Tech advice needed

Hi folks!
I've just purchased an 04 Z100 (get it in 10 days!) and it has a Muzzy titanium four into one exhaust on it.
It doesn't have a Power Commander on it and I'm simply wanting to know whether this is causing major damage to the engine due to excessively varying air fuel ratios?
Is anyone running a full exhaust without a PC3?
Ideally I can put up with slightly higher fuel consumpion and a slightly lower HP output, for a $1000 PC3.....
Oh, the airfilter is just a standard item if it makes any difference.
Any comments or reccomendations are appreciated.
Cheers!
Darren.
I've just purchased an 04 Z100 (get it in 10 days!) and it has a Muzzy titanium four into one exhaust on it.
It doesn't have a Power Commander on it and I'm simply wanting to know whether this is causing major damage to the engine due to excessively varying air fuel ratios?
Is anyone running a full exhaust without a PC3?
Ideally I can put up with slightly higher fuel consumpion and a slightly lower HP output, for a $1000 PC3.....
Oh, the airfilter is just a standard item if it makes any difference.
Any comments or reccomendations are appreciated.
Cheers!
Darren.