10k Mod
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Junior User
Joined: Jun 2005
Posts: 99
Likes: 0
From: Vancouver, WA
10k Mod
I have had my PS Ex for over a year now, and after reading some of the advice on here decided to do the 10k mod. First let me say... I love it! Could definately feel a little more on the low end and I personally like the rough idle (it kindof 'lopes' like a gasser with a big cam), my wife even likes the sound and the added get up and go! Some have said here that I would see a slight increase in the mileage also.
Now on to my question.... I know that everyone has had their problems with the overhead MPG reader, but up until now mine has seemed to be very accurate (usually within .1-.2 mpg). Now it took a pretty good jump after doing the 10k mod. Should doing this mod effect how the ECM is calculating the mileage??
The mod is pretty new to me, and I haven't had the chance to run through a full tank to calculate by hand.
Now on to my question.... I know that everyone has had their problems with the overhead MPG reader, but up until now mine has seemed to be very accurate (usually within .1-.2 mpg). Now it took a pretty good jump after doing the 10k mod. Should doing this mod effect how the ECM is calculating the mileage??
The mod is pretty new to me, and I haven't had the chance to run through a full tank to calculate by hand.
Thread Starter
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Junior User
Joined: Jun 2005
Posts: 99
Likes: 0
From: Vancouver, WA
Originally Posted by kalsc
It seems odd that these 5K and 10K mods would increase your mileage since these mods trick the system into dumping more fuel.
Elder User
Joined: Nov 2004
Posts: 798
Likes: 0
Originally Posted by Joe98684
I have had my PS Ex for over a year now, and after reading some of the advice on here decided to do the 10k mod. First let me say... I love it! Could definately feel a little more on the low end and I personally like the rough idle (it kindof 'lopes' like a gasser with a big cam), my wife even likes the sound and the added get up and go! Some have said here that I would see a slight increase in the mileage also.
Now on to my question.... I know that everyone has had their problems with the overhead MPG reader, but up until now mine has seemed to be very accurate (usually within .1-.2 mpg). Now it took a pretty good jump after doing the 10k mod. Should doing this mod effect how the ECM is calculating the mileage??
The mod is pretty new to me, and I haven't had the chance to run through a full tank to calculate by hand.
Now on to my question.... I know that everyone has had their problems with the overhead MPG reader, but up until now mine has seemed to be very accurate (usually within .1-.2 mpg). Now it took a pretty good jump after doing the 10k mod. Should doing this mod effect how the ECM is calculating the mileage??
The mod is pretty new to me, and I haven't had the chance to run through a full tank to calculate by hand.
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
In many cases it can increase MPG, mostly depends on your right foot. Around town milage for my truck increased by a little over 1 mpg. I haven't had a chance to really check highway milage yet since I blew up my hpop o-ring on my last trip. My trip meter was reset and I lost the milage. Bleh.
I'll take my best guess on the overhead console, I'm sure Wildbill might chime in since he knows more. Speed, rpm's, and engine load are all taken into consideration when the overhead console projects MPG. Now when you are towing obviously the engine is under a greater load and it shows on the reading. Put in a 10K mod and drive it around, and your foot is not in the pedal as much, so in part I would suspect that the engine is under less of a load and is reflected in the MPG display.
With mine turned on the low setting, my pedal is still very sensitive and just a light touch and I'm off and running. When I flip it off it feels like the engine is trying to work harder, like I've got a load behind me or something.
There's my thought for a penny.
I'll take my best guess on the overhead console, I'm sure Wildbill might chime in since he knows more. Speed, rpm's, and engine load are all taken into consideration when the overhead console projects MPG. Now when you are towing obviously the engine is under a greater load and it shows on the reading. Put in a 10K mod and drive it around, and your foot is not in the pedal as much, so in part I would suspect that the engine is under less of a load and is reflected in the MPG display.
With mine turned on the low setting, my pedal is still very sensitive and just a light touch and I'm off and running. When I flip it off it feels like the engine is trying to work harder, like I've got a load behind me or something.
There's my thought for a penny.
Thread Starter
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Junior User
Joined: Jun 2005
Posts: 99
Likes: 0
From: Vancouver, WA
Originally Posted by Pocket
In many cases it can increase MPG, mostly depends on your right foot. Around town milage for my truck increased by a little over 1 mpg. I haven't had a chance to really check highway milage yet since I blew up my hpop o-ring on my last trip. My trip meter was reset and I lost the milage. Bleh.
I'll take my best guess on the overhead console, I'm sure Wildbill might chime in since he knows more. Speed, rpm's, and engine load are all taken into consideration when the overhead console projects MPG. Now when you are towing obviously the engine is under a greater load and it shows on the reading. Put in a 10K mod and drive it around, and your foot is not in the pedal as much, so in part I would suspect that the engine is under less of a load and is reflected in the MPG display.
With mine turned on the low setting, my pedal is still very sensitive and just a light touch and I'm off and running. When I flip it off it feels like the engine is trying to work harder, like I've got a load behind me or something.
There's my thought for a penny.
I'll take my best guess on the overhead console, I'm sure Wildbill might chime in since he knows more. Speed, rpm's, and engine load are all taken into consideration when the overhead console projects MPG. Now when you are towing obviously the engine is under a greater load and it shows on the reading. Put in a 10K mod and drive it around, and your foot is not in the pedal as much, so in part I would suspect that the engine is under less of a load and is reflected in the MPG display.
With mine turned on the low setting, my pedal is still very sensitive and just a light touch and I'm off and running. When I flip it off it feels like the engine is trying to work harder, like I've got a load behind me or something.
There's my thought for a penny.
Tuned
Joined: Nov 2004
Posts: 444
Likes: 1
From: Nelson, BC, Canada
Well, with an increase in the 'shot', what is meant by that? Increase in volume being shot? I understood that the 5K mod for example tricks the computer into thinking the pressure is dow by about 200psi hence the computer jacks up the pressue to what it thinks it's supposed to be which in turn increase the volume being discharged in the shot, no? If that is the case, then an increase in volume of fuel per shot would mean an increase in fuel usage which in turn means a decrease in fuel economy, no?
Just my $.02
Just my $.02
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Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
Originally Posted by kalsc
Well, with an increase in the 'shot', what is meant by that? Increase in volume being shot? I understood that the 5K mod for example tricks the computer into thinking the pressure is dow by about 200psi hence the computer jacks up the pressue to what it thinks it's supposed to be which in turn increase the volume being discharged in the shot, no? If that is the case, then an increase in volume of fuel per shot would mean an increase in fuel usage which in turn means a decrease in fuel economy, no?
Just my $.02
Just my $.02
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Elder User
Joined: Nov 2004
Posts: 798
Likes: 0
Originally Posted by JOE-M
I lost 1 mpg with the 10k (computer said I gained 8 or so). I have enough low end power so I took it back off after about a month. I kept it in case I want to put it back on someday.
Joe
Joe
Elder User
Joined: Sep 2004
Posts: 851
Likes: 0
From: N. Georgia
The first week, maybe. After the first week I went back to babying it (son says I drive like an old man). I try to drive it for mileage. Bring it up to speed slow and try not to have to slam on the brakes. People hate to follow behind me
Joe
Joe