2004 Dodge Srt check engine
- Thread starter Smlorimer7
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Either or those problems need to be resolved before Im guessing a factory re flash can be done ….
This is one of those examples of where dealerships won't (or can't ) work on something past a certain age. In this case the dealer can pull codes but don't have the ability to flash anything pre-CAN. For a 2004 they would've had a DRBIII in the past; for PCI bus vehicles it's a magic box lol. I'm surprised they got rid of any they had, but then again they aren't made anymore and functioning units are getting fewer and far between.
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Very nice! Good to have expert input like this available to us
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Good idea to get several opinions before trusting the dealership. @dancragin Dan Cragin is another excellent source
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Well...thanks!
It’s not what it used to be to be , that’s for sure !
Did,you just say TRUSTING A STEALERSHIP HAHAHAHA !
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Oxymoron
This appears to be the type of tuner he sells now .. read the page to understand the required limitations about emissions
HP Tuners MPVI4 for 2004-2006 Viper Truck
Tuning 1990-2023 SCT Ford / Lincoln and Mercury Vehicles Including the Focus ST, Taurus SHO, Ecoboost Flex, Ecoboost MKS, Ecoboost MKT, Mustang GT and GT500! We also offer SCT Dodge and GM tuning as well. Dodge Coverage is from 1996-2023 Including 2008-2017 Dodge Viperwww.unleashedtuning.com
Yes, light-years ahead of the original Tuners for these trucks.
Data logging is a huge benefit.
Ronnie/anyone can you explain how it would work for us ? Constant logging of data or all data the truck would have ? connecting how ? internally or Bluetooth to another device needing a app or program ? What info can we use and can we actually adjust settings ( not a good idea without real knowledge lol ) ? Remote tuning from a tuner ? I have no idea of its capabilities between the SCT’s and these !
So many questions, so little time.
This particular device uses a data logger hooked into the OBDII port and a pc or via Bluetooth to a phone or tablet of some kind. And it uses free software to make it happen.
The data leaving the OBDII port on our trucks is slow compared to modern systems, but unwanted data can be shut off to improve the datastream bitrate, if you will. If you don't need things like ambient temp or shift points, for example these can be shut off and it will reduce overhead and improve speed and accuracy of the incoming data.
During the data logging of a 1/4 mile pass for example, the data logger is receiving and transmitting data from several areas on the vehicle.
The Knock Sensors start to operate (2005/2006 models only) and pull timing (often slowing the vehicle down) during a w.o.t. pass... Now you know they detected ping/knock, you could now determine WHY the knock sensors activated in the first place. Maybe the timing is too aggressive for the octane of fuel used...
That's just a snippet of info it is gathering when datalogging.
As far as tuning goes, live streaming- So someone in Los Angeles could see what my truck was doing on the dyno in Calgary and make real time changes on the fly, that isn't quite there yet.
I've heard they are "working on it" with the latest controller but you know how that goes...The model just before this one (MPVI3), might be a safer bet.
The workaround is to datalog, email that file, wait for a new revised tune and install that. Then try more pulls. The better the datalogging, the higher the chance for success.
Or, even better, your Tuner travels to the Dyno with his equipment and works his magic on site. That works well for me.
To unlock my truck using it's v.i.n. and (1) Controller is dirt cheap and requires 1 or 2 "credits" for 50 bucks each and is good forever (a long time). It allows you to tune your vehicle yourself.
What isn"t cheap however is blowing a hole through a piston due to a lean out condition or ignition that's over advanced if the new tune is a bad one. Knock sensors are a LAST line of defense but will NOT prevent engine damage, outright.
Even with forged pistons, they can become hammered/compressed enough to prevent ring movement and the engine will fail (albeit in a less spectacular fashion).
The tuning seems easy, but many things that shouldn't be connected to one another, ARE with these trucks.
