RomRaider

I'm hoping someone either has a base map similiar to my setup or can help with a tune I've had someone else working on (I didnt create the tune and from what I can tell it's just a modified cobb tune so I won't post it due to the rules). For the most part my tune seems "fine" but the guy tuned for max psi when asked not to and after 30+ revisions I still have a spot on the interstate between 2800 and 3200 where it sputters and has knock between -4 and 4 psi on the boost gauge. The guy said it was likely timing related and I should make sure the belt isnt off a tooth on a cam but that seems odd (to me) if it's only one very small rpm/psi range. I've looked at several other maps on here just to compare and my timing table is completely different from anything else. Any help would be appreciated.

JDM EJ207 V7 twin scroll vf37 w/ jdm ecu and carberry rom in an 04 wrx wagon
V8 map sensor
perrin CAI (in fender w/ aem dry flow)
tomei header and up pipe
cobb cless down pipe with borla hush exhaust
Was told 1000cc injectors from previous owner
Penguin tech flex fuel kit
sti TMIC w/ cobb bpv - full recirc
sti red intake manifold
GS 3 port boost controller

If there is anything I missed I'd be glad to find out if someone is willing to help me.

you'll at least have to post a log and LTV of what the car is doing to try and see what's happening - also have you taken the tuners advice and checked the belt timing?