Factory didn't mislead me. I get my information from various sources, this includes tuners who use DJ's and other dynos and from info available from the Dyno manufacturers themselves. Marc isn't my only tuner, I have paid for the service of many tuners over the years.
Dave, are you saying the the 250i can display digital Hp readings in real time
when using load control? The Tuning Link and WinPEP screen shots in the DJ brochure do not show Hp readings and this capability is not mentioned anywhere. Also, the DJ 250 tuners I've talked with say it can't be done. FactoryPro, Superpro, Land & Sea, MJP and Mustang dynos can do this and advertise the capability.
It could be possible that the tuners I speak with are using earlier versions of the DJ 250 that don't have this capability. If that's the case, then DJ is making improvements and that's good for all consumers. I have heard that DJ is now testing a fast 4-gas EGA module. Maybe they will also add this as an option (this would make DJ dynos more like a FactoryPro). It will come at an expense, though and price has always been DynoJets biggest advantage.
What is mentioned in the 250i brochure is this "...the Tuning Link monitors the current air/fuel ratio at over one hundred and forty different points. At the same time, the Tuning Link automatically calculates the correct fuel adjustment to achieve the user desired air/fuel ratio
Using the 250i, how is the "user desired air/fuel ratio" optimized at any given point? How does DJ train their tuners to determine this?
Although I agree with others here that dyno's don't need to be precise, accuracy is what is important. The riders who make changes and return for dyno runs rely on consistency. Those who tune at home may find this magazine article interesting:
(After re-reading this article, I noticed this statement: "Dynojet unfortuantely cannot calculate horsepower while applying a load through the eddy-current")
I do understand that FactoryPro is trying to better their marketshare by posting links such as this, but the info is from a print magazine, not from FactoryPro. Has anyone found anything, anywhere that says FactoryPro dynos aren't accurate, precise, consistent, or poor tuning tools?
I decided to write here to share what I've learned about tuning, and I am still learning. I also happen to think it is wrong to say someone is full of crap without any reasons to back it up.
CCS SW AM #28
'03 Kawi ZX636R
'00 Duc 748R