What's your favorite mod?

[Dozerboy]

Can’t name one. I’m a total package kind of guy, but it all started with EFI live. I love to tinker, so doing my own tuning gives me unlimited tinkering ability.

 

[Forever]

Mike L. built trans has been my favorite. Hands down.

 

[diesel-max]

Removing the 7.3 from my Pulling truck and installing the lly... probably my favorite mod so far.

 

[LB7_01DURAMAX]

I’d say built trans or the tunes