Need help with EGTs
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Senior User
Joined: Dec 2003
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From: Las Vegas
Need help with EGTs
I live at 2100ft elevation and in the summer it gets pretty hot (110-120). I have a 6.0 with a 4" cat-back and a Quadzilla 160hp module. Here is the problem, I get 1200-1250 degrees Egts while running stock full throttle with no load very easy. If I add any power I can get the gauge up past 1300 pretty fast.
Question is what would the next mod be to help lower EGTs? Would a AFE intake help any? Do I need a larger intercooler? Do I need to install a turboback intsead of the cat-back? Are there other modules/tuners that run cooler than others?
Any help would be appreciated.
Mark
Question is what would the next mod be to help lower EGTs? Would a AFE intake help any? Do I need a larger intercooler? Do I need to install a turboback intsead of the cat-back? Are there other modules/tuners that run cooler than others?
Any help would be appreciated.
Mark
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From: Abilene TX
There really should be no reason why you are approaching 1250 on the EGT's running stock?????? Unless you are just being plain brutal on you truck. Something you might want to check into. Having said that, the best way to reduce your EGT's especially with that extreme a chip is to get an open air intake or some other type of high flow set up and change your downpipe to 4"and go all the way back with it. There is some debate as far as whether a 3.5 is better than a 4. The 4" dp seems to exhibit some turbo lag on the bottom end, but redeems itself in the mid and upper ranges. With a 160 hp chip, I would suggest 4". If that does'nt keep the EGT's in check and assuming there is nothing else wrong with the truck, you might consider a water injection system. Most of the competition pullers run water.... This entire post is assuming you are running your probe pre turbo. If not, I would take all your stuff out of it and call Ford to come get it.
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From: 3rd Rock
Originally Posted by VegasSuperDuty
Thank you for the reply!
I have the probe in the exhaust manifold. I can get 1200 flooring it up a freeway onramp and by the time 75-80 hits I am at 1200 (stock setting).
I have the probe in the exhaust manifold. I can get 1200 flooring it up a freeway onramp and by the time 75-80 hits I am at 1200 (stock setting).
Check out my gallery, it has an open intake in it.
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From: Las Vegas
Originally Posted by Tim Lamkin
You need a pre tubo EGT reading.IMO
Are you saying that having my probe in the exhaust manifold is causing my reading to be too high? If I see 1200 at the manifold what do you think the temp is right before the turbo?
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From: 3rd Rock
Originally Posted by VegasSuperDuty
Are you saying that having my probe in the exhaust manifold is causing my reading to be too high? If I see 1200 at the manifold what do you think the temp is right before the turbo?
Sorry I though it was in the down pipe
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From: CA
Originally Posted by VegasSuperDuty
Thank you for the reply!
I have the probe in the exhaust manifold. I can get 1200 flooring it up a freeway onramp and by the time 75-80 hits I am at 1200 (stock setting).
I have the probe in the exhaust manifold. I can get 1200 flooring it up a freeway onramp and by the time 75-80 hits I am at 1200 (stock setting).
.. Probe pre turbo in ex/manifold.. Elevation isn't much here though, 500 ft. or so, but the temp has been in the high 80'-low 90's here when tested..
Last edited by Hayapower!; Jun 16, 2004 at 02:47 PM.
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From: CA
[QUOTE=VegasSuperDuty]
No.. Not really.. But, a good Diesel Injection Service Shop can run a pyrometer tester on your gauge/install to check for accuracy without removing everything..
What brand of gauge are you using?? Here's some posts of 'other' owners, with Isspro gauges with mis-readings.. I had 'previously' purchased an Auto Meter EGT, (not to slam any product) and noticed before the install that if 'bumped' slightly the needle would vary by 50-100 degree's.. Not the accuraccy I'm looking for.. Probably just a bad gauge.. Can happen.. Now I'm running the Isspro!! But seems to be reading OK....http://www.turbodieselregister.com/f...pic/31798.html
Originally Posted by Hayapower!
