High EGT's
Elder User
Joined: Dec 2003
Posts: 658
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From: Wayne, PA
I am wondering if my pyro is reading properly. I have an '02 with the 7.3, afe intake, hypertech stage 3, banks monster exhaust with power elbow, big head waste gate, turbo housing and impeller. My pyro is in the port on the power elbow. My highest egt has been 850. Does this seem correct?
Postmaster
Joined: Jan 2004
Posts: 4,758
Likes: 7
From: colorado
i am not familiar with the banks power elbow, but i am assuming it is the down pipe of the exhaust(pipe comming out of the turbo). if your pyro is mounted there it is post turbo(after the turbo) and the egts will be less than a pre turbo(mounted in the exhaust manifold). pre turbo temp should not exceed 1250 i am not sure about post turbo but i bet someone else here knows
Elder User
Joined: Dec 2003
Posts: 658
Likes: 0
From: Wayne, PA
yes - post turbo. I underandy you loose about 3 across the turbo.
wich meens by preturbo temps are 1150. that was just once towing about 10k. My highest temp is about 700 post turbo without any load.
wich meens by preturbo temps are 1150. that was just once towing about 10k. My highest temp is about 700 post turbo without any load.
Senior User
Joined: Oct 2003
Posts: 394
Likes: 0
From: memphis
wlihntr, I got the western diesel chip in mine but I'm taking it in tomorrow to have it turned down. Thought the EGT's were too high for me. Plenty of power around town but pulling that horse trailer of mine, I'll be in the 1200+ range constantly. I had the Hypertech Programer, notice I said had, but the only thing it did was create a black cloud behind me. I gave it away! Western Diesel is real proud of their stuff but I guess in the long run it's worth the cost.
Junior User
Joined: Jan 2004
Posts: 65
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From: Colorado
These are just my opinions so take them with a grain of salt. As far as the pre and post pyro discussion, at first I had mine post turbo and the highest EGT's I ever saw was 900. After moving it to pre-turbo I could bury the EGT"s (1600 degrees), in my opinion if you have the probe mounted post-turbo you really don't know what the temps are. The post turbo readings where very slow to change where as pre-turbo is almost instantly, and since the main reason to monitor the EGT's is for the safety of the turbo I suggest mounting it pre-turbo. I had a "99" that I did the zoodad mod on. Living in Colorado, we get snow and cold in the winter. I was stranded once in a very cold and snowy blizzard because the air intake was packed full of snow and ice all the way to the turbo. The air filter was packed full and frozen solid, so if you do this mod I suggest you make provisions to cover the cut out opening during hard rain or snow storms. I personally never saw a gain by doing the mod which I had done to get more air in the intake. There has been a forum on the diesel stop where the question is on going suggesting this mod may actually be cutting down the amount of air due to turbulance. Is this true or not? I don't know but it's something else to think about.
Fleet Mechanic
Joined: Aug 2003
Posts: 1,780
Likes: 98
From: Phoenix, AZ
I just did the Zoodad. Cut out the plastic with a Dremel.
Went to Lowe's and found a 4" x 11" home heating vent cover that had the a really thin aluminum frame, angled lovers plus 1/8" mesh behind it.
Cut the length down, drilled small holes in the frame and the plastic, screwed in with 1/2", #10 sheet metal screws.
Not able to report any mpg, egt or performance difference at this point, haven't had a real chance to check it out long term. I have seen where the fine mesh has caught a few bugs already and I have an aftermarket mesh type grill installed as well.
Went to Lowe's and found a 4" x 11" home heating vent cover that had the a really thin aluminum frame, angled lovers plus 1/8" mesh behind it.
Cut the length down, drilled small holes in the frame and the plastic, screwed in with 1/2", #10 sheet metal screws.
Not able to report any mpg, egt or performance difference at this point, haven't had a real chance to check it out long term. I have seen where the fine mesh has caught a few bugs already and I have an aftermarket mesh type grill installed as well.
Thread Starter
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Senior User
Joined: Feb 2003
Posts: 207
Likes: 0
A screening material is next on the list of to do's to keep out the bugs. It's still cold enough that there aren't a lot of bugs flying yet, but it won't be long.
