Howdy Deka,
I'm still trying to get a grasp of this stage I as well. As I understand it now, the stage I air filter kit allows more air flow to compensate for the
lower back pressure when you go to a more open exhaust. I believe it's more critical for EFI bikes along with ECM calibration after changing out exhaust. For Carb'd bikes, you may only need/want to rejet the carb to get back a balanced system when you change exhaust. Since you probably won't be running anything too drastic from stock back pressure, you might not even have to do that. Change pipes and then check spark plugs to see if you've gone too lean.
We're just too high tech now-a-days. Never use to bother with all this...didn't know any better!
Anyone out there explain it better or more accurate, please chime in.
What part of the UK are you in? Wife's from Ipswich, Suffolk! Next time we go over, I want to stop in with the fenlander hogs. Looks like fun!
Cheers, Al
I'm still trying to get a grasp of this stage I as well. As I understand it now, the stage I air filter kit allows more air flow to compensate for the
lower back pressure when you go to a more open exhaust. I believe it's more critical for EFI bikes along with ECM calibration after changing out exhaust. For Carb'd bikes, you may only need/want to rejet the carb to get back a balanced system when you change exhaust. Since you probably won't be running anything too drastic from stock back pressure, you might not even have to do that. Change pipes and then check spark plugs to see if you've gone too lean.
We're just too high tech now-a-days. Never use to bother with all this...didn't know any better!
Anyone out there explain it better or more accurate, please chime in.
What part of the UK are you in? Wife's from Ipswich, Suffolk! Next time we go over, I want to stop in with the fenlander hogs. Looks like fun!
Cheers, Al