E99 7.3 performance (Towing) upgrades
Laughing Gas
Joined: Apr 2016
Posts: 850
Likes: 114
From: Virginia
After owning a 7.3 for 5-6 years, I've come to the conclusion that they are a great candidate for a farm/ranch truck. They don't make enough power to hurt themselves (in stock form), and they still run well enough to get the job done even if the motor isn't totally healthy. I've towed 10,000-12,000 pound peanut wagons before, but it was from the field to the farm (5-10 miles max) and I never got over 30mph. Would I want to hook up a 10-15,000 pound toy hauler and head cross country? Not without a lot of upgrades to the motor and the truck itself. And even then, I'd probably just buy a 6.7 or an older, single-axle road tractor.
Laughing Gas
Joined: Jun 2013
Posts: 1,098
Likes: 514
From: Yokosuka Japan
below was my first thoughts on this thread...... then i got confused with myself....
agreed, but what is what?
I hear that 140/0 cc injectors are normal on E99 as well as L99 but the only stock (from alliant) injectors I can buy are 160/0 .
Ibarely know what the fark the /0/10/30 stands for... it makes it really hard to make a decision (It appears to be how the injector spreads the fuel out) ... great.. how does that affect me?
I, who wants only the measly 275 hp that the L99's get? (mine is a late 99 so supposedly 250 HP. ) I am not looking for 400 HP, i am only looking for the stock HP and Torque that a 2001 puts out. I do not want to put a boost sensor probe on a work item, I do not want to put an exhaust temp sensor on a work truck... I want it to pull my track car which has a full complement of sensors to the track. ((and the occasional firewood load)) ... i want it to work, not blow coal... some things are over complicated by people who want a 2001 truck to work as a 2019 truck....
its confusing and a flash point.
how hard is this? makes me want to buy a Isuzu, Toyota or a Nissan that you do not have to **** with.
agreed, but what is what?
I hear that 140/0 cc injectors are normal on E99 as well as L99 but the only stock (from alliant) injectors I can buy are 160/0 .
Ibarely know what the fark the /0/10/30 stands for... it makes it really hard to make a decision (It appears to be how the injector spreads the fuel out) ... great.. how does that affect me?
I, who wants only the measly 275 hp that the L99's get? (mine is a late 99 so supposedly 250 HP. ) I am not looking for 400 HP, i am only looking for the stock HP and Torque that a 2001 puts out. I do not want to put a boost sensor probe on a work item, I do not want to put an exhaust temp sensor on a work truck... I want it to pull my track car which has a full complement of sensors to the track. ((and the occasional firewood load)) ... i want it to work, not blow coal... some things are over complicated by people who want a 2001 truck to work as a 2019 truck....
its confusing and a flash point.
how hard is this? makes me want to buy a Isuzu, Toyota or a Nissan that you do not have to **** with.
Lead Driver
Joined: Jul 2017
Posts: 6,862
Likes: 2,335
From: WV
Kenn,
E99 is 130/0
L99-up is 140/0
These are “split shot” injectors which “waste” a bit of fuel with a pre shot to help reduce noise.
OBS trucks came with “single shot” injectors that do not have the pre shot. This is what almost all performance injectors will be. Single shots need new tuning to run correctly in a Super Duty.
The first number is injector volume. (Over 1000 cycles I think?)
The second is nozzle size. 0=stock, 30=30% larger than stock. Larger nozzle let’s fuel through quicker.
If you don’t want to run a pyrometer then I’d suggest remaining near stock. In this case I’d do free flowing muffler, bellowed uppipes, KC Balanced Assembly (or Stock Plus) turbo and stop with performance mods there.
OP, sorry for the little detour.
E99 is 130/0
L99-up is 140/0
These are “split shot” injectors which “waste” a bit of fuel with a pre shot to help reduce noise.
OBS trucks came with “single shot” injectors that do not have the pre shot. This is what almost all performance injectors will be. Single shots need new tuning to run correctly in a Super Duty.
The first number is injector volume. (Over 1000 cycles I think?)
The second is nozzle size. 0=stock, 30=30% larger than stock. Larger nozzle let’s fuel through quicker.
If you don’t want to run a pyrometer then I’d suggest remaining near stock. In this case I’d do free flowing muffler, bellowed uppipes, KC Balanced Assembly (or Stock Plus) turbo and stop with performance mods there.
