I purchased this for my 2019 triumph speed twin. Really easy to install. Only after changing the exhaust and eliminating the cat and installing a high flow filter did I notice a difference. Idling is smoother and take off in first gear is much smoother. Takes a little bit of driving for the computer to get the air/ fuel mix right. Glad I purchased this but realized the booster plug website has a product specific for the speed twin. Not sure if it matters or not but this works.
Works like it's supposed to. Super easy install in 2016 Triumph Bonneville T120. Completely eliminated popping and surging. Running K&N air filter with Vance and Hines mufflers.