Got my X-CAL 2 in
 

Quick question. Is it really neccesary to disconnect the fuel pump and electric fan fuses b4 using the X-Cal 2? I know everything I read b4 ordering it said just hook it up to the diagnostics port and upload your tune, but it came with "instructions that said to disconnect the fuel pump and electric fan fuses.
Thanks for any help

Nope.It's not needed.

I just sat in the car and turned the radio off to save a little juice, it'll only take a couple minutes to upload the tune, the battery will be fine.

Thanks for you're replies. I'll be uploading it soon as I get my gears installed