High Altitude really high reail pressure smarty - Dodge Cummins Diesel Forum
3rd Gen. Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING

 2Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old 07-21-2019, 08:34 PM Thread Starter
Diesel Freak
 
Kmehr's Avatar
 
Join Date: Sep 2014
Location: Colorado Springs
Posts: 524
Thanks: 26
Thanked 22 Times in 22 Posts
iTrader Score: 0 reviews
High Altitude really high reail pressure smarty

I've seen a few threads on this but they never seemed to come to a conclusion. I'm running a Smarty Sr on 90hp tune. I live at about 6300ft and everything runs fine. When I'm up really high in the mountains though, mostly around 8500+ ft, my rail pressure goes the way of the super high and stays there even at low loads. It pegs at 25.8K and will stay there even on really low loads. There is some increased rattle/knock as well when this is going on. Definitely feels down on power, but I expect this at altitude. Turbo spool is pretty poor and I can black out a highway if i try to pull out into traffic in second and try to get on it.

Anyone have any ideas? I've haven't had a chance to put it back to stock, but I'm not going to go up that high for a few more weeks.


1984 Dodge CCSB P-pump NV4500- SOLD
2005 QCSB NV5600, SouthBend OKHD, CFM+, Jake brake, Thuren 3in, Steering brace, Synergy Track Bar, Vulcan 3 micron w/ CAT UHE 416-1225, CTS2 Insight, Smarty S06
Kmehr is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 07-21-2019, 08:52 PM
Diesel Head
 
the man in black's Avatar
 
Join Date: Nov 2014
Location: Blowhio
Posts: 3,358
Thanks: 3,904
Thanked 3,418 Times in 2,492 Posts
iTrader Score: 0 reviews
Everything but the high rail sounds normal. Did your pressure go back when you went down in altitude?

Scooty Puff Sr - 2016 3500 CCLB
Truckasaurus - 2010 2500 CCSB -sold
the man in black is offline  
post #3 of 16 (permalink) Old 07-21-2019, 09:04 PM Thread Starter
Diesel Freak
 
Kmehr's Avatar
 
Join Date: Sep 2014
Location: Colorado Springs
Posts: 524
Thanks: 26
Thanked 22 Times in 22 Posts
iTrader Score: 0 reviews
It did. Once back lower everything returned to normal.

1984 Dodge CCSB P-pump NV4500- SOLD
2005 QCSB NV5600, SouthBend OKHD, CFM+, Jake brake, Thuren 3in, Steering brace, Synergy Track Bar, Vulcan 3 micron w/ CAT UHE 416-1225, CTS2 Insight, Smarty S06
Kmehr is offline  
Sponsored Links
Advertisement
 
post #4 of 16 (permalink) Old 07-21-2019, 09:05 PM
Diesel Head
 
the man in black's Avatar
 
Join Date: Nov 2014
Location: Blowhio
Posts: 3,358
Thanks: 3,904
Thanked 3,418 Times in 2,492 Posts
iTrader Score: 0 reviews
Everything sounds normal. Except for the rail. That's odd.

Scooty Puff Sr - 2016 3500 CCLB
Truckasaurus - 2010 2500 CCSB -sold
the man in black is offline  
post #5 of 16 (permalink) Old 07-21-2019, 09:16 PM
TECH SPECIALIST
 
steve05ram360's Avatar
 
Join Date: Jun 2006
Posts: 9,992
Thanks: 515
Thanked 1,365 Times in 994 Posts
iTrader Score: 3 reviews
Go back to stock and repeat... Hook up a scan tool to it and look at the baro sensor tk ensure it is working ok

AFE PG7 drop in filter, AFE Torque Tube, HTT 2.5 turbo, AFE e-mani, ATS Arc Flo, 50HP DDP , 415k, HPTuners, G56, 25.065 mpg, mpg threads ->
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
steve05ram360 is offline  
post #6 of 16 (permalink) Old 07-21-2019, 11:33 PM Thread Starter
Diesel Freak
 
Kmehr's Avatar
 
Join Date: Sep 2014
Location: Colorado Springs
Posts: 524
Thanks: 26
Thanked 22 Times in 22 Posts
iTrader Score: 0 reviews
Definitely will be returning to stock before the next trip.

