Tuning results -Alfa 166 136HP

by **tommic** » Tue Dec 26, 2017 2:12 pm

Is it true that the x axes of SOI and RailPressure maps are located at 7BCEC?
Is it true that this x axis is not IQ, but Engine Load ( factor 0,018180) ?

by **Deman** » Wed Dec 27, 2017 6:06 pm

Axes should not be edited if they are used by several maps. Because you break the work of other maps.

by **ceecee** » Wed Dec 27, 2017 8:08 pm

SOI axis is mm3, mm3 axis is NOT always the same for all SOI maps.

by **tommic** » Mon Jan 01, 2018 11:35 pm

Did as adviced, increased rail pressure and advanced SOI so that EOI would not exceed 5°. Car feels more aggresive but i seen more smoke.

by **tommic** » Tue Jan 02, 2018 10:14 am

I have always been curious why SOI map has a dip at beggining, is there a reason for that?
Also this valley makes EOI late 8-10°, actualy i removed this valley to make EOI normal 4-5°, but i don't know why it was at first place.

by **Deman** » Tue Jan 02, 2018 7:21 pm

As an option, I can say. There is still a preliminary supply of fuel, which operates at a speed below 3000 and the midsuper load....

by **ceecee** » Tue Jan 02, 2018 7:53 pm

tommic wrote:I have always been curious why SOI map has a dip at beggining, is there a reason for that?
Also this valley makes EOI late 8-10°, actualy i removed this valley to make EOI normal 4-5°, but i don't know why it was at first place.

Typically by emissions and other injection configs (injectors flow, rail pressure, boost...)

Be careful with higher SOI at EGR zone, specially if EGR is off, higher is not always better. First you should calc real EOI at low speed from logs.

by **jtdpow** » Tue Jan 02, 2018 9:07 pm

ceecee wrote:
tommic wrote:I have always been curious why SOI map has a dip at beggining, is there a reason for that?
Also this valley makes EOI late 8-10°, actualy i removed this valley to make EOI normal 4-5°, but i don't know why it was at first place.

Typically by emissions and other injection configs (injectors flow, rail pressure, boost...)

Be careful with higher SOI at EGR zone, specially if EGR is off, higher is not always better. First you should calc real EOI at low speed from logs.

+1
in my case,( 156 jtd 16v with 2256) best response are in 3 grades ATDC in 3000+ rpm zone and 7 grades ATDC in 2000rpm for fast spool

by **ceecee** » Tue Jan 02, 2018 10:23 pm

jtdpow wrote:+1
in my case,( 156 jtd 16v with 2256) best response are in 3 grades ATDC in 3000+ rpm zone and 7 grades ATDC in 2000rpm for fast spool

Interesting, EOI 3 ATDC is the stock from 1.9 JTD 16v 140 Euro3 at 3.000rpm (4 ATDC for 150 E4 and 2 ATDC for 105 E2/115 E3/170 E4).

by **jtdpow** » Tue Jan 02, 2018 11:26 pm

ceecee wrote:
jtdpow wrote:+1
in my case,( 156 jtd 16v with 2256) best response are in 3 grades ATDC in 3000+ rpm zone and 7 grades ATDC in 2000rpm for fast spool

Interesting, EOI 3 ATDC is the stock from 1.9 JTD 16v 140 Euro3 at 3.000rpm (4 ATDC for 150 E4 and 2 ATDC for 105 E2/115 E3/170 E4).

yes!!,no more performance but the car feels rev more freedly with this EOI than the last one 0 grades