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  #11  
Old 06-12-2019, 09:29 AM
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Originally Posted by lincolnlocker View Post
Have you ever pulled the same load prior to now?

live life full throttle
Yeah over a year ago, and I just can't remember what the EGTs were like before. Mileage was definitely better if I remember right. It's awesome how quiet it is, but damn it's gotta be what's making this ole girl run so warm and mileage so bad. I can only get 14 on the highway. Stock tires, stock height, not even leveled.

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  #12  
Old 06-12-2019, 09:37 AM
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Originally Posted by 08Monster View Post
Yeah over a year ago, and I just can't remember what the EGTs were like before. Mileage was definitely better if I remember right. It's awesome how quiet it is, but damn it's gotta be what's making this ole girl run so warm and mileage so bad. I can only get 14 on the highway. Stock tires, stock height, not even leveled.

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Sounds to me like a boost leak. Try a different muffler or go back to straight pipe and see how it does. Do you have a back pressure gauge?

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  #13  
Old 06-12-2019, 09:56 AM
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Quote:
Originally Posted by lincolnlocker View Post
Sounds to me like a boost leak. Try a different muffler or go back to straight pipe and see how it does. Do you have a back pressure gauge?

live life full throttle
I can't hear a boost leak at all, and I'll make 40+psi when I lay into it.

No EBP gauge, the MPD budget kit doesn't have a provision for it. I might pull my passenger side pipe and weld in a bung. I have lots of extra sensors from 15+ swaps anyway.

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  #14  
Old 06-12-2019, 10:08 AM
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Quote:
Originally Posted by 08Monster View Post
I can't hear a boost leak at all, and I'll make 40+psi when I lay into it.

No EBP gauge, the MPD budget kit doesn't have a provision for it. I might pull my passenger side pipe and weld in a bung. I have lots of extra sensors from 15+ swaps anyway.

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You wont hear a boost leak. But id definitely go back to straight pipe and check egts after.

A minor boost leak at light throttle will add to the egt and drop mpg.. Just because it is still running strong up top with 40+ psi doesn't mean it doesn't hinder it at light throttle while cruising.

Im guessing it is the muffler being that is the only thing you changed correct?

With all the crap i have done to my old dually with a 38r on it, i could tell it had a boost leak just by egt and boost reading.

Make a boost leak tester or swap in a straight pipe.

live life full throttle
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00,f350,4x4,cc,drw. Sold... good bye ole girl. I will miss you
15,f350,4x4,cclb, not stock
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  #15  
Old 06-12-2019, 06:49 PM
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May be apples to oranges since I'm running a VGT but...
I run a Jones Turbine 5050XL by itself on my 5" exhaust. Sounds good and no drone in the cab even when towing heavy. Not stock sounding but not loud and annoying either.

Cruising empty 800-850 EGT
Cruising loaded 1000ish EGT

Driving 70 the lie-o-meter reads 16-17mpg and my girl is on the heavy side with a flatbed, tools, 3" lift and 295's.

Pulling my camper (14k) I only get 8mpg or so running 75-80.

Good Luck!
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File Type: jpg 5050XL.jpg (31.8 KB, 35 views)
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  #16  
Old 06-12-2019, 10:16 PM
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Quote:
Originally Posted by farm boy View Post
May be apples to oranges since I'm running a VGT but...
I run a Jones Turbine 5050XL by itself on my 5" exhaust. Sounds good and no drone in the cab even when towing heavy. Not stock sounding but not loud and annoying either.

Cruising empty 800-850 EGT
Cruising loaded 1000ish EGT

Driving 70 the lie-o-meter reads 16-17mpg and my girl is on the heavy side with a flatbed, tools, 3" lift and 295's.

Pulling my camper (14k) I only get 8mpg or so running 75-80.

Good Luck!
I think I should switch to a design like this. A flow through.

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  #17  
Old 06-13-2019, 05:15 AM
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Originally Posted by 08Monster View Post
I think I should switch to a design like this. A flow through.

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Donaldson M085171
  #18  
Old 06-13-2019, 06:58 AM
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Quote:
Originally Posted by sootie View Post
Donaldson M085171
I have 5in

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  #19  
Old 06-13-2019, 12:55 PM
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Just put another turbo on it. She'll quiet down.
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  #20  
Old 06-13-2019, 01:22 PM
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Quote:
Originally Posted by jcain View Post
Just put another turbo on it. She'll quiet down.
You people are bad influences on my rods.

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