sr problem

[tRidner]

so when i got my sr in it was kinda running like crap

it was hesitating bad, and it wouldnt hit full boost, it would get to about 4 grand and start hesitating bad!

so i got a new 255, new fuel filter, and new spark plugs, it runs a lot better it doesnt hesitate very much anymore, but every once and a while when i get on it about 5 grand it will hesitate a little,

also when i get on it it will hit boost and i can feel it pull to about 5lbs and around 4grandish it doesnt pull as hard but if i keep on it it starts to pull again---i have no idea why it does this

so after i did the fuel stuff and the plugs im thinkiing that it might be a boost leak, i was wondering if i have a cracked ic pipe what could i use to patch it up?

thanks in advance!

[compactfean]

What maf are you using and is it draw or blow through?

[tRidner]

not really sure, the motor is completely stock