I forwarded the questions and comments to American Custom that a few of my fellow members here asked regarding their pipes and the effect on the "tuning" of the bike. Here is their response:
Glenn,
Thanks again for everything, we’re stoked on the pictures of your bike and even more pleased that you’re as enthusiastic about what we do as we are. Aside from our testimonials where people have said that there bikes run much cooler, we’ve actually had a local customer who owned a newer model trike that purchased the Power Flex headers with the Bomber mufflers come into the shop to share his findings with us. He had the work done at Sound Motor Sports next door. He actually had a digital temperature gauge, and at the heat shield where the catalytic converter used to be the heat was reduced almost 200 F. Everyone has different opinions when it comes to the EFI, our best resource to back up our opinion is the American Iron article that we talked about when you were in our shop- you can reference the link to that article on our site here:
http://www.americancustom.com/media/news/AmerCustom.pdfThey did that research independently and as their article states- the bike not only performed better, it dyno’d perfectly- all of which they have in writing in the article. Also- aside from the location of the oxygen sensors, a header that has been refit with our “Power Flex” system would be essentially the same as a stock header from an older generation bike (2009 and prior) which never had any issues involving rear cylinder heat or higher motor/oil temps than from what is considered normal. The best testament in response to any of nay-sayers would be your own experience, I’m sure you’ve noticed the positive changes the American Custom exhaust system and nothing beats the word right from the horse’s mouth. Let me know if you need any more information Glenn. Once again, we really appreciate your enthusiasm and your business!
-Eddie
American Custom, LLC