Injector Nozzle % Question
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Junior User
Joined: Feb 2013
Posts: 74
Likes: 0
From: Mansfield Center, CT
Injector Nozzle % Question
Folks,
My truck has 268k on the original injectors and is running fine. It is a daily driver and tows a 20' Gooseneck Horse Trailer (11k). I have been doing research on replacement injectors as I see that coming soon. I will be going with new injectors and will be adding tunes (probably DP Infinity Programmer w/CEI Hub for EGT, don't see a need for shift on the fly). Current mods are in signature. I am leaning towards 160cc. My question is nozzle %. Stock vs. 30% vs. 80% vs. 100%? Any input would be appreciated.
Thanks,
Jim
My truck has 268k on the original injectors and is running fine. It is a daily driver and tows a 20' Gooseneck Horse Trailer (11k). I have been doing research on replacement injectors as I see that coming soon. I will be going with new injectors and will be adding tunes (probably DP Infinity Programmer w/CEI Hub for EGT, don't see a need for shift on the fly). Current mods are in signature. I am leaning towards 160cc. My question is nozzle %. Stock vs. 30% vs. 80% vs. 100%? Any input would be appreciated.
Thanks,
Jim
Lead Driver
Joined: Jun 2013
Posts: 5,647
Likes: 891
From: north of Minneapolis, MN
I'm in the same boat. I think I've decided 160/30's.
I like that the fuel can be injected faster with the 30% nozzles, over the stock. It's a big discussion...others will chime in, don't bother with less than 100% nozzles. I'm not saying they're wrong....I'm still reading and making up my mind. I "think" tuning becomes increasingly important as the nozzle size gets bigger. I'm not looking to replace the turbo either and that's a factor as well.
I like that the fuel can be injected faster with the 30% nozzles, over the stock. It's a big discussion...others will chime in, don't bother with less than 100% nozzles. I'm not saying they're wrong....I'm still reading and making up my mind. I "think" tuning becomes increasingly important as the nozzle size gets bigger. I'm not looking to replace the turbo either and that's a factor as well.
Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
I have 30's and have had some issues with high egts. Some say it is because the fuel delivery has to be spread out over more time compared to 80's or 100's. Gearhead and I have tried a lot of difderent things with the tuning. I am not convinced that I like the remans. I may ask if I can upgrade. I have installed 18 remans so far. I would prob go 80's if I had it to do over. Dont want Rich's probs with the 100's but might like something a little bigger than 30's that can drop the fuel with less PW.
Lead Driver
Joined: Jun 2013
Posts: 5,647
Likes: 891
From: north of Minneapolis, MN
I have 30's and have had some issues with high egts. Some say it is because the fuel delivery has to be spread out over more time compared to 80's or 100's. Gearhead and I have tried a lot of difderent things with the tuning. I am not convinced that I like the remans. I may ask if I can upgrade. I have installed 18 remans so far. I would prob go 80's if I had it to do over. Dont want Rich's probs with the 100's but might like something a little bigger than 30's that can drop the fuel with less PW.
Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
Matt at Gearhead also suggested the 30's. Maybe if I get a set that all agree with each other I would be happy.
Butt-Head
Joined: Apr 2004
Posts: 9,415
Likes: 2,910
From: Reed Point, MT
I'd like to know about the problems Rich is having with 100% nozzles because they're 100% nozzles (not just about his injector woes in particular).
New User
Joined: Jan 2014
Posts: 6
Likes: 0
My PIS 175/80's are perfect for all of the daily driving and towing that I do. EGT's stay under control while providing great power. Used with a 38r with WW2.
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Lead Driver
Joined: Jun 2013
Posts: 5,647
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From: north of Minneapolis, MN
I'm probably being a bit **** on the research about this, but I'm planning on doing this once. One and done....I don't need a ring for the thumb.
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Lead Driver
Joined: Jun 2007
Posts: 7,760
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From: Hampton, Maryland.
Been having my own issues with the 160/30's but it's not because of the nozzles. I am having higher EGT's than I would like, but I believe they are as a result of up pipe issues and possibly a lack of air intake. Both of which will be handled in the near future.
Otherwise, I like the 160/30's a bunch more than stock.
Otherwise, I like the 160/30's a bunch more than stock.
Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
I was saying I would not want 100% nozzles because they would cause me to spend even more money on the truck. I know that he is happy with the injectors and your tuning.
Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
Been having my own issues with the 160/30's but it's not because of the nozzles. I am having higher EGT's than I would like, but I believe they are as a result of up pipe issues and possibly a lack of air intake. Both of which will be handled in the near future.
Otherwise, I like the 160/30's a bunch more than stock.
Otherwise, I like the 160/30's a bunch more than stock.
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
What about an intercooler upgrade to bring down those EGT's ? Have you considered that? Not the 6.0L but ones like the DI and hyper max. The DI intercooler on my F-250 dropped EGT's @ 100 degrees unloaded and close to 200 when towing the camper.
Post Fiend
Joined: Sep 2006
Posts: 7,426
Likes: 6
From: Sioux Falls, SD
About 7 years ago all my upgrades were aimed at lowering EGT's. The Van Turbo & gutting the EBPV dropped them @100 degrees, installing the DI intercooler resulted in the largest drop and the Swamps 175/146 single shots even help lower them a tad.