HI JULIO what type of tuneing issues will a hole in intercooler cause ,I have been chaseing a low 02 710s at the end of the quarter mile and always thought it was fuel related HAVE I FOUND MY PROBLEM BOB RENO
I would think it would create a drivability problem since more air is going through the MAF than entering into the engine. But once the MAF goess 255 the chip is dropping in X amount of fuel based on programmed parameters.. So I dont think it would give you a low O2 reading. But hey.. these cars can sometimes be weird.. and every problem you have to look at from various angles.
Now a loss of performance in the way the car pulls.. absolutely. Your blm's at idle should have shown the issue tho.