Need some suggestions to my sr problem

[yellowcell]

I need some suggestions to try and narrow down my list. I have a blacktop with a e5 ecu, and well the swap was completed about a month ago and its been running alright. after a quick donut (after 500 mile break in) when i first start the car and put it into first the car start moving then around 2,000 rpm it starts to sputter like its not receiving air, and it does it all the way through 3,000 but then after that it pulls perfectly fine.... =( and after i drive it for a while it stop.... please jut give any suggestions, and i tried searching but i dont know what to use as a key word.... ive tried different ones already no luck,

[duffman1278]

Vacuum leak, boost leak. Test those things.

[yellowcell]

How do you check for a boost leak? also what steps would i take afterwards for a boost leak?

[duffman1278]

search up on google "diy boost leak tester" theres tons of sites that show you how to make one and explain it in detail.

[yellowcell]

How do you check for a boost leak? also what steps would i take afterwards for a boost leak?