CSD T4/SXE Install Write Up
The back pressure has not been an issue. Probably slightly worse than 1:1 compared to right at 1:1 previously.
I picked up a new gasket from summit for this install and used divided version. It was Precision Turbo # PTP075-5017 in case anyone needs it in the future.
Just kidding, if it ain't broke, don't fix it. I recently was just went to smaller injectors and needed a smaller turbo. The SX-R is definitely an improvement over the SX-E....and it's quieter(has a totally different whistle/ sound too)
With a little more seat time now, it does feel like it better suits my driving style/habits. Light throttle power feels more “on tap” compared to the .91. Right now I don’t think this is an earth shattering type of change while empty but was definitely a change for the good so far. Again, difficult for me to judge specifics since it was installed during winter which didn’t give good back to back driving to compare.
The real test will be when it’s towing. From what I’ve seen of Eric’s and Brokestroke’s results I don’t expect any EBP issues. I also believe it should help during the light throttle flat ground towing.
Gotta admit, if I swap turbos again it may be to a KC stage 1 Gen 3. The reviews on it have been very positive. If that had been available at the time, I’d never have went T4. I just don’t feel it’s necessary for a stock or slightly larger injector truck now with KC’s new lineup.
For my driving and use, I definitely prefer the .83 with the 200/30. Feels like it has a lot more power/torque below 2,000rpm. The .91 carries the power out much better from 2,800 - 3,400 rpms and ebp stays more in check above that 2,800rpm (3,300 rpm wot with .83 boost ebp was about 40/70 and with .91 its about 40/60.
The .83 just seems mean and hits hard instantly, the .91 is a very smooth power across the rpm band, feels less impressive than it actually is due to how smooth it is, but definitely slower to come online than the .83.
The .91 seems like it is more of a necessity with 238cc injectors.
Interested to see how the 238’s do.
The 200/30 I am running a 3.8ms tune at 3,400psi
With a little more seat time now, it does feel like it better suits my driving style/habits. Light throttle power feels more “on tap” compared to the .91. Right now I don’t think this is an earth shattering type of change while empty but was definitely a change for the good so far. Again, difficult for me to judge specifics since it was installed during winter which didn’t give good back to back driving to compare.
The real test will be when it’s towing. From what I’ve seen of Eric’s and Brokestroke’s results I don’t expect any EBP issues. I also believe it should help during the light throttle flat ground towing.
Gotta admit, if I swap turbos again it may be to a KC stage 1 Gen 3. The reviews on it have been very positive. If that had been available at the time, I’d never have went T4. I just don’t feel it’s necessary for a stock or slightly larger injector truck now with KC’s new lineup.
I am thinking if I ever get to my project truck, I might go KC rather than T4. One possible downside to a KC turbo is Charlie is constantly improving(but that's also good). I remember when he used to test and post his turbos in comparison to the Borgs. If you buy a KC today, next years version will be even better; where borg warner has a much longer upgrade path. Maybe it just seems that way.
We had the S300 series even though I started with a Pius/ Bell version. Then the SX-E which still holds strong, and now the SX-R possibly becoming more popular(even though there are only less than a handful of us running the SX-R)
Are we near the point where KC will surpass the performance of a BW...it sure seems that they are definitely neck and neck now and Charlie might be slowly pulling ahead. If/ when Charlie figures out a great VGT option for us; I will definitely switch...
For my driving and use, I definitely prefer the .83 with the 200/30. Feels like it has a lot more power/torque below 2,000rpm. The .91 carries the power out much better from 2,800 - 3,400 rpms and ebp stays more in check above that 2,800rpm (3,300 rpm wot with .83 boost ebp was about 40/70 and with .91 its about 40/60.
The .83 just seems mean and hits hard instantly, the .91 is a very smooth power across the rpm band, feels less impressive than it actually is due to how smooth it is, but definitely slower to come online than the .83.
The .91 seems like it is more of a necessity with 238cc injectors.
Interested to see how the 238’s do.
The 200/30 I am running a 3.8ms tune at 3,400psi

I thought 200's already had a hard time emptying or is that for 80% nozzles and why you are trying 25%?
Thanks for your input/ experience on the housings. It sounds like I need a 0.87 so i can have the best of both

just like turbos I guess, you have to pick what's most important. Based off what you said, it seems the 0.83 is more beneficial as i'm only in the 2800+ range under hard pulls or WOT downshifts. My truck doesn't like to be in 2400+ range for extended periods...or i don't like my truck to be. It sounds horrible and like something isn't happy. this seems odd as that's where the 7.3 should be happiest. I like to be around 2k
I can't make a short post for the life of me
WHAT...you talk me into 200/30's and your going to play with 238/25's

