drive.

Stage one injectors might be the right way to go, and the options/suppliers are abundant. I was also thinking that if I do the injectors that I should do the intake manifold and either a ball bearing turbo or a newer turbo wheel (replace the wicked wheel I have now).
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Old 06-28-2013, 09:15 AM
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Sounds like you are pretty set. Im sure you know but your tunes will need to be rewritten for bigger injectors.

I thought you didnt want a new turbo? Most will recommend the 38r. Or you could do the ww2. Im not sure about that area.

If you really want injectors look at full force, PIS, or rosewood
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