For example, changing a fuel trim and timing in a cell or two and the automatic now shifts like doing a neutral-drop into gear. But..the transmission tuning itself wasn't intentionally (directly) changed by the Tuner.
That is where an experienced Tuner comes into play. That is/was the nightmare of tuning Mopars as seemingly unrelated components change.
Some shops around here out of frustration were sending supercharged 5.7s out with a STOCK tunes...yikes!
IF the new tune is way out of whack, the e.c.u. starts to revert back (re-write) to the base-code. That doesn't fix things nor prevent damage, but it is kinda cool, Terminator stuff.
Broad overview (and it may even be mostly right) so...hope this helps! I completely understand what an engine needs and why, but hire my tuning chores out as tuning via a PC isn't my area.
This particular device uses a data logger hooked into the OBDII port and a pc or via Bluetooth to a phone or tablet of some kind. And it uses free software to make it happen.
The data leaving the OBDII port on our trucks is slow compared to modern systems, but unwanted data can be shut off to improve the datastream bitrate, if you will. If you don't need things like ambient temp or shift points, for example these can be shut off and it will reduce overhead and improve speed and accuracy of the incoming data.
During the data logging of a 1/4 mile pass for example, the data logger is receiving and transmitting data from several areas on the vehicle.
The Knock Sensors start to operate (2005/2006 models only) and pull timing (often slowing the vehicle down) during a w.o.t. pass... Now you know they detected ping/knock, you could now determine WHY the knock sensors activated in the first place. Maybe the timing is too aggressive for the octane of fuel used...
That's just a snippet of info it is gathering when datalogging.
As far as tuning goes, live streaming- So someone in Los Angeles could see what my truck was doing on the dyno in Calgary and make real time changes on the fly, that isn't quite there yet.
I've heard they are "working on it" with the latest controller but you know how that goes...The model just before this one (MPVI3), might be a safer bet.
The workaround is to datalog, email that file, wait for a new revised tune and install that. Then try more pulls. The better the datalogging, the higher the chance for success.
Or, even better, your Tuner travels to the Dyno with his equipment and works his magic on site. That works well for me.
To unlock my truck using it's v.i.n. and (1) Controller is dirt cheap and requires 1 or 2 "credits" for 50 bucks each and is good forever (a long time). It allows you to tune your vehicle yourself.
What isn"t cheap however is blowing a hole through a piston due to a lean out condition or ignition that's over advanced if the new tune is a bad one. Knock sensors are a LAST line of defense but will NOT prevent engine damage, outright.
Even with forged pistons, they can become hammered/compressed enough to prevent ring movement and the engine will fail (albeit in a less spectacular fashion).
The tuning seems easy, but many things that shouldn't be connected to one another, ARE with these trucks.
For example, changing a fuel trim and timing in a cell or two and the automatic now shifts like doing a neutral-drop into gear. But..the transmission tuning itself wasn't intentionally (directly) changed by the Tuner.
That is where an experienced Tuner comes into play. That is/was the nightmare of tuning Mopars as seemingly unrelated components change.
Some shops around here out of frustration were sending supercharged 5.7s out with a STOCK tunes...yikes!
IF the new tune is way out of whack, the e.c.u. starts to revert back (re-write) to the base-code. That doesn't fix things nor prevent damage, but it is kinda cool, Terminator stuff.
Broad overview (and it may even be mostly right) so...hope this helps! I completely understand what an engine needs and why, but hire my tuning chores out as tuning via a PC isn't my area.
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Thanks Ronnie ,very informative ! It sounds like an insurance policy to help protect the motor tracking important systems that help avoid a catastrophic event ..
With the SCT I’ll take it that no data logging records are available yet can be remotely tuned buy a tuner while being Dynoed etc. or reset tune/update based on mods done that a tuner is familiar with .
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Wow
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I remember the 04's don't have knock sensors so that spared me the question hahaha
Sure they have Knock sensors … their called the driver hahahaha .. knock on wood
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