Originally Posted by OpenGL
Are you getting voltage drop from draw or is your voltage without draw low to start with?
If your voltage is low when starting the car and no load from the amps then it could be your voltage regulator.
I know I was unimpressed with my mechman 240 because the voltage regulator on my car kept it the same as the stock alt. About 13.9 when I start the car. Drops to about 13.5 after it heats up over an hour. Drops by about 0.5 volts when hitting the solid notes at full volume. Its just the voltage regulator in my case. Steve meade even did a video on how he had to get a voltage booster to go between the cars voltage regulator and the alternator to get 14.4 out of a mechman.
Voltage fluctuated way more than I liked, I only have a main 150A fuse, alt was supposedly rated @ 300A @ 1200rpm, I pulled a peak of 190, average around 160's but voltage dropped down to just over 12V before I shut down my test. My test was a 40hz tone playing through my system which was only one 1600rms @12.5v class D amp. If I drove my truck @ 3000rpm cruizing down the hwy no system or accessories on voltage being monitored through my OBDII port my voltage bounced from 12.5-15V.....I am sending alt back today....
When I put old alt back on, voltage was much steadier and more predictable, increase volume, voltage goes down, lower volume, voltage goes up....etc Problam is, alt is weak and only pushing 115A
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