OP, sorry for the little detour.
Cargo Master
Joined: May 2018
Posts: 2,442
Likes: 993
Is 38ft the outside length of the trailer or the inside dimension? From my experience 12-14,000lb is easily doable with the right setup, once you start heading into 15-16,000lb+ territory the truck really starts to struggle on grades. With good gearing, turbo, tuning I pull 12-14k on big grades without any heat issues.
Lead Driver
Joined: Jun 2013
Posts: 5,648
Likes: 893
From: north of Minneapolis, MN
Flash point? What does that even mean?
Cargo Master
Joined: Dec 2007
Posts: 2,039
Likes: 310
below was my first thoughts on this thread...... then i got confused with myself....
agreed, but what is what?
I hear that 140/0 cc injectors are normal on E99 as well as L99 but the only stock (from alliant) injectors I can buy are 160/0 .
Ibarely know what the fark the /0/10/30 stands for... it makes it really hard to make a decision (It appears to be how the injector spreads the fuel out) ... great.. how does that affect me?
I, who wants only the measly 275 hp that the L99's get? (mine is a late 99 so supposedly 250 HP. ) I am not looking for 400 HP, i am only looking for the stock HP and Torque that a 2001 puts out. I do not want to put a boost sensor probe on a work item, I do not want to put an exhaust temp sensor on a work truck... I want it to pull my track car which has a full complement of sensors to the track. ((and the occasional firewood load)) ... i want it to work, not blow coal... some things are over complicated by people who want a 2001 truck to work as a 2019 truck....
its confusing and a flash point.
how hard is this? makes me want to buy a Isuzu, Toyota or a Nissan that you do not have to **** with.
agreed, but what is what?
I hear that 140/0 cc injectors are normal on E99 as well as L99 but the only stock (from alliant) injectors I can buy are 160/0 .
Ibarely know what the fark the /0/10/30 stands for... it makes it really hard to make a decision (It appears to be how the injector spreads the fuel out) ... great.. how does that affect me?
I, who wants only the measly 275 hp that the L99's get? (mine is a late 99 so supposedly 250 HP. ) I am not looking for 400 HP, i am only looking for the stock HP and Torque that a 2001 puts out. I do not want to put a boost sensor probe on a work item, I do not want to put an exhaust temp sensor on a work truck... I want it to pull my track car which has a full complement of sensors to the track. ((and the occasional firewood load)) ... i want it to work, not blow coal... some things are over complicated by people who want a 2001 truck to work as a 2019 truck....
its confusing and a flash point.
how hard is this? makes me want to buy a Isuzu, Toyota or a Nissan that you do not have to **** with.
https://video.search.yahoo.com/yhs/s...0&action=click
I agree with RacinJasonWV suggestions...and it's the direction I'm heading with my F350...
Logistics Pro
Joined: Mar 2007
Posts: 4,588
Likes: 841
From: knoxville, tn
I think the flash point is in reference to a moment of anger because of the confusion.
when you start to consider upgrading a truck there are so many paths. Most of which have been traveled already and the experience of others is a great guide. Check out the turbo matrix. There is a lot of good info about performance based the modifications performed.
when you start to consider upgrading a truck there are so many paths. Most of which have been traveled already and the experience of others is a great guide. Check out the turbo matrix. There is a lot of good info about performance based the modifications performed.
Laughing Gas
Joined: Jun 2013
Posts: 1,098
Likes: 514
From: Yokosuka Japan
I think the flash point is in reference to a moment of anger because of the confusion.
when you start to consider upgrading a truck there are so many paths. Most of which have been traveled already and the experience of others is a great guide. Check out the turbo matrix. There is a lot of good info about performance based the modifications performed.
when you start to consider upgrading a truck there are so many paths. Most of which have been traveled already and the experience of others is a great guide. Check out the turbo matrix. There is a lot of good info about performance based the modifications performed.