Are you absolutely 'sure' of the accuracy of the gauge you are running..(what man.) QUOTE]
The only way to tell is to switch gauges and probes.
The only way to tell is to switch gauges and probes.
What brand of gauge are you using?? Here's some posts of 'other' owners, with Isspro gauges with mis-readings.. I had 'previously' purchased an Auto Meter EGT, (not to slam any product) and noticed before the install that if 'bumped' slightly the needle would vary by 50-100 degree's.. Not the accuraccy I'm looking for.. Probably just a bad gauge.. Can happen.. Now I'm running the Isspro!! But seems to be reading OK....http://www.turbodieselregister.com/f...pic/31798.html
More Turbo
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From: Fairbanks, AK
ARGGGHHH!!! 
I can't believe you linked us to a Dodge site. Just kidding 
I have looked here also and found some good diesel info. I am still deciding what guages to buy for my truck and have wondered about the accuracy of the different brands. Could you use a infrared thermometer (Raytek Portable Infrared Thermometers ) to measure the temp of the probe location to compare it to the guage reading? If mounted in the manifold, I guess the probe could be seeing higher exhaust temps than the outside of the manifold itself, but it might be accurate at an idle.
I have been looking at these thermometers for other uses on my vehicle also. I thought of checking the trailer brake drum, trailer hub, and tire temps for problems that could be indicated by irregular temperatures. Most importantly, you could check injector condition my measuring the temps of each individual cylinder head location, looking for a weak (cooler) cylinder. It could also be used to check coolant thermostat opening temps. Not to mention the fun uses around the house, like frying pan temp or heat loss through windows and walls. The inexpensive models good to 525°F are less than $100, but the higher temp models (up to 1400°F) are about $300-$500.
I can't believe you linked us to a Dodge site. Just kidding I have looked here also and found some good diesel info. I am still deciding what guages to buy for my truck and have wondered about the accuracy of the different brands. Could you use a infrared thermometer (Raytek Portable Infrared Thermometers ) to measure the temp of the probe location to compare it to the guage reading? If mounted in the manifold, I guess the probe could be seeing higher exhaust temps than the outside of the manifold itself, but it might be accurate at an idle.I have been looking at these thermometers for other uses on my vehicle also. I thought of checking the trailer brake drum, trailer hub, and tire temps for problems that could be indicated by irregular temperatures. Most importantly, you could check injector condition my measuring the temps of each individual cylinder head location, looking for a weak (cooler) cylinder. It could also be used to check coolant thermostat opening temps. Not to mention the fun uses around the house, like frying pan temp or heat loss through windows and walls. The inexpensive models good to 525°F are less than $100, but the higher temp models (up to 1400°F) are about $300-$500.
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From: 3rd Rock
Originally Posted by Twin Tritons
ARGGGHHH!!! I can't believe you linked us to a Dodge site. Just kidding I have looked here also and found some good diesel info. I am still deciding what guages to buy for my truck and have wondered about the accuracy of the different brands. Could you use a infrared thermometer (Raytek Portable Infrared Thermometers ) to measure the temp of the probe location to compare it to the guage reading? If mounted in the manifold, I guess the probe could be seeing higher exhaust temps than the outside of the manifold itself, but it might be accurate at an idle.
I have been looking at these thermometers for other uses on my vehicle also. I thought of checking the trailer brake drum, trailer hub, and tire temps for problems that could be indicated by irregular temperatures. Most importantly, you could check injector condition my measuring the temps of each individual cylinder head location, looking for a weak (cooler) cylinder. It could also be used to check coolant thermostat opening temps. Not to mention the fun uses around the house, like frying pan temp or heat loss through windows and walls. The inexpensive models good to 525°F are less than $100, but the higher temp models (up to 1400°F) are about $300-$500.
