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far better to just get some cheap bellowed uppipes, gaskets on the old up-pipes usually fail quickly
It's an E99 nothing is cheap for them, but the cheap'er ones I linked the other day have the donut style gasket that the factory pipes use. That's why I mentioned sourcing and linked the correct gaskets from Riff Raff
Your EGT dilemma is almost like you wrote it for me. I fight EGT's towing 10k and going into the wind I have to run in 4th gear ZF6 transmission Bigger turbo, better intake, and chipped. My next next plan is to change the gear ring and pinion from a 3.73 to a 4.10. The truck tows most of the time and want to make a trip to Alaska with less worries.
Your EGT dilemma is almost like you wrote it for me. I fight EGT's towing 10k and going into the wind I have to run in 4th gear ZF6 transmission Bigger turbo, better intake, and chipped. My next next plan is to change the gear ring and pinion from a 3.73 to a 4.10. The truck tows most of the time and want to make a trip to Alaska with less worries.
what turbo are you running? i am looking at upgrading and everything seems to point to a MST for me due to driving style and elevation. I am ZF6 as well so your input is welcome.
Aside from the suggestions made above that are the most impactful, clean out all the heat exchangers in the nose of the truck. Lack of airflow through them, the CAC in particular, can also cause high EGTs.
what turbo are you running? i am looking at upgrading and everything seems to point to a MST for me due to driving style and elevation. I am ZF6 as well so your input is welcome.
Ken
I had a Garret GT turbo installed. 4 inch exhaust, big dry air filter, ts6 tuner. Also had an exhaust brake installed which I really like. I feel like if I can get a better gear ratio for pulling I would have less EGT worries. We are going to Alaska next summer and would prefer not to hear the Edge display going off. Good luck.
Thank you for all the replies,
I got bellowed uppipes, a balanced assembly from kc, and new boots and plenums, currently working on getting them installed and will let you guys know how it fairs pulling the 5th wheel
Thank you for all the replies,
I got bellowed uppipes, a balanced assembly from kc, and new boots and plenums, currently working on getting them installed and will let you guys know how it fairs pulling the 5th wheel
-Jacob
thats pretty much what i just did as well... waiting on the parts to arrive here in Kendiana...
After doing the balanced assembly, disconnecting the wastegate, fixing all the exhaust and boot leaks and using phps 40hp tow tune, I towed my 5th wheel about 2000 miles from New Mexico to New England, the truck and trailer loaded came across the scale at 30klbs. EGTs were never an issue except a few hills they crept up to about 1225ish before coming back down. I was very happy with the trucks performance but felt like I was running out of fuel on the bigger hills and with my foot on the floor HPOP pressure was sitting at around 1800, would only hold 3k if I wasn't on the pedal that hard, I didn't have a way to monitor ipr duty cycle, any recommendations on what to take a look at? or is that normal with the 15 degree pump with stock injectors
Squatting a little bit with 7500lbs on the rear axle
Drop to the PHP 25hp tow tune and you will get some ICP back. I'm towing 16K as well on 33's with 3.73's, and found this tune did the best with stock injectors. PW is still too high in this tune, at 3.8ms, but it's the best I found of PHP's canned tunes and this weight. To get the most out of your setup, there's no substitute for custom tunes.
To get a baseline of your truck's performance, follow the FORScan Q&A thread for what to monitor, and save a CSV of the log when you have pulled the rig several miles, and tackled a few hills.
I strongly recommend investing in an HPOP upgrade.
Do you have a way to watch fuel pressure while underway?
You scaled at 30k total? How'd it feel with that load? Braking?
What boost numbers were you seeing?
As for ICP pressures, you've got a problem. One of a few things usually. O-ring leaks in the injectors, ipr valve or hpop getting old, bad ICP sensor or lpop not keeping up. Or fuel pressure being low, will tax the hpop trying to make up the lost volume of fuel.
If you're gonna keep that load, look into air bags to level out the squat. What trailer is that?
Drop to the PHP 25hp tow tune and you will get some ICP back. I'm towing 16K as well on 33's with 3.73's, and found this tune did the best with stock injectors. PW is still too high in this tune, at 3.8ms, but it's the best I found of PHP's canned tunes and this weight. To get the most out of your setup, there's no substitute for custom tunes.
To get a baseline of your truck's performance, follow the FORScan Q&A thread for what to monitor, and save a CSV of the log when you have pulled the rig several miles, and tackled a few hills.
I strongly recommend investing in an HPOP upgrade.
Do you have a way to watch fuel pressure while underway?
I do not, when I checked it at idle it was good i changed to the middle spring from the frx kit and hutch and harpooned the tank, I was originally in the 25 but the pressure was about the same and I felt I had more power in the 40 but ill switch back next time, unfortunately I wont be pulling it for a while and hopefully never that far again lol
Originally Posted by JoshHefnerX
You scaled at 30k total? How'd it feel with that load? Braking?
What boost numbers were you seeing?
As for ICP pressures, you've got a problem. One of a few things usually. O-ring leaks in the injectors, ipr valve or hpop getting old, bad ICP sensor or lpop not keeping up. Or fuel pressure being low, will tax the hpop trying to make up the lost volume of fuel.
If you're gonna keep that load, look into air bags to level out the squat. What trailer is that?
30,100lbs total and the brakes were great the trailer has brakes on all 3 axles so no issue there, The highest boost I saw was 32psi at 3k RPM but usually id try to cruise at about 2400 where boost was about 20psi, we were moving cross country so everything was in the trailer so I wont be loaded that heavy next time and its a 2021 keystone raptor 423,
I did notice that my ICP plug was wet with oil so ill probably start there but its hard to get it to show as I only see the drop off on hills pulling that trailer
I too run a e99, zf6 , 3.73 gears, 4x4 quad cab, drw that had 80k miles on it in 2012, now 149. I pulled a 34' fiver toyhauler for 10 years with this truck. 12' 4" tall to ac. installed full exh, afe stage 3 intake with dry filter, fuel fx kit raising fuel psi tov65, adrenaline hpop, hybrid 205/30% inj, borgwarner 363/68x .91 exh turbo..... all with the hydra tuner. I have tried php, 1023, jelibuilt as well as aa tunes now. On my sand dune trips, I cross 3 state lines one way. St a dune trips i also cross 3 state lines, Wyoming into Idaho. It is still my opinion the e99 turbo was a good turbo, just didn't breathe well on top end.
if I were to do it over......4:10 or 4:30 gears 3.73 is just too high. kc drop in turbo for e99, cnc or adrenaline hpop and bellowed up pipes. I had my t4 conversion up pipes and exh manifold thermal coated, not worth it imo. I installed a turbo sock on the turbo, I would do it again. Might even consider a larger innercooler but I never tried one.
with a dp tuner and his 80 hp tow tune, 30 psi was max on the stock e99 turbo. Saw 1300 egt pretty easy at those boost levels but that was on hills and in 6th.
at this point in time, php tunes are more powerful then aa but his take off strategies are much better towing a fiver. At 75 mph, Tail wind, 10 mpg on a good day, head wind, 8 mpg on a good day with all my mods. When I say more powerful then aa tunes I mean, php 40 tow tune is equal in feeling to aa 60 hp tow tune.
