Rasher said:
I would agree, they are normally quite up and down, partly due to every bike being slightly different so when cutom mapping small adjustments will go all over the place, and also because the way the bike is by standard set to pass noise and emissions tests.
In my experience many bikes are abit rich at the top (helps stop owners blowing them up by fitting race pipes before returning them to dealer with OE stuff re-fitted for warranty claim) and the mid range (noise / emmissions region) can be awful in stock trim.
Having said that the ECU unleashed map should have got the values about right everywhere ( by eliminating poor settings used by Yamaha for noise / emmissions) and I would guess the shop just added a shade more fuel evreywhere to compensate for exhaust system?
Still not how I want to go, I would prefer a custom map in the stock ECU, power commanders are not the best tool for mapping, the run in parralel intercepting signals and therefore always suffer lag, I know many are unable to even read the throttle position - it was like that on the ZZR as they only intercept injector signals and "work out" throttle position from what they can intercept (rpm and injector timings)
Power commanders are also unable to take into account the multiple maps an ECY may run, many have different steady state ad acceleration maps, a Power Commander correction will affect both - so which one is right when setting up?
Additonally some engines bahave differently in different gears, especially if they are Ram-Air motors so you really need to map each gear individually.
The other thing to consider is the dyno, inertia Dyno's such as Dynojets are not true "brake" dyno's and can only do sweep tests, these can trigger both acceleration and static maps (sometimes on same run) so the settings you obtain may not be all that correct.
My preference is for a custom map using the stock ECU (Where you can alter fly timings, ignition and fuelling - per cylinder and per gear) on a dyno that can do both Static and sweep runs (such as a Dynapro) which will allow allow perfect mapping under all conditions.
Hoping to be able to get this sorted in the UK with an ECU mapping specialist, the end result should be better than any off-the-peg / Power Commander remap out there and at similar cost.
Most of your comments regarding Dynojet are outdated, incorrect. You really should update your outdated "knowledge" before posting such statements that might mislead others. I'm not going into the various incorrect statements you've made, as I have done that many times before in the other topics that are Dynojet related, so that would be just a waste of time.
Before you post more of that nonsense, please update your knowledge by either contacting one of the Dynojet Approved Power Commander Tuning Centers (These centers are equipped with a Dynojet
Eddy Current Dynamometer with real-time Air/Fuel Monitor), or thoroughly read the information on their website regarding the PowerCommander (which allows you to map each gear and cilinder individually) and related modules, and so on and so forth......
Start here:
http://www.powercommander.com/powercommander/Default.aspx
then this:
http://www.powercommander.com/downloads/Support-Released/Catalogs/2012Dyno_layout-a-WEB.pdf
and this:
http://www.dynojet.com/motorcycle_dyno/250ix_dyno/
Yes, rewriting the ECU would be the best way to modify it, but that is not something that is
A: Easily possible for any ECU
B: Would require thorough knowledge of tuning and the engine characteristics
C: Require a lot of dynotime trail and error
D: Not easily available for each and everyone of us
E: Involve a lot of time, expertise, equipment, hence be relatively very costly
Therefore many folks choose to install a PowerCommander, preferably with AutoTune and ideally have a custom map made that AutoTune will auto-adjust when environments variables change / provide input.
Which may not be the "in all situations and at all times" perfect solution taking all possible combinations of all possible ECU parameters/variables into consideration, but a much more realistically and practical solution for 99,9% of us mortal beings.