I can't believe you linked us to a Dodge site. Just kidding I have looked here also and found some good diesel info. I am still deciding what guages to buy for my truck and have wondered about the accuracy of the different brands. Could you use a infrared thermometer (Raytek Portable Infrared Thermometers ) to measure the temp of the probe location to compare it to the guage reading? If mounted in the manifold, I guess the probe could be seeing higher exhaust temps than the outside of the manifold itself, but it might be accurate at an idle.I have been looking at these thermometers for other uses on my vehicle also. I thought of checking the trailer brake drum, trailer hub, and tire temps for problems that could be indicated by irregular temperatures. Most importantly, you could check injector condition my measuring the temps of each individual cylinder head location, looking for a weak (cooler) cylinder. It could also be used to check coolant thermostat opening temps. Not to mention the fun uses around the house, like frying pan temp or heat loss through windows and walls. The inexpensive models good to 525°F are less than $100, but the higher temp models (up to 1400°F) are about $300-$500.
The delta would be enough....it could not be comparable
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Senior User
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From: Las Vegas
Originally Posted by Hayapower!
No.. Not really.. But, a good Diesel Injection Service Shop can run a pyrometer tester on your gauge/install to check for accuracy without removing everything..
What brand of gauge are you using?? Here's some posts of 'other' owners, with Isspro gauges with mis-readings.. I had 'previously' purchased an Auto Meter EGT, (not to slam any product) and noticed before the install that if 'bumped' slightly the needle would vary by 50-100 degree's.. Not the accuraccy I'm looking for.. Probably just a bad gauge.. Can happen.. Now I'm running the Isspro!! But seems to be reading OK....http://www.turbodieselregister.com/f...pic/31798.html
What brand of gauge are you using?? Here's some posts of 'other' owners, with Isspro gauges with mis-readings.. I had 'previously' purchased an Auto Meter EGT, (not to slam any product) and noticed before the install that if 'bumped' slightly the needle would vary by 50-100 degree's.. Not the accuraccy I'm looking for.. Probably just a bad gauge.. Can happen.. Now I'm running the Isspro!! But seems to be reading OK....http://www.turbodieselregister.com/f...pic/31798.html
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Joined: Feb 2004
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From: CA
Originally Posted by VegasSuperDuty
I am running ISSPRO gauges, so you say it could be a bad gauge?
Possible..
Sounds as if 'some' of the gauges/amplifiers aren't calibrated correctly.. But a 'manual' check would confirm your concerns.. The leadwire was not altered at all, and is Isspro as well as the thermo.. correct?.. Hard to believe you'd see those kinds of temps, with a cat back, in stock tune.. As a first step.. I'd give Isspro a call, 'or' the vendor where you purchased them and see what they recommend.. Maybe they'll send you another unit, or have more insite..
Sorry about the Dodge Link..Kinda like 'weeing' on Superman's cape.. Could be worse though, could'a been to the Asian Diesel guys!!
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From: Las Vegas
Originally Posted by Hayapower!
Possible..
Sounds as if 'some' of the gauges/amplifiers aren't calibrated correctly.. But a 'manual' check would confirm your concerns.. The leadwire was not altered at all, and is Isspro as well as the thermo.. correct?.. Hard to believe you'd see those kinds of temps, with a cat back, in stock tune.. As a first step.. I'd give Isspro a call, 'or' the vendor where you purchased them and see what they recommend.. Maybe they'll send you another unit, or have more insite..
Sorry about the Dodge Link..Kinda like 'weeing' on Superman's cape.. Could be worse though, could'a been to the Asian Diesel guys!!
Sounds as if 'some' of the gauges/amplifiers aren't calibrated correctly.. But a 'manual' check would confirm your concerns.. The leadwire was not altered at all, and is Isspro as well as the thermo.. correct?.. Hard to believe you'd see those kinds of temps, with a cat back, in stock tune.. As a first step.. I'd give Isspro a call, 'or' the vendor where you purchased them and see what they recommend.. Maybe they'll send you another unit, or have more insite..
Sorry about the Dodge Link..Kinda like 'weeing' on Superman's cape.. Could be worse though, could'a been to the Asian Diesel guys!!
Thanks for the help.