hey guys,

I'm researching and asking questions on various modifications I am contemplating. I have been told that using an Ignition controller eg. MSD etc. can be harmful to your car's ECU. Is this true? If any one knows please respond soon.
Also I'd like to know where I can research engine mods before trying them. Does any one know good sites?

Thanks in advance for all your help.

It doesn't.

It is like an audio amp. DOes it damage your radio?