I thought 200's already had a hard time emptying or is that for 80% nozzles and why you are trying 25%?
Thanks for your input/ experience on the housings. It sounds like I need a 0.87 so i can have the best of both

just like turbos I guess, you have to pick what's most important. Based off what you said, it seems the 0.83 is more beneficial as i'm only in the 2800+ range under hard pulls or WOT downshifts. My truck doesn't like to be in 2400+ range for extended periods...or i don't like my truck to be. It sounds horrible and like something isn't happy. this seems odd as that's where the 7.3 should be happiest. I like to be around 2k
I can't make a short post for the life of me


Going to stick the 200/30 in the other truck either with my other t4 kit and the 364.5/68 .83 I have or with a kc gen 3 stage 1 which I am leaning towards since I have a pedestal and bellowed up pipes already.
The DDP %25 empty in about the same time as an %80 nozzle, they also have 2 extra holes.
Don’t have much data on them, only seen flow data on one set of 200/25 so far. So I am experimenting to see how they do and if they will empty 238 reasonably. Maybe they will be a good option to offer in the future on our injector builds.
So far the 200/30 and 364sxr w/.83 is my favorite combo, and seems to be a very well rounded setup
Ford Trucks for Ford Truck Enthusiasts

Going to stick the 200/30 in the other truck either with my other t4 kit and the 364.5/68 .83 I have or with a kc gen 3 stage 1 which I am leaning towards since I have a pedestal and bellowed up pipes already.
The DDP %25 empty in about the same time as an %80 nozzle, they also have 2 extra holes.
Don’t have much data on them, only seen flow data on one set of 200/25 so far. So I am experimenting to see how they do and if they will empty 238 reasonably. Maybe they will be a good option to offer in the future on our injector builds.
So far the 200/30 and 364sxr w/.83 is my favorite combo, and seems to be a very well rounded setup
This is why I have to stay away at times....new options makes a person want to see what it's all about. I agree, the 200/30's seem like a well rounded option/ middle ground. there's still definitely a lot of power there and more useable for typical use
wait until you see my response in the matrix thread...I failed again. I'm all over the place. A phone call would probably be shorter, lol

luckily we both had things to get back to. It was great to finally get to talk to him though...I usually just blow up his phone with texts. I am very appreciative that he is here and does all that he does for the community. It's a different level from the forums; both which are great.
While things are different now on the forums, I've had great support from the forums, vendors, Eric. I'm glad these old beasts are still heavily supported.
Back in the day it seemed there was more going on for upgrade/ mods, now it seems more trouble issues. Maybe that was the learning curve back then. There are definitely different recommendations now compared to back then, plus things have improve over the years...tuning, turbos, etc.
If only I was smart enough to leave well enough alone, but that's no fun
I have zero regrets as the T4 has served my family well for many miles, up to 9,000' elevation and at a price point that is only told alongside an ever growing fish story.
Back to the topic at hand... Just yesterday as I was towing the 5th wheel 325 miles home, I too was wondering what was on Jason's mind about his new to him .83 housing. I am very happy with my set up and feel the goals of efficiency and reliability have been met since achieving 11.5 MPG over the 650 mile round trip. Longevity is the last goal to obtain, but I am well on my way to that. Seeing typical boost measurements of 4 - 24 PSI give me peace of mind that I am not pushing the 25 year old design past it's limits lending to longevity.
The ONLY thing on/with my truck I would change is to have 4.30 gears instead of the 3.73 set. Although, it took me a year to find this one a decade ago, so there is that. I am not into the desire enough to make the change though and would only make the change in the event of mechanical failure of one of the gear sets.
I am interested in what a new set of stock injectors or a CNC HPOP would do for the efficiency of the truck, but hope I never have to realize those aspirations. I have spares in the garage waiting though, just in case.
The T4 Borg Warner SXE 63/68/.91 turbo is perfect for my style of driving and towing our 5th wheel around this great nation of ours. Should of, would of, could of is always there when the mind begins to wander, but budget, lack benefits and feasibility always reign back in the desire.
I have a CNC Stage 2 sitting on the shelf as well and I might need it soon. My Adrenaline's "non serviceable" cap i believe is seeping oil. I don't recall how old I told Eric it was but not all that old. Thanks for reminding me, I do need to get an oring kit for it from dieselsite. Otherwise it seems to be holding up/ performing just fine
















