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Old 11-11-2013, 11:58 AM
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need help with egt's while pulling

Lets try again. Since my last post was hard to read. My truck is a 99 F350 swd cc with 300k miles. This past spring I replaced injectors,turbo and chip. New injectors Alliant 75 hp,turbo is Garrett Power Max, TS 6 position chip HI,stock,50,75,100 and 140. S&B intake,MBRP 4" and ccv mod already done.HPOP is not original but know anything other than that about it.I pull a 40' toyhauler FW,dry it weighs around 14k. When driving on relative flat ground to a slight increase in grade my EGTs will hit 1200 in 4th gear just to keep speed around 40. With the position on the chip @50. It seems like the truck hits a wall. I thought that it should be able to do a better job at pulling that weight. I love the truck and want to be able to do a better job at pulling the camper. Any ideas or thoughts? Thanks

Last edited by wattser322; 11-11-2013 at 04:15 PM.
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Old 11-11-2013, 12:39 PM
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Ugh...

Find the period button. Find the shift key... That's painful to read.

What are 75 over injectors? Find out what CC and nozzle size they have. 75 over means dick.

Who's tuning on the TS "tuner" (assuming this is a TS chip)?

Everything didnt get upgraded... You threw larger injectors at a turbo that is nearly too small to begin with. You dont mention if you have intake or exhaust mods? You dont mention if you have a manual or auto...

Your running a stock HPOP with 300k on it, it might be fine, it might not be...
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Old 11-11-2013, 06:41 PM
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Are the injectors single shot or split shot? If single shot, do you have the correct tuning?
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Old 11-11-2013, 07:48 PM
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They are single shot. I was thinking of maybe intercooler as well. Thanks Joel
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Old 11-11-2013, 07:57 PM
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intercooler gives minimal cooling beneits.

whos tuning are you running?

and did you install 160/80's or a different stage 2 injector
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Old 11-11-2013, 08:01 PM
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If they are single shot on canned tunes, the trucks gonna run horrible. Crappy idle too.

Sent from AutoGuide.com Free App
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Old 11-12-2013, 04:49 AM
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Is this "50" tune a towing tune or just a canned tune? Might be too hot to be towing over 14k. Most tunes I have seen, the greater the towed load the lower the hp level. There is a reason there are "HP" tunes and "Towing" tunes.

Since you report you are in 4th gear at 40mph, I'm hoping you are talking about a 6 speed manual? What RPMs are you at?

Last edited by Solid98; 11-12-2013 at 04:53 AM.
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Old 11-12-2013, 07:33 AM
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Quote:
Originally Posted by wattser322 View Post
Lets try again. Since my last post was hard to read. My truck is a 99 F350 swd cc with 300k miles. This past spring I replaced injectors,turbo and chip. New injectors Alliant 75 hp,turbo is Garrett Power Max, TS 6 position chip HI,stock,50,75,100 and 140. S&B intake,MBRP 4" and ccv mod already done.HPOP is not original but know anything other than that about it.I pull a 40' toyhauler FW,dry it weighs around 14k. When driving on relative flat ground to a slight increase in grade my EGTs will hit 1200 in 4th gear just to keep speed around 40. With the position on the chip @50. It seems like the truck hits a wall. I thought that it should be able to do a better job at pulling that weight. I love the truck and want to be able to do a better job at pulling the camper. Any ideas or thoughts? Thanks
Thanks for the edit... It doesnt have to be perfect, just readable.

Alliant doesnt make a 75hp injector... Find out EXACTLY what kind of injector it is. I suspect you bought new AC injectors which are 160/0 injectors.

What is your max boost?

What are your ICP pressures and duty cycles?

What is your fuel pressure under load?

What trans are you running?

Are you lifted or stock height?

Have you tried down shifting? When towing heavy the best way to bring down EGT's is to downshift and bring the RPM's up. It's nothing to tow with a 7.3 at 2600-2800 RPM's.

Sounds to me like your lugging the motor.
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Old 11-12-2013, 11:26 AM
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If this is an auto, I would NOT be in 4th gear at 40 mph at all. 45-55 mph is a nice place for third gear with OD locked out.

14k# fifth wheel is a huge wind load and a heavy weight. It won't be fast.
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