Chevrolet Daewoo club - forum

Hi
We have confirmed information that it is possible to change ignition map in our cars by means of jumper. There is special service jumper called "octan selector" and it allows to select mensioned ignition map. Default map is made for 91 octan fuel. It is possible to switch it into 95 octan and also into 87 or 81 octan. The connector is located near the ECU - right hand side in the legs of passenger, under gray cover. It is very close to ALDL connector. The one is white in colour and has 3 wires - white/black, black (ground), white. The black wire placed in the middle is the ground. Sometime one is hidden under ECU. Possible setting below:

1. The wires are not jumered – 91 octan (default setting)
2. white/black to black - 95 octan
3. white to black – 87 octan
4. white to black and white/black to black - 81 octan


If you change the selector into 95 octan , your engine will be much more silent and flexible. The fuel consumption should be also little bit less.


Here are pictures and thread in polish.

http://motonews.pl/forum/?op=fvt&t=5776 ... &start=260

http://motonews.pl/forum/?op=fvt&t=5776 ... &start=120



Similar issue accords to Deawoo Nexia but the colours of wires can be different. Simply the ECU unit is the same type (IEFI-6)

Regards
PAwol/Poland

Tak tomu teda nerozumiem, normalne tam nie je nic? A je to nastavene na 91 octan?

A ked sa prida ten kablik, znizi sa hluk motora a bude sviznejsi?

A kde sa da zohnat ten kablik ci co to je? A ako to funguje?

Nema niekto skusenosti?

no pozriem sa na riadiacu jednotku ci je to volne ,moc sa mi nezda zeby boli espera nastavene na 91okt.,

Thanks Pawol...

No ..este nutne dodat....
ze tych ECU jednotiek je plnaa prdel...

Dost dolezity je dvojpismenkovy kod,, TR ci HE,
..prip nieco inee...tam moze byt...

ECU special pre polsko mali kody SR NR HD DT...

takze sa nemusite cudovat ked tam niekto ten konektor nenajdete...

It's not question of two figures code eg. TR.
Those codes mean only firmware version. Generally there are two types of ECU : IEFI-6 and IEFI-S.
If you have IEFI-6 you have luck. In the IEFI-S it isn't possible to set the octans. We saw cars importerd from Germany which have had IEFI-6 and octan selector. Look at the pictures in the links above

pawol píše:It's not question of two figures code eg. TR.
Those codes mean only firmware version. Generally there are two types of ECU : IEFI-6 and IEFI-S.

Not right..
These two leters is not firmware revision code..
It is code for much combination for ECU..
...if car have build Imobiliser ..(in Daewoo)
...if have lead or unlead benzine (gasoline)...
...if is IEFI-6 or IEFI-S unit type...(as you say above)
...if engine is 8 Valve or 16Valve type...
...if engine have Distributor+Ingnition Coil or one Multi-Ignition Coil (like Lanos or newest Daewoo models)
...country code, for poland, for israel, for central europe (EU), etc.
..and much more...

But the hardware is still the same : IEFI-6. All of those issues you said are made by firmware. Daewoo Lanos without classic spark distributor has completly different ECU called IEFM or something similar. At the moment I'm looking on the table with ECUs used in Espero. There is no special ECU made for Poland. For entire Europe generally there are ECUs with immobiliser or not and, leaded or unleaded fuel. Each type of engine has own types of ECU of course. I don't take into account ECUs for exotic countries like Brasil, Guatemala, Australia, Chile, Israel etc.

...Ok..
I'm looking ECU for Nexia...sorry..
for Espero is not special ECU for Poland...
..but...

I and my neighbour have Nexia wiht 16V engine..
and the code on ECU is HE (Model 96<)
and the hardware is different inside....
...but also..
pinouts is identical...

..and now i don't know where is the thru...

maybe the hardware differences on the car's ECU are depending on the model
..car model before mm/96 and above mm/96... (old type, new type)
( these ECUs has different part number in catalog..)
but the function(s) is identical...

..and these ECU's can be exchanged ....maybe...

Does anyone find octan selector near ECU?
Plenty of our colleagues from polish Espero Club have that one.

Kdysi sem to tu řešil na fóru myslím s Ivanem v galerii je obrázek jerdná se o propojku kde se spojují dva ze tří kabelů takže to stačí jen propojit nemusí se shánět ta originál spojka

petrm ...
..tiez si spominam ze sa to tu riesilo...

finta je ale ftom...
ze mamm teraz dve ECU jednotky, jednu f aute a druhu od Firemana..
..obidve maju kod HE...
a Ta co maam f aute je kurna vovnutry inaa..
nez Ta co som kupil, a Ta co ma suseda f aute..
(este aj jej som sa tam "hrabal", ked mi povedala ze ma spotrebu 7L)

..na kabloch od firemana je 3pin konektor..
..suseda f aute ma 3pin konektor..

..len ja ho tam kua nikde na tom mojom nevidiimm..
...taqze f tej elektrike zacimam mat zase trochu gulaas..
...neviem teda ze kde je "pravda"...

..este si najdem cas a prelozim kabelaaz,
"ci to tam niekto nezamaskoval izolackou do zvezku"

Vyskusal som tie piny po mesiaci prepojit. Vysledok je asi taky, ze motor je o poznanie hlucnejsi a o nepoznanie zivsi . Ale kedze som dalsiu cestu absolvoval neobvyklou trasou a s neobvyklym zatazenim zmena v spotrebe zatial nie je smerodajna.
Doteraz som chodil PP->BA severnou trasou cez zilinu do 100km/h medzimesto (150km), do 140km/h dialnica (200km) a k tomu este 50km mesto (BA) za 9l lpg. Po prepojeni na 95 som presiel 330km cestou cez zvolen priblizne rovnakou rychlosotu a rovnakym pomerom dialnica medzimesto. Akurat som este viezol dalsie osoby a naklad asi 200kg naviac (esperu to ale myslim nevadi) a potom som nenajazdil tych 50km po BA. Vysledna spotreba je zatial 8l lpg, tak uvidim o par tyzdnov.

Chcelo by to ďalšie postrehy, či sa to oplatí prepnúť a aké to má vlastnosti
po prepnutí. Už to tu nikto iný neskúšal? Čo spotreba, výkon, hlučnosť ...?

Vysledok po mesiaci jazdeni je dost nepresny, ale spotreba mi dost lieta, takze nevie presne povedat o kolko to kleslo, mozno len o pol litra, mozno o cely. Na vyssi hluk som si rychlo zvykol, pretoze ten je vyssi len pri nizkych otackach a zaroven akceleracii.

stefan píše:Chcelo by to ďalšie postrehy, či sa to oplatí prepnúť a aké to má vlastnosti
po prepnutí. Už to tu nikto iný neskúšal? Čo spotreba, výkon, hlučnosť ...?

Chystam sa, chystam... preco sa zvysi hlucnost motora, ked sa mu nastavi- aspon podla tohto navodu- spravne okt.cislo...? No ved uvidime