Besides Service, Parts, Electrical Manuals. What's a good book to get on understanding the ins and outs of Twin Cams? Donnie Peterson's? Or books on what to know when upgrading performance parts?

 

I've read Donny Petersen's Performancing the Twin Cam cover to cover a few times and it has some great info in it but in some areas like tuners it's a little outdated.

 

V-Twin Tuner's Handbook Vol. 1 & 2 by D. William Denish.

 

Donnie has more than one book on Twin Cams which exactly did you get. That's a little disappointing. MoCo now has a online course on how to use SEPST. It's actually a nice free training. If you knew nothing about EFI this would plumb you up. Starts out going through what an ECM is then all the sensors. How they work together. Then lesson 3 it shows you how to use the program. I'm going to look that V Twin Tuners Handbook. That has to be a great resource. When looking online it's hard to tell what's worth it

 

Take your pick.

http://www.amazon.co.uk/s/?ie=UTF8&k...l_1zuycr3ndj_b

 

Donnie Petersen is awesome. Most of it is easy to get even for non motorheads. Start with his "unauthorized guide to Harley Davidsons".

 

I read a lot of Donnies stuff in American Iron magazine .

 

Donnie Petersen has moved to Roseau MN from Toronto.