fuel cut

[NTRA08]

I recently started having problems with my car again. I go to boost hard and the car kinda shuts down. then the check engine light comes on. I checked my codes and it say 34 and 43. I have a HKS FCD type-k. And the f-con fuel management system. How could it be fuel cut? Maybe I have a massive boost leak. It only happens when I get above 10lbs of boost

 

[hvyman]

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=FI&P=28

 

[NTRA08]

I know what the codes mean I just need to figure out what the problem is. I pretty much checked everything and it still does it. The only thing I haven't replaced is the intake gaskets.