hey man, since you have one of the fastest stock evos and you followed mitsus break in, were you careful on boost to 5000 rpm, or did you just simply keep it under 5000 rpm for 600 miles not caring about boost. Also after 600, did you run the car ***** out? You kept mobil one in, when was your first oil change?? Thanks a million
Punisherofall

 

bump

 

its not breakin and what not its all random assortment... some cars produce more power some less... but all produce the base amount that is said to be.... The others are quoted as "gifted" It might be sometihng as small as tighter tollerances or looser or the parts broken in easier or not so easy... or just theability to produce more power... no two people are the same, no two cars are the same......

 

Punisherofall,

Yes, I followed Mitsu's recommendations to the T, maybe a little easier. I never ran it over 5000 rpms until just over 800 miles (the weather helped out there). Also, I did not keep my foot in the boost for very long, only blip'd it a couple times. My odometer showed 1100 miles when I ran those numbers. My personal opinion is that the rings need to be seated to keep compression and prevent blow-by. In order to do that, bringing the engine up to temp and back down frequently for 600 miles, seems to work. High boost pressures need properly seated rings. 1QWKEVO is correct in saying that there is differences in ring, bearing, and seal tolerances set by the factory that could make a world of difference. Your car may be slow now with tight tolerances, but will increase HP as your engine loosens up. Mitsu doesn't really go in to detail why the break in is necessary, just that it is. They built the motor, they should know.