Can the RS4 IC's fit under the stock S4 bumper? Don't remember if anyone ever resolved this...

Didn't Kaos get his to fit under the stock bumpers without hassle?
 

I think he did have to cut some fender though.

Yup, with some cutting.

Cutting? Fender lining? Actual metal?

Actual metal.

Imaginary metal. Not actual metal. ;)

Found this pic . . . it appears cutting occurs on the sides of the front bumper
 

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I think the bumper remains untouched...
 

I recall him having pictures of the amount of metal he had to remove from the fender in his hand. It wasn't much. Maybe 1-2" or so.

Cutting is done on the inside part... not the outside bumper part...

No, Really??? ;-P