I have a weird problem, whenever I rev the car above like 4k on the tach....once I get that high in the RPM's my voltage light keeps flickering on and off and then sometimes all the lights get really bright in the car and the ABS light will go on too for like 10 seconds and then go back to normal.

Could this be something wrong with the voltage regulator? If so, does that mean that my alternator is going bad and have to replace that or is there something else that I can replace to fix it.

Thanks guys

2001 Volvo S40-Perrin MBC@ 11psi, EST intake, 35% tint, still slow