MSPNP MSPNP specific Megasquirt related discussion.
Sponsored by:
Sponsored by:

96 Alternator on an 01 PnP Pro

Old 10-31-2015, 02:23 PM
Thread Starter
Join Date: Aug 2015
Location: Oregon
Posts: 18
Total Cats: 0
Default 96 Alternator on an 01 PnP Pro

I'm starting to plan the wiring for my prepared autocross only car, so here's my first noob question. I want to get the starting, charging, and power distribution sorted out first. I've read all the VVT swap info and the question isn't really addressed for my situation..
01 VVT Engine & 01 factory engine harness
96 Chassis
ECU will be MS PNP Pro MM0105 (2001-2005)

I have both the 01 and 96 alternators. I'd like to run the 96 alternator to keep the chassis wiring changes to a minimum. This choice will of course leave the alternator control connections on the MS at T4 & 3M unused and open.
Will leaving alternator control at the ECU disconnected cause any issues?
If not, is there any advantage to making the necessary changes and running the 01 alternator?
Wino is offline  
Old 10-31-2015, 02:26 PM
Boost Czar
iTrader: (62)
Braineack's Avatar
Join Date: May 2005
Location: Chantilly, VA
Posts: 76,387
Total Cats: 2,295

just turn off the function in software.
Braineack is offline  
Old 10-31-2015, 03:33 PM
Thread Starter
Join Date: Aug 2015
Location: Oregon
Posts: 18
Total Cats: 0

Ahhhh! So I'll have a function function in Tuner Studio that disables the alternator control. Makes sense. When the 96 alternator fails I'll want to switch to a light weight race alternator, so skiping the use of ECU alternator control makes sense for me. Much simpler swap when the time comes.
Like I said, noob question.
Wino is offline  
Old 11-02-2015, 06:52 PM
Supporting Vendor
iTrader: (33)
Ben's Avatar
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,651
Total Cats: 111

I can't disagree with this decision more. Use the 01 alternator, and then you can chose your running voltage for various conditions, including configurable over charge during overrun and shut off at WOT.
__________________ Tech Support
10AE-T|BEGi S4|MSPNP-Pro EMS|Enthuza Duals|6UL|Etc
Track Rat|2001|VVT|MS3-Pro EMS|Enthuza|Exocet in Progress

Originally Posted by concealer404 View Post
Buy an MSPNP Pro, you'll feel better.
Ben is offline  
Old 11-02-2015, 08:17 PM
Thread Starter
Join Date: Aug 2015
Location: Oregon
Posts: 18
Total Cats: 0

Good points Ben, thanks. I'll probably be running a big *** battery on the passenger floor and shutoff at WOT would be a nice feature to have. I'll take another look at the schematics and see what it will take to make it work.
Wino is offline  
Related Topics
Thread Starter
Last Post
General Miata Chat
10-30-2015 12:43 AM
10-27-2015 03:12 PM
10-27-2015 05:43 AM
General Miata Chat
10-21-2015 02:19 PM
DIY Turbo Discussion
10-16-2015 09:33 AM

Thread Tools
Search this Thread
Quick Reply: 96 Alternator on an 01 PnP Pro

Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.