Quote Originally Posted by DirtyMechanic View Post
do you not understand cylinder pressure and seating the rings. yes about 80% of break in is done within the first 20 mins of driving. but 500-1000 miles after compression is still changing.

if you go full bore on a fresh motor. you have a chance of washing the cylinder with your rich full boost runs. compression will never come up. i have rebuilt many motors that ever after 1500miles of your so-called full boost break in. and compression never came up to anything reasonible and the motor never made good power for the psi it was running.
I run my engine at MINIMUM 600hp every time it runs and after 2 years it still has had the same compression up until a ring failure in a racing situation which no engine builder can prevent, i have built engines for people on this board that have done it exactly how i have stated and are running fine. You aren't going to wash anything out, ive FLOODED cylinders with gas and drained them and fired right back up perfectly fine several times (injector failure) and also ran into the 10's air fuel during tuning consistently in the higher boost stages of the tune. If your compression isn't correct and CONSISTENT after the FULL tune THEN SOMETHING ELSE WAS FUCKED UP that created your problem. I didn't invent this method, i've adapted to it for the last 4 years and it comes from some of the most reputable engine and race car builders in the sport compact genre.