PLEASE HELP

[drilldog]

I have a SCT TSX with river city diesel custom tunes. Once was downloading a tune when a battery went dead (i had a bad battery & didnt know it), download stopped and when the batteries were replaced it would not download. Also truck wont start. Ford dealer could not communicate w/ pcm. had to buy a new pcm. down loaded the 450rwhp tune & everything has been fine until i went to switch to a better mpg tune. it didnt download & now the truck wont start again. i cant keep buying pcm's. SCT said to mail them the pcm & they would try to fix it, for free. A rental truck might end up costing the same as a new pcm. are the shift on the fly tuners better? such as the H&S mini maxx? I was told the SCT & Spartan tuners were better. My total costs are around $4000 with the tuner, intake, exhaust, new pcm & batteries. I am freaking out thinking i might have to buy another pcm or possibly a new tuner to avoid this. Sorry for my first post being so long. Thanks

[superduty6.4]

With the shift on the fly you don't have to go through the download pcocess every time you want to switch. In each set of tunes there are 4 adjustable settings. For instance I run the hot damm on my mini maxx. I have a 50hp, 125hp, 225hp & a 300hp setting that can be switched on the fly at any time. As for if they are "better" or not I have no idea because I haven't run spartan, sct or have run any custom tunes. I think for myself though the convenience of having 4 different settings to adjust between is what sold me. I came from an edge and had to download each time I wanted to change so now I really appreciate the shift on the fly.

[drilldog]

Thank you for the info. It scares me now to know that there is a chance every time i want to change my tune that the download could be interrupted and i will have to replace my pcm every time it is.

[superduty6.4]

Originally Posted by drilldog

Thank you for the info. It scares me now to know that there is a chance every time i want to change my tune that the download could be interrupted and i will have to replace my pcm every time it is.

It's not all that common for that to happen but I imagine its a pain when it does. It can happen with any one of the tuners though.