Voltage problem after GTM SC install
 

I just recently installed at GTM stage 2 SC on my 7AT 370z, it seems that i am having problems with the voltage now. The safe or regular voltage that the 370z should be operating at is 14v, 13.9 or 13.8 if it dips, when I turn on my car the voltage is at 14.5 or even 14 so its normal, then it dips down all the way to 13.4 and 13.2v and stays like that. I check all the earths, but all seems good, battery is brand new as well. Please guys any kind of help on what you might think the problem would be or things i should check for when a problem like this happens, could it be a weak alternator or a lose wire some where, and help or advice i can get for you guys would be much appreciated :tiphat:

Do you have one of these yet?
https://www.gtmotorsports.com/produc...cat=331&page=1

My car did this same thing before the voltage stabilizer. Everyone once in awhile my voltage still drops when running my A/C full blast, but not nearly as often.

Wow. $70 for ~20 feet of 10 AWG, a relay, and a fuse holder. GTM sure does love their stuff...

The fuel pump is really drawing that much? Even at idle?

Yeah like this one

Autoplicity.com

I don't see how using bigger wire to the fuel pump will help system voltage. It will help fuel pump voltage/current but wouldn't that allow the pump to put more drain on the system and make the situation worse? What am I missing here?

Ditto on increasing the wire size will only increase the draw.

Out of curiosity, do you have a new battery because the old one was bad? Have you checked all of the alternator connections?