modify stock tune after custom tune installed

[typan]

When a custom tune is installed can I do a modify stock tune (tyre size, shift fitness etc.) without upsetting the custom tune installed?

[bhrodeoaz]

if you do the modify stock tune, it will replace your tune already written to the PCM, now if your asking can u change those options in the custom tune, that you would have to find out if the CMR has locked those options out or if they were left alone. Save your custom tune to your PC, as to the options under Quick adjust vary by model.

[typan]

Ok what about if I do the modify stock tunes first & then the custom tune that is if the custom is not locked?

[bhrodeoaz]

the only way you can physically change multiple tunes at one time is have the CMR software--- other than that you can change the parameters all you want-- but you only can install 1 tune at a time and change the parameters in the tune that is going to be installed. To change mulitple tunes you would have to contact a CMR dealer and see what they would charge you for the modifications of the canned tunes already lin your predator.

[typan]

I think I understand in what you’re saying now, If I get this correct when I send my last tune written away it comes back with the custom tune + my last written together, correct?

[bhrodeoaz]

any tune that you want permentaly modified has to be done thru a CMR dealer--- if its a 1 time change you can modify the parameters before you install the tune. as far as combining tunes --- that would be between you and a CMR dealer to figure out what it is your after. Your PCM will only hold 1 tune at a time.