I hooked my msd window switch to the coil pack as shown on beers pics of how he did his. when I did it, it started misfiring and idling funny, as soon as i disconnect it it runs fine, has anyone else had this problem. Thanks for your help.

 

Tap into the white wire out of the PCM. Initially we tapped on off the coils for the window switch. Car did not like that at all.

 

Mine works fine (digital style). Even used program 1 not 4 cyl mode.