fuel cut issues i think. HELP

[madmax4217]

alright guys, i am an ase tech so i can understand almost anything that can be answered. so don't hold back at all, and criticize the heck out of me PLEASE, i can take it.
i filled out the mods and hardware stuff in th profile so feel free to check it out.
It's a 95 talon with full 6 bolt motor swap, head block and intake manifold and a 99 gsx ecu, 2g mas (no honeycombs) and a WLB 255
now the problem at hand is fuel cut i believe. using an safc1 and an A-VCR to control an 18g big wheel turbo and FIC 680's. when i boost anything over 10-12 lbs. i get popping and stuttering, and the boost gauge flutters alot. from my own knowledge i feel it's fuel cut. i only have a narrow band 02 for now, but have access to the snap on verus ultimate scanner to do some live data pulls.
Can anyone tell me why i am hitting fuel cut soooooooooo early with this set up. from my calculations i should be able to run 18-20 comfortably
any response and help will earn you rep. i like to acknowledged effort
Thanks a lot guys, READY SET TYPE!!!

 

[talon913]

are you logging for knock??a logger would realy help you know whats realy going on.your probly knocking up high or leaning out pretty bad

 

[madmax4217]

I RAN IT A FEW TIMESD WITH THE VERUS SCANNER HOOKED UP, READING MINIMUL KNOCK, AS FOR THE LEAN NES, I DROPPED THE BOOST AND ADDED LOTS OF FUEL, SAME PROB. my other question is, should i have the fuel pressure selenoid hooked up or not?

 

[talon913]

if you dropped the boost why did you add more fuel?? now you must be running pig rich do you have a WB02 that realy helps out to

another thing i dont see in your mods is an upgraded fuel pump to push those injectors you need a 190 rewired or better and a AFPR your not pushing out the fuel by just adjusting the safc your maxing out your stock fuel pump if you still have it in

 

[madmax4217]

i would rather be pig rich and low boost, a little edit, the cut becam a little weaker. i'm just afraid to blow a motor i hand built, you know!!!! i do plan on gettin a wb02 soon. i played around with the afc a little and was able to boost 12psi to 5k smoothly, but at 20% thr. if i go beyond say 40% i get cut right away around 2800 -3000. also my avcr setting are
50% .65 bar, but i get like 16 psi?!?! i have to drop it to .50 bar 40% to get ten psi i have a walbro 255 as well

 

[talon913]

do you have an aftermarket fuel pressure regualator as well??and what do you have the base pressure set to on it??

 

[rEclipserGST]

do you have an aftermarket fuel pressure regualator as well??and what do you have the base pressure set to on it??

+1 on the afpr with the walbro 255. Your probably bogging out from fuel overrun. I been there.