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One further thought for those folks NOT IN the States!!! We have a law called the Moss/Magnison act! That act states a manufacturer cannot void a warrenty just because a user added modified parts. The manufacturer MUST prove the modification caused the failure. ( I'm sure this is not the case in the UK!!)
Also I would not want to be in the postion of being a "layperson/or non-engine engineer " disputing what caused a failure, if I did not know HOW the TOTAL system worked and/or the modifications effect on said system. How could you defend your modification. How do you KNOW the fuel you added will work with other ECM protection modes? How about the effect of changing/ or NOT changing spark advance as a result of increased airflow?
Fuel is also critical to proper spark advance and "knock". Just because the modification is NOT at Wide open throttle does not mean ther is no effect. Some "closed-loop" fuel control can and does impact open loop. ( U.S. c14's are always open loop, while the UK bikes use closed-loop fuel control, ie O2 sensor feedback. So experiences in the U.S.A. does not directly correlate to the "CLOSED-LOOP" bikes of the UK!!)
You get my point. As I have pointed out other boards, I'm not preaching DO NOT modifiy your engine. I'm merely attempting to shed a little light on the arguement you COULD have at warrenty TIME. It's always better to know in advance than after the fact. That way you can make an informed decision on modifications.
Last edited by FBRR : 02-27-2008 at 04:46 PM.
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