I have an 08 FLSTN. I bought a Zip kit from Zippers Performance. The kit includes a hi-flo air air cleaner with backing plate , your choice of slip on mufflers ( I chose the Krome Werks slash cut ) , wide band oxygen sensors ,
and a ThunderMax ECM with auto tune. It is all very easy to install . The ECM comes pre mapped to the specific type of bike , air cleaner and exhaust setup.
I did these changes after my first 1000 mile service so the oxygen sensors weren't that hard to bust loose. If you have more miles on your bike they might be a little harder to remove but penetrating oil should help get them out. The air cleaner and backing plate is a very simple swap. The ECM is a direct replacement for the stock one , so it's a simple matter of removing the old and installing the new. Swapping mufflers isn't difficult either.
Next you have to initialize the ECM by turning the ignition on a off 3 times .
Now it's just a simple matter of connecting a laptop ( cable is included to connect to the computer ) and checking some settings and making sure the correct map is loaded.
The performance increases are dramatic and there is no decel popping.
ThunderMax is always improving their system and they continually write new maps. They have hundreds of maps for all different kinds of setups. It's easy to log on to their site and download new maps and then upload the new map to the ECM.
With the wide band oxygen sensors and the auto tuner you can now run in
closed loop which means that the tuner is getting constant feedback from the oxygen sensors and is self adjusting accordingly.
I've got no affiliation with ThunderMax though I must sound like a salesman for them. It's just that I am very impressed with their product.
Another advantage to this system is that you can plug a laptop into it and monitor all the bikes sensors and such. You get trouble codes in plain English.
It also saves warranty data that you can view , meaning you can see historical graphs of head temps , rpm's , etc.
It ain't cheap but I have to say it's the best grand I've ever spent.
The bike was so ' restricted ' from the dealership and this kit has really opened it up .
