possible to swap ECU's from different years?Throttle BodyQ

SX2.0 R/T · Post by **SX2.0 R/T** » Tue Sep 21, 2004 5:56 pm

I have a 2003 R/T and since throttle bodies don't seem to work on an 03 R/T and work fine on an 04 R/T, is it possible to swap out the ECU's so I won't get that "limp" mode problem?

I realize that they are both NGC comps and that this really isn't a great idea, but would it work? Or should I just wait it out and maybe some day way way far away someone will make an aftermartket computer (maybe even for the R/T's).

Thanks for your input

Louie · Post by **Louie** » Sat Nov 06, 2004 11:08 am

this is uncharted territory. i dont think you'd find your answer unless someone tried it.

2k2patriotblueneon · Post by **2k2patriotblueneon** » Sat Nov 06, 2004 3:12 pm

Ummm....Limp mode should not exist on an R/T. Limp mode is an ATX only problem.

Louie · Post by **Louie** » Sat Nov 06, 2004 3:20 pm

2k2patriotblueneon wrote:Ummm....Limp mode should not exist on an R/T. Limp mode is an ATX only problem.

wrong. .

i have an r/t.. ive been in limp home mode.

rev limiter at anywhere from 3k-4k depending on throttle position.

car runs like shit.

dvg3.5SE · Post by **dvg3.5SE** » Sat Nov 06, 2004 8:29 pm

I am working on a Fix for 03 R/t TB issues, i have discussed it with Lorenzo and we think it'll work to "trick" the ECU. I will post up the results if i get it done before my 03' is sold

SX2.0 R/T · Post by **SX2.0 R/T** » Sun Nov 07, 2004 12:01 am

Thanks for the info. I'll be interested in hearing any progress that you've made.

Thanks again

2k2patriotblueneon · Post by **2k2patriotblueneon** » Sun Nov 07, 2004 1:08 am

I stand corrected.....I was told that by a mechanic at my dealer.....tis what I get for listening to those morons. But I have no MTX to go by so...

DvsKreationz03 · Post by **DvsKreationz03** » Fri Dec 31, 2004 4:56 am

I can't speak for the R/T's, but my ATX 03 SXT didn't have any problems after I threw in my 60mm TB, and I drove it 3.5k miles in the 2 weeks I was home on leave from Iraq. I'm gonna try an put in the 00-02 Mopar ECU in when I get back, unless FAST comes up with sumthin for me. I'm in contact with them to try an get a perf. ECU and fuel sys 4 the 300+hp/400 w/ NO2 I'm lookin at puttin out here within the next yr. I'm sure if we all get together an pester the shit out of someone, I'm sure they'll get the message that us NGC/non-NGC guys need this shit.

eclass82 · Post by **eclass82** » Mon May 16, 2005 2:59 pm

what is limp mode???? sorry noob here

Louie · Post by **Louie** » Mon May 16, 2005 11:46 pm

its when your computer is basically at a loss of what to do. .like if you upplug your map sensor. .

it will set itself to a "limp home" map. where your revlimiter is around 4,000 rpm and you car runs rich as hell and like crap .

basically, so you can limp it home and figure out what hapened