I didn't run any duct work, and was hoping that the majority of moisture wouldn't make it all the way through the gap. I'll check on that the next heavy rain we have. If it's bad, I'll have to figure out a door to cut it off during bad weather.
I didn't run any duct work, and was hoping that the majority of moisture wouldn't make it all the way through the gap. I'll check on that the next heavy rain we have. If it's bad, I'll have to figure out a door to cut it off during bad weather.
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Fleet Mechanic
Joined: Aug 2003
Posts: 1,780
Likes: 98
From: Phoenix, AZ
I didn't duct it to the intake either.
I have the AIS Severe Duty intake and the intake horn tapers down to the tip. I'm presuming that what little moisture or rain that could be drawn into the intake may not make it because of the taper? Not sure, haven't run in the rain yet.
i think a door would be simple enough, you can raise the rubber cover flap that's on top and slide some kind of door or cut off there.
I have the AIS Severe Duty intake and the intake horn tapers down to the tip. I'm presuming that what little moisture or rain that could be drawn into the intake may not make it because of the taper? Not sure, haven't run in the rain yet.
i think a door would be simple enough, you can raise the rubber cover flap that's on top and slide some kind of door or cut off there.
Senior User
Joined: Oct 2003
Posts: 394
Likes: 0
From: memphis
Had ol'gray gelded today. The WD chip was at 80 hp. Next step was 40. I had the 40 put back in and the EGT dropped alot. I know if I pull that monster of mine the EGT's will be ok. Took about 10 minutes to do. Sure liked the thump she had but the trucks for pull'in.
Was sitting on 9.5 at 75mph, now it's sitting on 6.5 at 75. I'm happy. Hell, I'm always happy. *Hickup!*
Was sitting on 9.5 at 75mph, now it's sitting on 6.5 at 75. I'm happy. Hell, I'm always happy. *Hickup!*
Last edited by horsecop; Feb 23, 2004 at 07:42 PM.
Thread Starter
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Senior User
Joined: Feb 2003
Posts: 207
Likes: 0
Horsecop,
Sorry to hear about gray
I know you'll miss the power. There is a pretty big difference in EGT's between the 40hp and 60hp Predator tunes in my truck. Luckily I have the ability to turn it down to 40hp or no tune at all. I still can't figure out who out there can safely run the 85hp and 100hp tunes. It's got to be people that didn't heed the warnings and install gauges.
I imagine there's a lot of turbos out there frying and the owner is no wiser until it's too late. Spinning tires is fun, but not that much fun.
Dieselsmoke,
you may be right about worrying too much, but I have a lot of company. Maybe when Ed Mcmahon drops by my house, I'll put it on 100hp and dare it to meltdown.
Sorry to hear about gray
I know you'll miss the power. There is a pretty big difference in EGT's between the 40hp and 60hp Predator tunes in my truck. Luckily I have the ability to turn it down to 40hp or no tune at all. I still can't figure out who out there can safely run the 85hp and 100hp tunes. It's got to be people that didn't heed the warnings and install gauges.
I imagine there's a lot of turbos out there frying and the owner is no wiser until it's too late. Spinning tires is fun, but not that much fun.
Dieselsmoke,
you may be right about worrying too much, but I have a lot of company. Maybe when Ed Mcmahon drops by my house, I'll put it on 100hp and dare it to meltdown.
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
I still can't figure out who out there can safely run the 85hp and 100hp tunes. It's got to be people that didn't heed the warnings and install gauges.
Diablo stuff has historically run higher EGT's than most everyone else, judging from this post it dosen't look as though that has changed too much. But all is not lost, you can make brief stints to well past 1250 and not hurt anything.
Just my opinion of course.
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Senior User
Joined: Feb 2003
Posts: 207
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Cookie88,
Disregard the last message. I just looked in your gallery. Tell me a little more about the disabled wastegate and deleted backpressure valve. Would this help w/ EGT's? What else do you have that helps keep the temps down? How safe are these mods and can a shadetree guy do them theirself?
Disregard the last message. I just looked in your gallery. Tell me a little more about the disabled wastegate and deleted backpressure valve. Would this help w/ EGT's? What else do you have that helps keep the temps down? How safe are these mods and can a shadetree guy do them theirself?