are ATS trannies bad???

[ltr45063]

i have a 04 6.0 with only air intake and exhaust (stock tune) and the tranny went out completly at around 90k so i purchased a stage 2 ATS with deep pan and billet input shaft and a triple disk torq convertor.....long story short the new ats was only under the truck for about 2 months and was not shifting right and slamming into gear so i took it to certified tranny place here in my hometown ATS ended up sending a new trans and paid for all labor of putting it in.....well now about 2 months from then the 2nd tranny its acting up.......i did however buy sct with tunes from river city diesel. when i take off hard sometimes from a stop light it shifts thru 2nd then revs high and wont come out of 2nd not even when you let off???? i took the truck back to stock on my sct then put it back on street and it was fine. but this has happened several times i hear ats doesnt have the greatest past? did i make a mistake??

[fdchief]

did you have new tunes written to coexist with the new tranny... i believe an ats tranny reacts differently then an oem one.. therefore you need to let your tune writer know what kinda tranny you are running as well so they can adjust accordingly.

[ltr45063]

i didnt buy the sct until after the new ats was unstalled so in other words the new trannie was in and then i went and bought the sct

[fdchief]

i totally understand that but did you give your tune writers the information of the tranny you are running.. and that you arent running a stock tranny?....thats my only concern.... ive never heard anything bad about ats trannys... but i dont know a whole lot about them either... id almost bet that your tunes are written for an ats tranny but for an oem one

[Dave]

Originally Posted by ltr45063

i didnt buy the sct until after the new ats was unstalled so in other words the new trannie was in and then i went and bought the sct

Did you tell the guys at RCD you were running an ATS trans?

[ltr45063]

no they just asked for a strategy they didnt ask for any truck mods

[Dave]

Originally Posted by ltr45063

no they just asked for a strategy they didnt ask for any truck mods

Thats your problem. You need files written for that transmission. Its completely different than the stocker

[fdchief]

Originally Posted by Dave

Thats your problem. You need files written for that transmission. Its completely different than the stocker

Thanks Dave thats what i was tryin to say ....but i think what i was sayin wasnt comin out right

[ltr45063]

k thanks guys ill call rcd tomorrow and see if i cant get new tunes

[ltr45063]

i called river city diesel where i got the tunes and they said yes there is a difference because of the tranny pressures! although if that were the prob they said i would have noticed problems right after putting the tunes on the truck and i didnt!!! i didnt notice trans problems until 2 weeks after or so....so maybe another bad trans??? i took it back to stock tune and took it by tranny shop they said it was throwing a key ignition code but thats it! could it be like the chevys and the ignition have something to do with the trans? just throwing that out there!?!?......how do your guy's truck shift when chipped up?