When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Does anyone have the specs and or pictures of the placement for the O2 bungs when running a Thundermax. I am about to order a Thundermax for the bike and just want to take care of the headpipe now while the weather sucks. Thanks for any help guys. Any tips from you guys when running the wiring would be greatly appreciated. I had one on my Dyna but paid a shop to do my work like an idiot. I am fully capable of doing this, just need some knowledge help.
I recommend as close to the exhaust port as you can. I had mine at about 1 1/2 inches for my wide band o2 sensors on my 2010 ultra I put cams in. I presume this will hold true on any head pipe you use. Mine were V&H true duals.
Last edited by Tripleshot; Mar 6, 2015 at 12:06 PM.
Ok so I've now come to another fork in the road. What are our stock head pipes made of? I went to order a set of O2 bungs and I'm not sure which material to buy.
I used the headers as shown in the link which meant I got the right size bungs and was able to ditch the cat at the same same time. I am very pleased with the result, including a slightly deeper exhaust sound.
The second link shows you the placement of the 18mm bungs up near the top of the headers.
I have already eliminated the Cat in my pipes. I just don't see by studies any real advangate of switching out head pipes. Especially as I have already removed my cat. Thanks for the link though guys that gave me a great view of the placement. Wish it was a bit more clear and up close.
This may help you with the rear bung placement. You can see it has to be angled a bit so the sensor sticks out into the space behind the rear cylinder.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
O2 Bung Placement for Thundermax?
