People have said that the facrory alternator in not internally regulated. I think that it is, I can see what looks like a regulator inside the case. Most new cars are internally regulated too. I beleve the ecu just excites the alt. Anyone know the facts?

best time so far 14.3 @ 101.1mph(no traction)
www.cnnmotorsports.com

definately has an internal regulator

_ _ _ _ _ _ _ _ _

96 Black ESi
91 Red TSI AWD (RIP)
02 WRX


"turnin wrenches for nine hours in the pouring rain, just to get the beast up and running again"

Aerospace Certified TIG welder for Precision Castparts in Portland, OR.

JoshSpair.com

I forget exactly who said it but it came up because I wanted to run the MSnS standalone and people said I would need an external regulator for my alternator. I thought it was internally regulated. Thanks.

best time so far 14.3 @ 101.1mph(no traction)
www.cnnmotorsports.com

it is internally regulated. Look on the alt at the multi wire plug.....that is the regulator portion of the alt. the one red wire is the alt output. The ECU actually switches the reg on and off, if you eliminate the factory ECu you will need to install an old one wire alternator with an external red. I am sure you can make the factory one work without the ECU i just am not sure how, never looked into it.

Terry

I will let you know how I make out.

best time so far 14.3 @ 101.1mph(no traction)
www.cnnmotorsports.com

ECU regulates the voltage. I tried to get one rebuilt and the shop said it had no internal regulator. I've got one with 72k miles that I'll sell to ya for $30 + shipping. Goodluck man!