First time towing after mods
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First time towing after mods
I hooked up my trailer -- about 8000lbs the way I had it loaded today -- and went out for a test ride.
The main thing that suprised me was that on long hauls up hills, even with the flip chip in the stock position, I would get into trouble with the EGT's. I never let it go over 1200, but it would have gone that way had I stayed into it.
Would you expect that to happen?
How much difference in EGT's does an intercooler make? Is it like 100's or 10's degrees i difference over not having one?
Thanks,
wRichard
The main thing that suprised me was that on long hauls up hills, even with the flip chip in the stock position, I would get into trouble with the EGT's. I never let it go over 1200, but it would have gone that way had I stayed into it.
Would you expect that to happen?
How much difference in EGT's does an intercooler make? Is it like 100's or 10's degrees i difference over not having one?
Thanks,
wRichard
Last edited by whiskeyrichard; Mar 11, 2007 at 09:47 PM.
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From: AZ
I wish I had gauges before I started changing everything. I had my truck with stock injectors and the chip pulled from the pcm, WITH 4" exhaust and 6637 intake reach 1400 degrees pulling a 6% grade (horse trailer w/ 4 horses = ~9000lbs) . I had to back out of it and feather the throttle to get 1200-1300*. I wonder what it reached with the stock exhaust and stock air filter. I think 1250* is a little low, but it is a conservative # that keeps you on the edge when temps get that high. With larger injectors it is crazy how fast the egts go up. I have seen 1500* EMPTY, just messing around.
I have heard that an intercooler should decrease your temps by 150-200*. The 6.0 intercooler is a little better (by maybe 50*) than the 7.3s
I have heard that an intercooler should decrease your temps by 150-200*. The 6.0 intercooler is a little better (by maybe 50*) than the 7.3s
Mountain Pass
Joined: Dec 2003
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From: Loudoun, Va
Originally Posted by whiskeyrichard
I hooked up my trailer -- about 8000lbs the way I had it loaded today -- and went out for a test ride.
The main thing that suprised me was that on long hauls up hills, even with the flip chip in the stock position, I would get into trouble with the EGT's. I never let it go over 1200, but it would have gone that way had I stayed into it.
Would you expect that to happen?
How much difference in EGT's does an intercooler make? Is it like 100's or 10's degrees i difference over not having one?
Thanks,
wRichard
The main thing that suprised me was that on long hauls up hills, even with the flip chip in the stock position, I would get into trouble with the EGT's. I never let it go over 1200, but it would have gone that way had I stayed into it.
Would you expect that to happen?
How much difference in EGT's does an intercooler make? Is it like 100's or 10's degrees i difference over not having one?
Thanks,
wRichard
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I have stock injectors as well.
The mods to my truck are:
4 pos chip (stock, +50, +100, high idle)
4 inch exhaust
3.5 to 4 down pipe
tymar intake
Is it possible that if I went to a different chip (I can get my current one reburned with a different tuners programs) that I may be able to get the EGT's lower?
I was pretty suprise to see how high the EGT's went and how fast they went there. It really only happens when going up hills, but since I live in northern california, I am either going up hills or down hills most all the time.
WR
The mods to my truck are:
4 pos chip (stock, +50, +100, high idle)
4 inch exhaust
3.5 to 4 down pipe
tymar intake
Is it possible that if I went to a different chip (I can get my current one reburned with a different tuners programs) that I may be able to get the EGT's lower?
I was pretty suprise to see how high the EGT's went and how fast they went there. It really only happens when going up hills, but since I live in northern california, I am either going up hills or down hills most all the time.
WR
Mountain Pass
Joined: Dec 2003
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From: Loudoun, Va
I'm not sure whether a different chip would lower egt's but I would think that there are differences in programming between the different makes. Mine is a TS 6 pos w/ stock, high idle, 50,75,100, and 140+. Right now my truck performs the best on the 100 setting, though I usually leave it stock or 50. When I tow I am am pulling anywhere from 6-10K depending on the load size. Even if I leave the chip in 100 or 140 my egt's max out at 1200. The mountain I pull is about 1mi long and I have to drop to 3rd gear (35-40mph).
I am surprised to see difference in egt's as we basically have the same mods. I have gotten rid of my ebpv and switched to a 1.00 housing.. maybe thats something?
I'd be interested to hear other views of our situation.
I am surprised to see difference in egt's as we basically have the same mods. I have gotten rid of my ebpv and switched to a 1.00 housing.. maybe thats something?
I'd be interested to hear other views of our situation.
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IMHO the wide swings in EGT's may be the location of the pyro probe. It needs to be in an exaust manifold prior to the turbo near the collector. I placed mine in the drivers side manifold 4" before the collector pipe and I have to be towing to go over my 1250 limit but I can do it easily when towing.
I would be very interested to know the answer to Whiskeyriver's original question: how much cooler does an intercooler (charge air cooler) make the EGT's?
I would be very interested to know the answer to Whiskeyriver's original question: how much cooler does an intercooler (charge air cooler) make the EGT's?
Posting Guru
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From: AZ
Whos tunes do you have?
How much boost are you getting?
I have noticed with my truck I usually see 50-100* cooler egts when in my 40 hp tow program compared to stock. It is because there is more boost in the tow program (15psi vs. 10 for example).
97-7.3dump are you talking about pre and post turbo? If whiskeyrichard had it post turbo and was seeing 1300* that would be close to 1600-1700* pre turbo.
From earlier post
" I have heard that an intercooler should decrease your temps by 150-200*. The 6.0 intercooler is a little better (by maybe 50*) than the 7.3s"
How much boost are you getting?
I have noticed with my truck I usually see 50-100* cooler egts when in my 40 hp tow program compared to stock. It is because there is more boost in the tow program (15psi vs. 10 for example).
97-7.3dump are you talking about pre and post turbo? If whiskeyrichard had it post turbo and was seeing 1300* that would be close to 1600-1700* pre turbo.
From earlier post
" I have heard that an intercooler should decrease your temps by 150-200*. The 6.0 intercooler is a little better (by maybe 50*) than the 7.3s"
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FormanES, I am talking pre-turbo in the manifold. That way you know the enviroment the turbo is living in!
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This is going to sounds crazy, but for the life of me I cannot remember that software that I had installed on my chip.
At the recommendation of Dale Isley, I choose between two different tuners, but I'll be damned if I cannot remember who/what they were. I am pretty sure the programs (4 of them) I picked were from somebody that started with a T. I'll have to call Dale and find out what I bought. Kinda a dumb *** move, but oh well.
My EGT guage is where it is supposed to be, in the exhaust manifold.
I talked to Dale today and was asking about the EGT's. I told him I was towing in higher gears at lower RPM's. He told me to down shift and drop a few MPH and the EGT's should come down some.
I am looking at either getting an intercooler or a boost cooler. I have questions about the boost cooler, but am going to start a new thread about that.
WR
At the recommendation of Dale Isley, I choose between two different tuners, but I'll be damned if I cannot remember who/what they were. I am pretty sure the programs (4 of them) I picked were from somebody that started with a T. I'll have to call Dale and find out what I bought. Kinda a dumb *** move, but oh well.
My EGT guage is where it is supposed to be, in the exhaust manifold.
I talked to Dale today and was asking about the EGT's. I told him I was towing in higher gears at lower RPM's. He told me to down shift and drop a few MPH and the EGT's should come down some.
I am looking at either getting an intercooler or a boost cooler. I have questions about the boost cooler, but am going to start a new thread about that.
WR