I have recently installed all the mods on my signiture and haven't gotten a tune yet. That's becasue I had a part missing from a meth kit which stalled my installation thus my tune. I have been driving very moderate with the car. Not exceeding 5k rpm.

Everytime I press the gas hard the rpm will rise to 4.5 k and seems like the computer cuts the fuel and blinks Anti Lock. I know I need to ASAP but wanted to know what is the cause of this. Is it because it's possibly running lean and causing knock?? Or is my mods just messing with computer? Im just hoping it's nothing serious.

I will be getting tune this week.

 

I have the boost at 17 psi as well.