Power Commander Ignition Module Notes
In my experience, the $350 Power
Commander Ignition module "says" +/- "10", but it really only seems
to change the ignition timing about +/-2-3 degrees (as of at least
02/09). This was backed up by a DJ importer's experience.
According to a customer, dj told him that ignition timing, doesn't affect power very much.
That's just wrong.
Factory Pro has over 30 years of research and development in high accuracy tuning in general and 20 years in producing Ignition Advancers (which REALLY DO change the ignition timing!) and we've been producing dynamometers that read to .1 and .2 HP increments.
real load dyno, under realistic load, multiple DJ Ignition Modules on 600's
and 1000's show that DJ +10 to DJ -10 "DJ degrees" equals aromd a 1%
to 2% HP spread.
How could you change ignition timing a supposed "TWENTY DEGREES" and only affect the HP by 1% to 2%????
You can't change the ignition timing 20 degrees
and only affect the power by a couple percent - That's an obvious fact.
If you had "Best Power" ignition timing set and you retard or advance the timing a REAL 10 degrees, the bike world hardly run, losing around 10% - 20% True HP if you retarded it.
if you advanced it a real 10 degrees, you'd lose a bunch of power, too and also, likely, give it fits of detonation.
Now - I'm still perplexed about the guy who
posted that he gained 7 HP on his dynojet dyno with a "+5" setting on his DJ Ign
Module! - .5 DJ degrees / about
1 REAL degree = 5 hp? and also perplexed about the ignition map that I got from
a DJ sponsored Race team that showed +1 and +2 and -1's in their
"official" map! Lessee? They changed the ignition timing a miniscule
real .2 degree and they could see that hp change?
The 06 R6 that we were working on? It actually wanted more than 10 "dynojet degrees" in quite a few every part throttle positions for Best Power settings and all of the full throttle settings ended up at +5 to +10 "dynojet degrees". Compare that to the zero settings at full throttle that were supplied and the +1, +2 an +3 "dj degree" settings that were supplied.
A significant ignition timing change, that power can be measured would MAYBE be a real 1 degree - but you can only measure the HP change if the fuel mixture is absolutely PERFECT for Best power (NOT to misleading dealership level "AFR tuning") already -
Normally, a REAL 2 degrees ignition timing change will change the power (on a Perfectly fueled engine) by about 1%.
(example 100 True HP > 101 True HP if a "good direction change" OR 99 True HP if it was "the wrong 2 deg direction change").
So - the only reason to run a DJ Ignition
Module is to use a DJ Quickshifter
the DJ Ignition function is, otherwise, essentially $350 useless cost.
When tuning on and EC997 dyno,
(which has the capability of measuring .1 to .2 HP changes), essentially, there
are only a couple of DJ Ign Module settings:
+ or - 5 Dynojet degrees or
+ or 1 10 Dynojet degrees
and maybe "7" if "5" and "10" make the same power
Don't expect huge HP changes - as, as described above, you'll see 1 or 2 hp at best (at least on a real dyno)
So - what does that tell you?
That you need to do testing on a high quality dyne system, like the Factory Pro EC997 .
Then, you too, can learn all these "unpopular" facts!
Like inertia HP isn't real HP in the real world, dj hp numbers are bogus, tuning to an AFR for best performance is a myth....
We helped Jordan Racing develop into the top ranked AMA team they are.
(I'm sure that the guy who got "7 DJHP" with a real about 1 degree (aka: 5 Dynojet degrees) isn't my buddy right about now, though....)
Best regards - Marc