When you get a slip on muffler does it require a re-tune? Goin on an '07 of course... Buddy in my riding group told me that tonight... Well does it?

DH

 

yeah, your best bet to get full potential out of it is a power commander or techlusion..

 

What about if the aftermarket pipe is on an older carburated (2000 CBR F4) bike? Would it need to be retuned at all? I have a Two Brothers exhaust on my CBR and noticed a bit of backfiring and (i can't think of the right word right now, but less severe backfiring.

 

You should.....

 

allenpa5 with the carbed bikes, i think you just need to re-jet the carbs...

 

your computer on a fi bike will adjust itself to a limit, i have a slip on and an airfilter on my f4i and it runs great. Of course if you tune it with a PCIII you will see bigger gains

 

unless you have a bike with an 02 sensor this will not happen. same princple as cars adjusting based on the 02 in the exhaust. standard non eu spec bikes withouth 02 sensor can only adjust their mapping based on air temp, rpm, and throttle position. that is why the pc3 is such a great thing, you adjust the fuel curve based on rpm and throttle position on a dyno when the bike is at its optimum temp

without a pc3 the bike at a given temp will add or subtract the same amount of fuel based on throttle position and rpm regardless of stock, aftermarket, or no pipe at all