So I am planning on a cam upgrade to a Woods 22x on a 2018 Road Glide Special. I currently have a Hi-Flow SE AC, Fuel Moto 2-1-2 Ceramic head pipe & Bassani DNT mufflers. I am told that the Bassani's are to free flowing and the bike will suffer on low RPM torque. I want to order a set of Fuel Moto Hi-Rollers but they are out of stock. I am thinking of installing a set of Thunder Torque Inserts into the DNT's while I wait. Does anyone have any experience with these on an M8?? Thanks in advance for your input.

 

Okay so know one has a stage II with Bassani's. How about anyone with large diameter free flowing mufflers?

 

Guess not. So, in light of no responses you should probably contact DK Customs and see if they can give you an idea of how the TTI's would work for you.
Just curious, what tuner are you using?

 

I am using the Powervision and will likely just autotune

 

 

Fuel Moto told me as well as other testimonials about how the M8 is sensitive to low exhaust back pressure. What I don't know is how much this is affected once a stage II cam is installed as it tends to create more compression.

 

It is affecting the max performance on my stage IV. I'm toying with trying these myself.

 

Couple of things happened with my last bike. I lost all my bottom-end torque, felt much worse than stock. I also gained horrible decel popping. Managed to get the decel pop tamed but not eliminated. The bottom end was pretty much gonzo.

Re-gearing was what tuned the bike into a nasty nasty machine. Bottom end was devastating.

http://shop.evolution-industries.com...&product_id=48

 

This happened because you put on large diameter mufflers?

 

2-1 dump pipe. Probably the worst thing for low-rpm torque.