sr20det swap, tuned & 2 days later big problems

[sr20kouki]

ok so i had it tuned at intec racing in kent washington, ran great for 2 days and after i filled up(92 octane) all of a sudden it falls on its face at wide open throttle in boost, at half throttle its fine so it sounds like a fuel filter to me...any ideas?

[05civse]

fuel filter, fuel pump not keeping up, air filter... start with basics

[2.0-TURBOcoupe]

could be the MAF because my friend upgraded to a disco potato and @ 10 psi half throttle was fine but full it would stutter and we found out that the MAF wasnt moving enough air