Seems like FIDOSOL is in the wrong forum asking about Honda CBR600!
BTW, my backfire was from the exhaust not air box...
Anyway...
LeFox,
As for the ecmspy tool, unfortunately I am not really a "techy" person and while there appears to be a lot of information available about this software, I am afraid to dive in and possibly screw something up. At this point I just want to solve this specific issue and if switching back to the stock exhaust solves the problem, I will go that route. The V&H sound is actually a mixed blessing and I am sure my wife and neighbors will be happy is I switched the exhaust. Now, since I never rode the bike with the stock exhaust, will I really be diappointed with the performance loss if/when I switch to stock? A 2hp loss/gain does not sound that significant...
Thanks again for all your input.