Hey guys, Im new to the site.. I've uploaded my dyno chart and was looking for some input as to what the Air/Fuel ratios on my bikes set up should be and if this ratio looks ok. I bought the bike (2008 street bob) used from a harley dealership. The bike came with Stage 1 kit and D&D two into one fat cat exhaust. I DID NOT recieve a SERT or PCIII with the bike when i purchased it from harley...im not even sure if the bike was ever retuned by the previous owner. Could someone look at the chart and tell me if the air/fuel chart looks ok? does it look like it's been retuned? Im not into racing the bike, i just cruise around., i only wanna know my engine is running in a safe range or if i should be concerned. THANKS!!!

 

Looks like a generic stage 1 download. Pretty rich above 4000 rpm. Don't get me wrong it is not critical that you get it tuned, but there are gains to be had with a custom tune.

 

Big Joe...will getting the bike tuned increase the longevity of the motor? and would the harley dealership be able to give me the custom tune? It's not easy buying a 400$ tuner then paying another 200-300$ to have it tuned. but if it's gonna increase engine life im all for it. THANKS

 

That's hard to say. Your dyno sheet is only showing AFR at Wide open throttle. Depending on what your part throttle tune is like it could help the engine live longer but probably would have no real effect on engine life. The gains I speak of are in power and driveability. A good harley shop should be able to give you a good tune. Some do only so so with there tuning. All depends on where you take it.

 

Street, where in La are you?