As for whether the IDF will switch to new Garrett TFE-1088 engines with 12,000 pounds of thrust, as rumored, Su says that engines are constantly being improved and the one used in the finished version will certainly be better than the one used in the prototypes, but he adds that the IDF's speed has already reached the air force's minimum requirements.
至於 IDF 是否會如外傳，改用蓋瑞特公司新推出、每具能產生一萬二千磅推力的 TFE-1088 型發動機呢？舒孜川只表示，到正式生產時，發動機經不斷改進，一定比原型機用的更好。林文禮總司令也從未正面答覆這個問題，只表示，IDF 的速度「已達到空軍最低的要求」。