When you guys have changed to efans, have you gone to the 145A alternator as well, or kept the 105A?

 

200amp and not worry about it.

 

105 won't supply enough power to keep E-fans running.

 

High Output 250Amp Alternator Chevrolet Avalanche 5 3L 03 04 | eBay

i used a 300 amp but this one would do ya

 

I stayed with my 105amp alt. But it finally gave up after 180k miles, so I got the factory 130 amp

 

You guys that went to the 200 AMP or higher, did you go to a heavier gauge wire also?

 

It's always a good idea to run heavier gauge wire when upgrading to a high amp alternator. The stock wiring on pretty much every vehicle I've ever seen has been relatively small or insufficient.

 

Thinking I will go with 250a alternator and a fuse kit, something like this:

High Output Amp Alternator 250 Amp Fuse Wiring Kit | eBay

 

I ran the 105A alternator for a couple years with efans and never had and issue. But I upgraded to a 145A unit when I upgraded the stereo and put in a sub. No point of a high output alternator unless you actually need it.

 

Also a good time to do the rest of the "Big 3" upgrade (do a search, it's covered heavily around most forums) and also upgrade the major ground cables too.