Shooting fire

[Worsham]

I bought a kit to shoot fire from the exhaust but I'm slightly concerned. It calls to cut the 12 volt source voltage going to the ignition coils but I don't want to cut wire right at the coil. I was trying to find the wire in the ECM but from what I have found, Chevy loves to use pink/black wire. I'm hesitant to cut just any ol pink and black wire. But when you follow the wire back, it says injector. Any insight would be helpful.

 

[Classy]

I am always a fan of it happening naturally. The exhaust on these are so short that with a straight through muffler you should not have an issue

 

[Markm]