Heavy Breather kit M8
I thought I'd pass along some observations about Screamin' Eagle air filter kits. I had the High Flow stage 1 kit installed by the dealer on my 2017 Road Glide but I never liked the looks, uses the stock cover. It rains here in Florida a lot and there is no rain sock available. I bought the Heavy Breather cone shaped kit but my question prior to installation was whether the ECM had to be retuned as the kits and airflow are different. I truly couldn't find any answer. Dealer unhelpful.
I installed the Heavy Breather kit this week. I've run it 200 miles. It has a deeper intake sound and seems to make the exhaust note louder, too. It sounds better overall. The performance seems mildly but noticeably better. There is no popping or signs that the ECM needs to be changed.
Thwarting Darwin's Theory of Natural Selection
Last edited by Bunny007; 09-03-2017 at 09:16 AM.