View Full Version : Stock map with hawk, K&N, breather mod. < 3krpm = poop

06-08-2012, 12:00 AM
Should I lean out the fuel a lil more as I'm pretty sure its running fat, but since there are no O2 sensors on this bike, its all seat of the pants tuning. Ideas, or should I load a racemap to see if its fixes the problem?

06-08-2012, 02:19 AM
Well you bike will be running lean if you have a stock map with aftermarket exhaust and filter. There is an 02 sensor in the rear cylinder header unless it was removed. Use tuner pro RT or possibly ecmspy (if you have a <'08 model) to tune the bike to your altitude, humidity, etc.

06-08-2012, 10:12 AM
If you lean too much you will increase the temps, so be wary of that. As Dallasb said use ECMSpy or TunrerPro, there are threads on this site about how to use them and how to tune. Look to the right ---> for The Tuniversity link.

06-14-2012, 08:02 PM
Sweet. I didn't realize there was an o2 sensor on the rear cylinder. Well then, game on. Time to start tuning.

07-31-2013, 06:53 PM
Won't certain year bikes relearn if driven between 3 n 3.5k for 20 min?
that's what Randy Hawk told me when I spoke with him

07-31-2013, 11:11 PM
ya thats 08+ models.