When in map 0 it goes to the ecu.

If i get my car flashed, then when i go to map 0 i will be running the flash correct? Is there anything to worry about if i do this?

Is map 0 the stock ecu or does it do any modifications?


ERIK

 

If you use Map 0 you will using the timing , fuel , boost etc from your flashed Evo ECU.

 

then what will the utec control? anything? is it better to just pull out the utec?

I plan on making a race gas map on the utec thats why im askign about this.


ERIK

 

I am not positive, but this is my guess.

Run map "0" on a flashed ECU, you'll be running the reflash ECU and the UTEC will just observer/datalog.

If you switch to a map.. then you can alter the flashed ECU and fine tune it.

 

Yes, in MAP-0 the UTEC is basically an observer.. if you create timing maps on the UTEC, it takes over for the ECU so it overrides the flash completely.. With the current firmware (Production firmware v1.3) your tuning will reflect the injector duty cycles of the aftermarket flash, plus your adjustments..

With Open loop fuel control (the new upcoming firmware if you choose to use the function) It completely overrides the stock ECU (and therefore the flash)

Make sense?

 

cool. sounds good.

So I shouldnt update the firmware until im ready to get a tune becuase the flash will then be useless?

ERIK

 

Nope, 1) the flash is not yet released, and 2) as long as you do not use one of the maps, or if you leave the MAP portions you don't want left to ECU, then it will passthrough the data to the ECU and your flash will still function...

What this means is you can create a boost only map and leave the timing and fuel map blank and still use the flashed ECU's parameters..

 

If you upgrade the firmware the flash will be neutralized in any setting other than map 0.

So yes, if you can wait, and you don't do your own tuning waiting to upgrade the firmware for when you get a tune is probably the best option

 

Just so everyone is aware.. when you apply the new firmware, it defaults to the "Old way" of doing things, so your old maps if you have any will work.. If you enable the open loop fueling, then things change a bit..

 

That is actually not entirely correct.. The settings are only affected in a map that has a value OTHER than ECU.. so you can create a boost control only map.. However, with the new firmware, this applies if you DO NOT ENABLE Open loop fueling.. If open loop fueling is enabled, then your statement applies to the fuel portion of the map.

If you apply the new firmware, and DO NOT ENABLE open loop fueling (Open loop is disabled by default so existing maps would work) then you can correctly pass the data through..

Of course, all of us are waiting for open loop fueling, and therefore it would be the first thing we enabled..

 

Thanks for the clarification Jack. This is good to know that the maps I have now will still be usuable until I enable open loop.

 

When in open loop it does have complete control, but that i only after a certain TPS, no? The ecu still has control down low, and on start up, cold starts,hot start etc.. The utec works like a stand alone with open loop one you cross that tps threshold..

I have data logged with my tuner pro on a reflashed ecu and in stock mode and stock mode(map 0) is not 100% the same values.. My Afr and timing were off in stock mode, so if you are going to get the flash then run in stock mode i would suggest you have the flash done while IN stock mode so the optimum Afr/timing is reached while in stock mode..

 

Yes, thats a good point.. Since my car hasn't had much affect by this, its something I never really took note of..

Yes, the open loop control is taken after a certain TPS value, before that value the stock ECU runs in its Closed Loop control.. When the car is cold, or starting up the UTEC actually can control it with the 0% column (basically any time there ECU is running open loop)

Your point about the map0 having an impact slightly is due to the fact that the UTEC passes through the data and regenerates the signals required, you'll even see a few milliseconds of lag in the data on the output signal. This is a common phenomenon on ANY piggyback and I've also seen this on the S-AFC so your point about ECU Flash tuning with the devices in place is valid, and should be taken into account.

If you notice the stock MAF input values, and output Values, their certainly different slightly, but when logging my timing it was no different.. AFR's were effected slightly (in my case 1/10th of a point in some locations, much of it could be attributed to the impact of the MAF reading from the Aftermarket MAF pipe though)

The honest truth is that the assumption of the developers of the UTEC is used on a bone stock ECU with a stock Flash, where the impact of AFR's is negligable because the maps are already nearly off the scale rich.

Its the Heisenberg Observation theory.. In order to imperically observe a system, you also affect it slightly.. This is a good example of it..

 

Open loop fueling is an awesome feature and will really open the door for alot of you guys running bigger setups.. On some of the bigger injetors, you have to run such large numbers in the fuel map, and i am sure some set-ups will max it out.. Open loop is going to solve alot of these problems.. Also rev limit control is a plus

But i am sure you know this first hand already Malibu J

 

Yeah, I'm just anxious for them to get that new firmware out there and show everyone what its all about. These guys really should hire me eh?? LOL