Factory Pro vs. Dynojet

HondaGalToo · 06-07-2006, 2:21 PM

I'm curious...can a shop with a Factory-Pro EC997 dyno create a custom map for a PowerCommander like a shop with a Dynojet dyno and tuning link software can?

gt702 · 06-07-2006, 2:32 PM

If I remember my dynos correctly (been about 5 years since looking into them), the Factory Eddy-Current dyno should be able to do a much better job of calibration development than the Dynojet .... because of its design and ability to hold loads/speeds steady.

The issue is then the skill of the operator and the knowledge of the nobs to turn in the PC. My understanding is the linked system with the DJ is that it mostly takes the operator out of the tuning so that most places will get you a pretty good map. The operator still has a lot to do with it, but isn't as critical if he/she follows the process. If you have a person who knows his business with the Factory and PC, then you should get a good job there too.

Things could have changed since I looked into it, and really don't have experience with the link software, so maybe someone else can add more.

HondaGalToo · 06-07-2006, 6:24 PM

Thanks for the info!

Anyone else have experience/knowledge about these 2 types of dynos?

abtech · 06-07-2006, 6:45 PM

Call Dan, he has some insight on this subject.

BDA116 · 06-07-2006, 6:58 PM

I know Dan took issue with them way back, but I also know a lot of tuners that really like the Eddy Current type.

And doesn't DynoJet now have their own version of an Eddy Current load control dyno?

abtech · 06-07-2006, 10:30 PM

Quote:

Originally Posted by BDA116

I know Dan took issue with them way back, but I also know a lot of tuners that really like the Eddy Current type.

And doesn't DynoJet now have their own version of an Eddy Current load control dyno?

Yes. Dan's issue was (and still is) that Factory states (unequivocally) that it is physically impossible to tune a reciprocating engine by setting a uniform A/F ratio throughout it's range of revolution. They also state that there is no device capable of adjusting the A/F ratio (and relative ignition timing) of a reciprocating engine at a specific RPM. They then state that even if such a device did in fact exist, it could not be measured on any dynomometer other than the one they manufacture.

Heady stuff . . .

Repeater · 06-07-2006, 10:36 PM

clear as mud.

BDA116 · 06-07-2006, 11:33 PM

Quote:

Originally Posted by abtech

Yes. Dan's issue was (and still is) that Factory states (unequivocally) that it is physically impossible to tune a reciprocating engine by setting a uniform A/F ratio throughout it's range of revolution. They also state that there is no device capable of adjusting the A/F ratio (and relative ignition timing) of a reciprocating engine at a specific RPM. They then state that even if such a device did in fact exist, it could not be measured on any dynomometer other than the one they manufacture.

Heady stuff . . .

Ah, I see. Just a bit egotistical and omniscient, eh?

stevecbr93924 · 06-08-2006, 3:12 AM

I work for Dan part time & own a 929. Tuning link is really good software - of course Dyno-jet is going to tell you to only use their dyno & software. For ten years before Dan, I worked at a local dealer which has a dynojet dyno which we've upgraded throughout the years to include datatool software upgrade (leased software that isn't cheap to renew every year) & converting our existing dynojet dyno run w/Eddy current. It's helpful to have the electronic brake & to be able to hold and vary the load - definitely. The best numbers I've seen from Dan or any skilled tuner in 12 years in the business are the bikes (any really) that have a good tech spend time from idle to redline dialing a bike in. Datatool works well, don't get me wrong. Fine tuning after datatool works better on every bike, everytime. Good luck.