Maps tuned:

Torque limiter, Smoke limiter, EGR OFF, Target Boost, Boost limiter,Iniection duration 00,01,02, Soi 70c 80c and 90c.

I drive at Sea level.

Thanks

I can see where you are coming from but change the last smoke axis to 1200 is too high if you ask me. I have fiddled around scaling up the axis but having done quite a few logs, I fould that the only place a standard car will break through 1200mg airflow is at about 1900rpm and at full throttle, so having a whole column for such a small window is de-calibrating the smoke limiter over too big an area. The ASZ turbo (Garret) tends to taper off down to 1100 up until 2800rpm and then holds about 1030mg until 4100 rpm. At this point boost starts to taper off a little more sharply right down to about 850mg at the highest usefull rpm 4400. it is also for this reason I would move your 70mg values down the rev range and taper them a little lower and earlier in both your torque and smoke limiters. You can actually run at over 73 mg/st between 1900 and 2200rpm with almost no smoke at all......providing you clutch can take it. The car will feel fast as f*ck in most normal driving situations. Your durations and SOI, I feel are WAY too agressive and totally not needed for 70ish mg/st. You will end up with late end of injection times wich will waste fuel and probably smoke but worse, with such advanced SOI times, you could end up with some very high cylinder pressures which will put a huge strain on the conrods, crank and pistons as well as the head gasket.
I'll post two of my maps tomorow and a few logs too and they are done in very differnt ways but feel very similar to drive. I would like to attract some critisism anyhow :)

Oh and sorry to critise again but I noticed your N75 is standard, if you can try and log your boost requested and your actual boost at full throttle, in one pass from 1500rpm to max revs. I would wager a bet that your boost will spike way above what you wish it to and that your N75 will need its values increase to reign it in a little......

Thank you for your posts !

Critics are always welcomed ;)

This is my first map iv done touching SOI and duration ! My first map was a "basic" tune.Soi and duration all stock.

At this map i tried to make something "real" and powerful.
Lets talk about SOI first ;)
U think is better to keep SOI stock when im using only 70mg/st ?

Ok I'll talk SOI :)

Obviously VW have made different maps for SOI dependent on the engine temperature and as you can see, generally they start the injection period earlier as the temperature gets colder. This is because the fuel ignites slower at cold temperatures so they need to have it burning a little sooner to make up for this. The SOI is also more advanced as the engine revs increase and this is again to allow time for the burn to take place and actually "keep up" with the speed of the piston, the idea being that the fuel is actually alight by the time the piston reaches top dead centre. Ok then, another reason to advance the SOI is to allow a longer period of time for the injector to inject more fuel, if the software is modified for this reason, any SOI mods should match up with similar mods to the duration tables but also care should be taken not to start the injection too early as the fuel could be well alight while the piston is still approaching top dead centre and if this occurs a very high pressure "explosion" will occur that pushes the piston the wrong way to begin with and can cause damage/create noise etc.
It can also be noticed there is a large block where the SOI all takes place at 15 degrees before top dead centre. My belief is that as the turbo is off boost, VW have advanced the SOI in order to allow what would be a slow burn given the lack of boost. It can also be noticed that at lower fuel requests and low RPM the SOI actually takes place after TDC. My belief is that VW have done this to allow for a quiet tick over and also to allow a very late burn in order to keep the catalytic converter heated in these conditions. Im sure a couple of degrees added here would improve throttle response and fuel consumption during slow driving, i have noticed that adding a couple of degrees cures the sometimes lumpy tickover of this engine. Im guessing from your post that you know how the ecu selects which duration maps it uses dont you? :?:

kwempe wrote:Ok I'll talk SOI :)

Obviously VW have made different maps for SOI dependent on the engine temperature and as you can see, generally they start the injection period earlier as the temperature gets colder. This is because the fuel ignites slower at cold temperatures so they need to have it burning a little sooner to make up for this. The SOI is also more advanced as the engine revs increase and this is again to allow time for the burn to take place and actually "keep up" with the speed of the piston, the idea being that the fuel is actually alight by the time the piston reaches top dead centre. Ok then, another reason to advance the SOI is to allow a longer period of time for the injector to inject more fuel, if the software is modified for this reason, any SOI mods should match up with similar mods to the duration tables but also care should be taken not to start the injection too early as the fuel could be well alight while the piston is still approaching top dead centre and if this occurs a very high pressure "explosion" will occur that pushes the piston the wrong way to begin with and can cause damage/create noise etc.
It can also be noticed there is a large block where the SOI all takes place at 15 degrees before top dead centre. My belief is that as the turbo is off boost, VW have advanced the SOI in order to allow what would be a slow burn given the lack of boost. It can also be noticed that at lower fuel requests and low RPM the SOI actually takes place after TDC. My belief is that VW have done this to allow for a quiet tick over and also to allow a very late burn in order to keep the catalytic converter heated in these conditions. Im sure a couple of degrees added here would improve throttle response and fuel consumption during slow driving, i have noticed that adding a couple of degrees cures the sometimes lumpy tickover of this engine. Im guessing from your post that you know how the ecu selects which duration maps it uses dont you? :?:

Thank you for ur lesson.

Yes the ecu selects the duration based on Duration Selector.Duration selector choses which duration to chose based on SOI