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More Turbo
Joined: Oct 2020
Posts: 546
Likes: 261
@cleatus12r and @Bitterroot Diesel
where do you feel the 7.3 fails in terms of duty cycle? EGT/intercooling duty cycle is the issue with more power or coolant/oil temps? Both? Or maybe something I didn’t mention.
thanks,
Chris
where do you feel the 7.3 fails in terms of duty cycle? EGT/intercooling duty cycle is the issue with more power or coolant/oil temps? Both? Or maybe something I didn’t mention.
thanks,
Chris
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
What's up everyone,
So I've owned my E99 F350 7.3 for about five years now. It has 223K on it and is a automatic. Only things done to the truck are straight pipe exhaust, intake and TS 6 position chip. Truck does fine with hauling dump trailers, dirt bike's, travel trailer etc., but I would definitely like some more power. We have recently moved to Idaho and purchased a 38ft Toy hauler. I've just recently retired from Law Enforcement and as a present to myself id like to build my E99. I've weighed the option of selling it and buying a new 6.7 but I love my E99 and it has never let me down.
So I am in need of some advise. I want my truck to have more than enough power but still keep its reliability factor. I do know the E99's have some different motor components that are smaller than the L99's (Y pipe/turbo ect). So I'm thinking bigger injectors/HPOP, bigger turbo, lift pump, build the trans, 4 inch turbo back exhaust and a Hydra tuner. - Would I need to upgrade anything else to make these mods happen?
Anyone have an opinion on what I should do for this build? Brands, sizes of parts and anything else anyone could think of that would need to be replaced in order to complete it would be much appreciated!!!
So I've owned my E99 F350 7.3 for about five years now. It has 223K on it and is a automatic. Only things done to the truck are straight pipe exhaust, intake and TS 6 position chip. Truck does fine with hauling dump trailers, dirt bike's, travel trailer etc., but I would definitely like some more power. We have recently moved to Idaho and purchased a 38ft Toy hauler. I've just recently retired from Law Enforcement and as a present to myself id like to build my E99. I've weighed the option of selling it and buying a new 6.7 but I love my E99 and it has never let me down.
So I am in need of some advise. I want my truck to have more than enough power but still keep its reliability factor. I do know the E99's have some different motor components that are smaller than the L99's (Y pipe/turbo ect). So I'm thinking bigger injectors/HPOP, bigger turbo, lift pump, build the trans, 4 inch turbo back exhaust and a Hydra tuner. - Would I need to upgrade anything else to make these mods happen?
Anyone have an opinion on what I should do for this build? Brands, sizes of parts and anything else anyone could think of that would need to be replaced in order to complete it would be much appreciated!!!
Former Vendor
Joined: Sep 2020
Posts: 2,597
Likes: 695
From: Florence, MT
@cleatus12r and @Bitterroot Diesel
where do you feel the 7.3 fails in terms of duty cycle? EGT/intercooling duty cycle is the issue with more power or coolant/oil temps? Both? Or maybe something I didn’t mention.
where do you feel the 7.3 fails in terms of duty cycle? EGT/intercooling duty cycle is the issue with more power or coolant/oil temps? Both? Or maybe something I didn’t mention.
CNCFAB
Joined: Apr 2020
Posts: 4,874
Likes: 2,006
Honestly with the amount of weight you are going to be towing, and the amount it will cost to get the e99 to do it safely and well, I suggest going to a 6.7. To get the e99 beefed up properly and add more power, and make it useable, and long lasting, you would be upwards of $16,000 in parts, easily. It still wont pull that 38’ 5th wheel as well(easily and safely, legally) as a stock 6.7. It will do it, and decently, but nothing like the newer trucks.
I run an e99 f350 srw and pull a 34’ 5th wheel that is about 13k loaded. I have done all sorts of stuff to improve the truck, I would never want to pull anything bigger with it in the mtns.
I run an e99 f350 srw and pull a 34’ 5th wheel that is about 13k loaded. I have done all sorts of stuff to improve the truck, I would never want to pull anything bigger with it in the mtns.
More Turbo
Joined: Oct 2020
Posts: 546
Likes: 261
it’s like chasing your tail. Then you’re on to the next problem. I’m sure engine efficiency is just not what a 6.7 is and a 6.7 would run cooler even if cooling setups are identical.
in my opinion the biggest downfall is the 4 speed trans, I have a T4 setup which can be argued that it is the most efficient 7.3 turbo setup from an EGT perspective and EGTs can still be problematic between the wide rpm drops between gears. The newer trucks are in the right rpm at the right time regardless of speed. My truck has the power to continue to accelerate up grades but when I shift I drop to much rpm and then lose power/airflow and EGTs become an issue.
a 6/10 speed would solve half the problems.