I’ve got it set to all defaults and realize there is a “stock” railpressure setting that can be selected. Maybe that’s what I need to run since I get up to that altitude once or twice a month camping.


Sent from my iPhone using Tapatalk

1984 Dodge CCSB P-pump NV4500- SOLD
2005 QCSB NV5600, SouthBend OKHD, CFM+, Jake brake, Thuren 3in, Steering brace, Synergy Track Bar, Vulcan 3 micron w/ CAT UHE 416-1225, CTS2 Insight, Smarty S06
Kmehr is offline  
post #7 of 16 (permalink) Old 07-22-2019, 03:20 PM
TECH SPECIALIST
 
steve05ram360's Avatar
 
Join Date: Jun 2006
Posts: 9,992
Thanks: 515
Thanked 1,365 Times in 994 Posts
iTrader Score: 3 reviews
why wait until the next trip... analyze now and know the system is working properly. look at the baro sensor and know that it measures your altitude correctly, then measures it at the camp site correctly as well

AFE PG7 drop in filter, AFE Torque Tube, HTT 2.5 turbo, AFE e-mani, ATS Arc Flo, 50HP DDP , 415k, HPTuners, G56, 25.065 mpg, mpg threads ->
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
steve05ram360 is offline  
post #8 of 16 (permalink) Old 07-22-2019, 06:19 PM Thread Starter
Diesel Freak
 
Kmehr's Avatar
 
Join Date: Sep 2014
Location: Colorado Springs
Posts: 524
Thanks: 26
Thanked 22 Times in 22 Posts
iTrader Score: 0 reviews
I just pulled up the Baro gauge on my Edge, its reading 25.2-25.5 right now (at my office which is at 4670 feet), the weather app on my phone however is saying 30.04. This is with the Smarty program loaded. I'm guessing that's a pretty significant difference that might be throwing some things off?

Also if any moderators are watching- Anyone able to correct the spelling of "rail" in the title of this thread? Thanks

1984 Dodge CCSB P-pump NV4500- SOLD
2005 QCSB NV5600, SouthBend OKHD, CFM+, Jake brake, Thuren 3in, Steering brace, Synergy Track Bar, Vulcan 3 micron w/ CAT UHE 416-1225, CTS2 Insight, Smarty S06

Last edited by Kmehr; 07-22-2019 at 06:24 PM.
Kmehr is offline  
post #9 of 16 (permalink) Old 07-24-2019, 10:46 AM Thread Starter
Diesel Freak
 
Kmehr's Avatar
 
Join Date: Sep 2014
Location: Colorado Springs
Posts: 524
Thanks: 26
Thanked 22 Times in 22 Posts
iTrader Score: 0 reviews
Alright I went back to stock this morning before my commute. No change in the Baro reading, it's still about 5-6inHg lower than what appears on the weather app on my phone. What I have noticed though is that what I thought was transmission/clutch rattle, particularly in 4th, 5th and 6th gears around 1600-1800RPMS is gone...I was nervous about this given it's a brand new clutch! Rail pressure on my commute is about the same, but then again I wasn't noticing anything funny with it during my commute with the Smarty loaded.

Not sure what to make of the situation. At 167K miles, my original injectors are certainly getting a little more noticeable noise wise. MPGs and starting are still just as good as they were at 120K when I bought the truck though.

I'm about to decide to just leave tuning stock and get rid of the smarty. Plenty of power at stock level, seems to run a little better, and the locomotive smoke at high elevation, which I do frequently, ain't cool. Maybe once I get some extra $$ I'll go custom tuning.

