I Have a 00 Si with S2 stage 2 cams with full S2 valvetrain and a Hondata S100 Ecu

the problem is that i will be driving and all of the sudden the car will start studdering at around 2000 - 2500 rpms and then the car wont Rev above 4000 rpms, it will jump back and forth between 4000 to 3000, almost like it is hitting a rev limiter

I think that there is a prblem with the Ecu because when this happens i will turn the key to the off position and then back on and it will work fine again

What do yall think