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  #1  
Old 05-10-2010, 02:51 AM
303soul 303soul is offline
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Default a few questions about my ram...

i was a ford guy for years and after my girlfriend completely totalled my super duty i ended up moving and after careful consideration bought a 2003 single cab short bed with over 80000 miles for a little over 6 grand. the overall comfort and design of the truck is great, but there a few things i'm concerned about. the 4.7 with 3.55 gears is pretty good with no load (only passengers), but when i'm pulling a 12 foot trailer i have to turn the o/d off so it doesn't keep bouncing around gears. and i just recently started using the a/c and i got a check engine light, just wondering how much of a problem that might be. other than a dual outlet two-chamber muffler i have no other mods on the truck. i was wondering if there are any budget-friendly upgrades i could do to improve the towing performance?
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Old 05-10-2010, 03:37 AM
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Hello and welcome to the site! Got any Pics???

There are a lot of talented people on this site, so if you have questions feel free to ask, and I am sure someone will be able to help. If your looking for some accessories check out our vendor section and may the modding continue or begin
http://www.ramforumz.com/forumdisplay.php?f=53
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Old 05-10-2010, 09:22 AM
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The 4.7 and 3.55 gears just weren't meant to be a heavy tow combination. I have 3.92 gears in mine and it still works hard on loads over 4K pounds.

If you plan to use it to tow large loads you'll want to consider changing your gears to 3.92 or lower. I've read other forums where guys have put 4.11 gears in.

In my truck I modded the IAT circuit so I can dial in the power I need. The IAT tells the PCM how much fuel to meter into the motor, I've put in a 70K pot to vary the temp according to the need. I use a scangage to monitor the IAT, the lower the temp dialed in the more fuel the PCM is gonna command and the more power the motor is going to generate. Higher temps on the open road has given me 22+ MPG averages.
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Old 05-10-2010, 09:33 AM
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Welcome aboard, that was a great and informative intro! I see that silvereagle98 has already chimed in to help, so I will leave it to more knowledgable members here to answer your questions. Talk to you soon!
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Old 05-10-2010, 09:35 AM
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Quote:
Originally Posted by silvereagle98 View Post
The 4.7 and 3.55 gears just weren't meant to be a heavy tow combination. I have 3.92 gears in mine and it still works hard on loads over 4K pounds.

If you plan to use it to tow large loads you'll want to consider changing your gears to 3.92 or lower. I've read other forums where guys have put 4.11 gears in.

In my truck I modded the IAT circuit so I can dial in the power I need. The IAT tells the PCM how much fuel to meter into the motor, I've put in a 70K pot to vary the temp according to the need. I use a scangage to monitor the IAT, the lower the temp dialed in the more fuel the PCM is gonna command and the more power the motor is going to generate. Higher temps on the open road has given me 22+ MPG averages.
The IAT is only one small part of the speed density fuel equation and isn't the influence over injector pulsewidth.
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Old 05-10-2010, 10:05 AM
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Welcome to the forum! Glad to have you here!
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Old 05-10-2010, 11:47 AM
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Quote:
Originally Posted by Remerson228 View Post
The IAT is only one small part of the speed density fuel equation and isn't the influence over injector pulsewidth.
Might be a small part of the equation but it's large enough to make a difference. Before I started experimenting last winter, this truck never got over 18 on the road. Now it's a consistent 22.2 on the same trip to work that I've taken during the 8 years I've had this thing....maybe I'm just seeing things. But then again the gas tank range has gone from 500 miles to 670 miles between fillups.
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Old 05-14-2010, 11:33 AM
jblood05 jblood05 is offline
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Quote:
Originally Posted by silvereagle98 View Post
The 4.7 and 3.55 gears just weren't meant to be a heavy tow combination. I have 3.92 gears in mine and it still works hard on loads over 4K pounds.

If you plan to use it to tow large loads you'll want to consider changing your gears to 3.92 or lower. I've read other forums where guys have put 4.11 gears in.

In my truck I modded the IAT circuit so I can dial in the power I need. The IAT tells the PCM how much fuel to meter into the motor, I've put in a 70K pot to vary the temp according to the need. I use a scangage to monitor the IAT, the lower the temp dialed in the more fuel the PCM is gonna command and the more power the motor is going to generate. Higher temps on the open road has given me 22+ MPG averages.
Tell me more!
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