Has anyone run their CBR On the dyno after doing the pair/pcv mod? If so did you note whether or not it effected the AF ratio detection adversely?

Thank you

 

Of course it affects it that's why you have to block them to do a correct tune.
Don't ask us, ask actual dyno operators.

 

Let me reiterate,

I am aware that it does effect the AF ratio, my question is to how much of a change you experience when you run your CBR on a dyno with a pair/pcv mod in place. I'm not asking someone who does not know (squids), I am asking openly to anyone who does know. I know some people think a dyno operator is an infallible savant but any one of us are capable of understanding the before and after effects of a mod while the bike is strapped to a dyno.

A good answer would look something like:

"Well, my other bike has a similar mod and it runs consistently leaner by about 1 full point afr but above 7 grand about 1.5 points afr leaner, though I must say not too many people take the time to check their afr, or don't bother posting if they do. Some people just parrot what others say, you know how that goes. Good luck"

Joe Schmo

SBR

 

Then what your asking is has anyone ever dyno'd without the mod then done it without changing anything else including temperature and humidity again to compare. Which as you pointed out, most don't do. Otherwise there is no way to know how much it changed anything.

 

All of that is addressed by the correction factor... Same bike, same dyno, same operator...it's a pretty easy data set to handle. Just wondering if anyone has done it and noted the results.

Thanks

SBR

 

I used my "butt dyno" after doing the mod. Made a 50-70 run (don't remember which gear) before and after. Could not tell a difference. I also replaced my plugs shortly after doing the mod and it looked like the bike was running a little rich. I plan on comparing the current set when I pull them but that's a few thousand miles from now... probably next spring...