1984 Dodge CCSB P-pump NV4500- SOLD
2005 QCSB NV5600, SouthBend OKHD, CFM+, Jake brake, Thuren 3in, Steering brace, Synergy Track Bar, Vulcan 3 micron w/ CAT UHE 416-1225, CTS2 Insight, Smarty S06
Kmehr is offline  
post #10 of 16 (permalink) Old 07-24-2019, 11:57 AM
TECH SPECIALIST
 
steve05ram360's Avatar
 
Join Date: Jun 2006
Posts: 9,992
Thanks: 515
Thanked 1,365 Times in 994 Posts
iTrader Score: 3 reviews
Quote:
Originally Posted by Kmehr View Post
I just pulled up the Baro gauge on my Edge, its reading 25.2-25.5 right now (at my office which is at 4670 feet), the weather app on my phone however is saying 30.04. This is with the Smarty program loaded. I'm guessing that's a pretty significant difference that might be throwing some things off?

Also if any moderators are watching- Anyone able to correct the spelling of "rail" in the title of this thread? Thanks
Your baro sensor appears to be OK... I would see what it says at the higher altitude.




Quote:
Originally Posted by Kmehr View Post
Alright I went back to stock this morning before my commute. No change in the Baro reading, it's still about 5-6inHg lower than what appears on the weather app on my phone. What I have noticed though is that what I thought was transmission/clutch rattle, particularly in 4th, 5th and 6th gears around 1600-1800RPMS is gone...I was nervous about this given it's a brand new clutch! Rail pressure on my commute is about the same, but then again I wasn't noticing anything funny with it during my commute with the Smarty loaded.

Not sure what to make of the situation. At 167K miles, my original injectors are certainly getting a little more noticeable noise wise. MPGs and starting are still just as good as they were at 120K when I bought the truck though.

I'm about to decide to just leave tuning stock and get rid of the smarty. Plenty of power at stock level, seems to run a little better, and the locomotive smoke at high elevation, which I do frequently, ain't cool. Maybe once I get some extra $$ I'll go custom tuning.
Have you tried a tune with no added timing to remove/reduce the smoke at the higher elevation?

AFE PG7 drop in filter, AFE Torque Tube, HTT 2.5 turbo, AFE e-mani, ATS Arc Flo, 50HP DDP , 415k, HPTuners, G56, 25.065 mpg, mpg threads ->
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
steve05ram360 is offline  
post #11 of 16 (permalink) Old 07-24-2019, 12:06 PM Thread Starter
Diesel Freak
 
Kmehr's Avatar
 
Join Date: Sep 2014
Location: Colorado Springs
Posts: 524
Thanks: 26
Thanked 22 Times in 22 Posts
iTrader Score: 0 reviews
I have only used SW5 with defaults on this truck. I'll see what the rail pressure does at high altitude on stock before making anymore changes.

As to baro pressure- why is the reading on my phone so much higher? Just using the standard Iphone weather app.

1984 Dodge CCSB P-pump NV4500- SOLD
2005 QCSB NV5600, SouthBend OKHD, CFM+, Jake brake, Thuren 3in, Steering brace, Synergy Track Bar, Vulcan 3 micron w/ CAT UHE 416-1225, CTS2 Insight, Smarty S06
Kmehr is offline  
post #12 of 16 (permalink) Old 07-24-2019, 01:11 PM
TECH SPECIALIST
 
steve05ram360's Avatar
 
Join Date: Jun 2006
Posts: 9,992
Thanks: 515
Thanked 1,365 Times in 994 Posts
iTrader Score: 3 reviews
Not sure... my phone has a built in barometer and it is fairly close to what the truck says. The readings you are seeing are in line with what the chart says.

AFE PG7 drop in filter, AFE Torque Tube, HTT 2.5 turbo, AFE e-mani, ATS Arc Flo, 50HP DDP , 415k, HPTuners, G56, 25.065 mpg, mpg threads ->
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
steve05ram360 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome