i got new pistons and rods and was wondering the best way to break them in? i heard stay in boost and stay out of it?

 

Break it in like a new motor, stay out of boost an after about 500 miles of easy driving along with 2 oil changes on the motor youll proly be fine. Rings dont take as long to seat as they used to so not many miles are realy needed.
(I do oil changes after about 50 miles an then at 500 miles another oil change, I go 1000 miles then go full synthetic oil..)

 

After a build I usually run the car (but not drive it) for about 10 minutes, then change the oil. That'll help flush out any nasty bits that made their way into the engine during the build process. Then drive it gently for 100 miles or so and change the oil and filter again. Don't drive WOT or lug the engine in high gear. After another 500 miles or so: change the oil and filter one last time, do a compression test, and if all looks good you should be fine.

As was stated before, use cheap dino oil for the first few cycles, then run whatever you normally would.

 

My opinion, change oil within first couple miles, then change again some where before 1000 and dont run synthetic until after 1500 miles. Also I disagree with not boosting, I think it helps seat the rings quicker which is good for optimizing compression, and the rings do most of their seating in the first 20 miles I believe, so... How I did mines is just drive it normally, keep the rpms mild, but dont "avoid" boost - actually let some psi get on the gauge, as well lots of down shifting.

 

Alright thanks alot guys