Lower EGT's?
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Laughing Gas
Joined: Jan 2005
Posts: 920
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From: Mazon, IL
Lower EGT's?
Just curious. You all talk about having the bigger exhaust lowering egt's. I haven't noticed any reduction, and possibly a 25 degree rise. Is the reduction in egt's only noticed while towing? I mean, the justification for spending the $$$ was better milage and prolonging trhe life of my turbo. I just want to make sure that I don't have some other issue before heading cross country.
Elder User
Joined: Sep 2006
Posts: 852
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From: ARIZONA
before winter set in, regular driving was between 300 to 400 deg.
highway at 65 mph was about 500 to 550 deg.
towing 13K at highway speeds was between 600 to 750 deg.
towing 13K from a dead stop up a slight hill reaching 55 mph was 900 deg.
currently with cold front on,,,,,,,,,,,,in town regular is 400 to 500 deg. and highway is 600 to 650 deg. with average outside temp of 10 deg.
highway at 65 mph was about 500 to 550 deg.
towing 13K at highway speeds was between 600 to 750 deg.
towing 13K from a dead stop up a slight hill reaching 55 mph was 900 deg.
currently with cold front on,,,,,,,,,,,,in town regular is 400 to 500 deg. and highway is 600 to 650 deg. with average outside temp of 10 deg.
Post Fiend
Joined: Jun 2006
Posts: 5,497
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From: Central, Al
Originally Posted by Pocket
If you put on a bigger exhaust and still have higher egt's, something is wrong
My numbers are just under bigtorque's, with the 5" i see about 500-550 at 70 on the interstate.
Post Fiend
Joined: Feb 2006
Posts: 11,892
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From: Middle Tennessee
Originally Posted by dmueller71
Just curious. You all talk about having the bigger exhaust lowering egt's. I haven't noticed any reduction, and possibly a 25 degree rise.
If you just got the system and it is now cold out and you have higher egts, may want to check the EBPV system.
Elder User
Joined: Sep 2006
Posts: 852
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From: ARIZONA
good point tenn..........
my EBPB is on every morning, and man those egts just driving down the road at 30 mph are freaking 600 deg..................heater is nice and toasty though when its zero outside.
my EBPB is on every morning, and man those egts just driving down the road at 30 mph are freaking 600 deg..................heater is nice and toasty though when its zero outside.
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Laughing Gas
Joined: Jan 2005
Posts: 920
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From: Mazon, IL
I say 25 degrees cuz there are little dashes between the hundreds. Yes I have a superchip set at towing perf. I do have a slight exhaust leak at the flange on the drivers side near where the pyro gets tapped in. That was going to be another question today. That flange doesn't look like there's any type of gasket there. It looks like the pipe is just flared and cranked tight to the manifold. What can I do for this? Luckily, even though the bolts are all rusted it looke like they'll be easily replaced as opposed to the old style that are tapped in and snap when you try to pull them. Next question, the EBPV, where is it, what does it look like, what does it do? I did notice yesterday, that even after hitting running temps that I was getting that HISSSS at certain throttle levels. LIke you get first thing in the morn. By the way, EGT's are at about 600+ in town and 750+ at 70. Thank for the insight
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Post Fiend
Joined: Jun 2006
Posts: 9,714
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From: White Mnt's,New Hampshire
Originally Posted by dmueller71
I say 25 degrees cuz there are little dashes between the hundreds. Yes I have a superchip set at towing perf. I do have a slight exhaust leak at the flange on the drivers side near where the pyro gets tapped in. That was going to be another question today. That flange doesn't look like there's any type of gasket there. It looks like the pipe is just flared and cranked tight to the manifold. What can I do for this? Luckily, even though the bolts are all rusted it looke like they'll be easily replaced as opposed to the old style that are tapped in and snap when you try to pull them. Next question, the EBPV, where is it, what does it look like, what does it do? I did notice yesterday, that even after hitting running temps that I was getting that HISSSS at certain throttle levels. LIke you get first thing in the morn. By the way, EGT's are at about 600+ in town and 750+ at 70. Thank for the insight
when you had you down pipe off.you could have looked in to the turbo and seen the EBV....at the base of the turbo in the vally you will see a flat plug with a wire clip on it to lock it in place..its tight in there but you can unlock the clip and pull on the plug..that will disconect the ebv but you will get codes ....id try to clean the tube the EBPS 1st that will make it close up on you when its not sapost to be....
Post Fiend
Joined: Jun 2006
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From: Central, Al
Dmueller Those temps do look a tad high compared to what I see, but keep in mind that just because to needle on the dash goes to the NOT possition the PCM is allowed to controll the EBPV until the Oil Temp reaches 167*F which is quit a while after the gauge moves. jtharvey drove around town for 30 minutes before his warmed up that much.
The EBPV is just inside where you hooked the downpipe to the turbo. there is a small accuating rod on the bottom that connects to the rear to the turbo, they have been known for sticking though.
The Uppipes have crush donuts in them to seal
The EBPV is just inside where you hooked the downpipe to the turbo. there is a small accuating rod on the bottom that connects to the rear to the turbo, they have been known for sticking though.
The Uppipes have crush donuts in them to seal
Cargo Master
Joined: Apr 2004
Posts: 3,162
Likes: 1
From: Vilonia Arkansas
I just pulled the plug on the EBPV this week didn't like the way it kicked in and out or the sound through the straight pipes. It doesn't seem to make to much of a difference in warm up time down here its only been down in the 20's & 30's this week.I know it will throw a code but if that bothers you ,there are code eliminators.
Dave
Dave
Last edited by 1996pwrstrk; Jan 20, 2007 at 07:35 AM. Reason: spelling
Cargo Master
Joined: Apr 2004
Posts: 3,162
Likes: 1
From: Vilonia Arkansas
On those up pipes when we put cookies new engine together he put some kind of high temp copper looking sealant on the pipes then the crush rings I don't think he's had a leak sofar.
Dave
Dave
Freshman User
Joined: Jan 2007
Posts: 47
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From: Christiansburg Va
My egts are at 700 degrees in town and around 900 at 70, they have always been this hot, any Ideas? I am running Hypertech, cold air intake, straight exhaust...Thats not towing and in stage 1 of the programmer
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