could have but it didn't luckily lol.

The shop that built my car has done it to several Evo's with twins and had no issues. His shop Evo made 740whp/540tq with no break in and it still works like a champ. But i do agree with not shifting hard for a few hundred miles. I drove 1100 miles cross country right after the tune so as soon as i made my destination i was abusing the clutch and had no issues.

 

Why do clutches need to be broken in?

 

so the disc has its full surface area grabbing. they really dont need much at all. i have done 75 miles then strait on the dyno. on stock cars none at all and zero problems.

 

Yeah it was kind of a leading question. I have never broken in a clutch and never had any problems.

 

i think a lot of it is old school thinking from stuff actually taking a while to break in from poor machining. same with motors, they hardly need any break in.