Yosh or dyno

aviomech · #1 (**permalink**) 06-25-2009, 10:33 PM

I have a two brothers exhaust slip-on, running with K&n airbox lid off, pcIII, that I can not find a map for. A local dyno will cost me $400 that I will have to wait 3 weeks to get done. The two brothers cust service had no map and wanted to sell me their juice box to replace my PCIII. No thanks!! I'm also looking at getting a Yoshimura full exhaust as Dynajet has a map for my PCIII and the Yosh setup.

Which way would you go??

Slaytanic454 · #2 (**permalink**) 06-26-2009, 02:16 PM

I'd say you'll probably be fine running the Yoshimura map. The big difference in A/F comes from changing the intake, the exhaust is minimal (Between one aftermarket and another). It will be a little on the rich side because you're only running a slip-on, but not by much, and that's not necessarily a bad thing.

aviomech · #3 (**permalink**) 06-26-2009, 04:23 PM

Well I bought the Yoshi full exhaust...will have by next tuesday. Also picked up a new 13t sprocket to give me little lower gearing for the dunes.

kawareefer · #4 (**permalink**) 09-23-2009, 12:52 PM

hey man how did it go with the yoshimura full exhaustm, i installed one recently and still need the power comander

chevyridinhighss · #5 (**permalink**) 03-10-2010, 12:43 AM

sell me your two brothers?