Computer regulates alternator?

[Z28TWITCH]

Bringing my tahoe back to life and I was wondering, does the 2001 use a pcm control for the alternator? I cant seem to find an answer on whether or not my 300 amp alternator is putting out full power because of this. Im running 3k for the subs and 1k for mids and highs...I get some bad voltage drops (14.3 down to 12.1) when Im really beating on it. It also flutters around a bit at idle and cruising speeds. Alternator has been in the truck since 2011 and Im running a pair of red tops (got a matched pair for $300). Anybody got some ideas? Thanks.

 

[massivespl]

3k amp and 1k amp will use around 400amp worth or draw not to mention other electronics in your truck. You will be maxing out your alt... the 2001 should not be pcm regulated... I don't think it started until 2003 because my 2002 IS NOT pcm...


Also red tops arnt that good. They use to be a good brand back in 2000 but times have changed. Xs power, North Star and juicebox battery are on top of their game... other AGM batts like energizer and Duracell g31 batts are decent budget battery's for around $200 each. What brand alternator do U have?

 

[Hyperion]

My 04 isn't either. I think it actually started in 05.

 

[Z28TWITCH]

Ok, good enough. btw, 4000 watts does not equate to 400amps...simple math says 285 amps at 14 volts. all good. batteries are probably getting weak and cant keep up anymore. its a mechman 300 btw.

 

[massivespl]

Ok, good enough. btw, 4000 watts does not equate to 400amps...simple math says 285 amps at 14 volts. all good. batteries are probably getting weak and cant keep up anymore. its a mechman 300 btw.

Yea if u can hold 14v+

 

[massivespl]

http://s1308.photobucket.com/user/massivespl1/media/C58D2531-EE50-4B2B-98D3-441C6619C51C_zpslk742mwf.jpg.html][/URL]

Just tootin my own horn. Here's my alt set up. Quad 350a excessive amperage hairpins

 

[Z28TWITCH]

that is absolute nonsense.....and it makes me hard. sick setup man. wish i had the funds to actually build somethin up like that. too many other toys. any rate, had the truck in the shop today and just sat with the meter running and theres a noticible voltage drop (14.6-13.8) at idle with just the truck running and nothing else. gonna drive me nuts. swapping a known good alt in tomorrow and checking again. really hoping my alternator didnt take a dump. thanks man.