I am planning to buy either the 140 amp or 200 amp Powermaster from Summit tomorrow. Because the 200 amp one is over twice as much ($360 vs. 160), I was wondering if anyone has the 200 amp one and can comment. I am leaning towards buying the 200 amp one because the car will have 2 Alpine PDX amps in it (1000x1 and 150x4), and I don't want ANY issues with lights blinking at night. I won't be cranking the crap out of it, but I will turn it up. I have a 140 amp OEM alternator in my '97 Z28, and with 1 Xtant amp, it blinks...hence my feeling I should move up to a 200 amp one for this car.

Any help is appreciated!

 

id hope u have a capacitor inline for the amp.. that could be your problem for the blinking

 

caps are never needed. you should have replaced charging wires and reground block to chassis. look for big 3 upgrade. i have 140 amp powermaster and everything is car is power something or another. all aftermarket speakers and head unit. just took out amp and subs to place into wifeys car. never blinked. i am using 4awg wires to charge and ground. and 4awg from batt. to starter and batt to block. i get full current all the time.