I got a dyno run on my bike but I do not know how to read the print out of the dyno run can anybody tell what this says if I am running to rich or lean or if it is good or bad

Thanks
Bob

[IMG]local://upfiles/17710/70C5F219A66A467C86CB0944DDBCA9F5.jpg[/IMG]

 

Well Bob this is only a 100% Throttle run and I don't know what your Dyno Operator was shooting for as far as theAFRgoes but you have 13.0:1 to 12.8:1 across the graph. Personally for a tune that was completed and delivered to you this isn't bad for a 100% Throttle run. The AFR table in a fuel injected bike is normally set at 12.8~12.5:1 AFR at wide open throttle, however I don't know what year your bike is or what bike it is because it is not documented on your graph. Part throttle runs (step test) should have been made to document the AFR in the lower and mid ranges. I do question the Operators knowledge in the winPEP software.....I see your graph is the752 run made......I doubt this is how many where made on your bike but it does tell me all his dyno runs are in one folder.

 

Well, Bob. It looks like your AFR is good to me. Not rich or lean, I like the AFR right at 13 and that is what you have. I can't tell what type of motor this is by the printout, but based on the numbers it looks like a stock TC 88. The 96 will push up into the 70's on hp and high eighties on TQ when stock, with just an AC and slip-ons and a EFI tune. You have nothing to worry about on being lean. I am not a dyno tuner, so take this advice for what it is worth. Just seen many dyno charts and done some reading. Plus I stayed in a Holiday Inn Express last night.

 

OK, maybe I'm a bit more **** about this stuff, but unless that's a carbed tune I would want a flatter afr line.

 

I am sorry I accidentally miss led you, I put a thunder max ecm on my bike and took it to get a dyno run to see how it was running. Thanks for the feed back it really explained a lot, I had no idea what this piece of paper was tell me.

07 road king
big sucker a/c
rush slip ons 2.0