EE

iTrader: (9)

I'm intending to use throttle kicker and program my timing map in order to have anti lag (oem ECU)

I did some testing yesterday, but i had to keep my foot on the throttle bcs i havn't installed the TK yet..

Have no idea abt the timing I should run though, i tried -15 deg from 2000-7000 rpm and from 20 to 100 load

It worked out pretty fine, but i did have some issues, mainly the rpm didn't want to go down, unless i completely lift off

I didn't have the guts to push the timing further more, or to retard timing at higher loads, bcs i didn't know exactly what i was doing

at idle, i had like 0.1 bar vacum, at 4000-5000 rpm part throttle i had like 0.4-0.5 bar, which is pretty nice


Plz guys if any1 can explain to me how this exactly works, or could post up a timing map to use for anti lag along with some explanation, this would be great

One more thing, what's the lowest value the ecu allows for regarding timing?? how to modify it???


Cheers

Ph3n1x

iTrader: (12)

so essentially ur cruising with -15 degree

EE

iTrader: (9)

noooooooo, that was just for testing, waiting for tephra's map switching

TTP Engineering

iTrader: (465)

You're going to end up melting your exhaust valves as the combustion chamber gases end up igniting as the exhaust valve opens.

EE

iTrader: (9)

^^ isn't this the way ALS works :S ???
what's wrong with what i'm doing compared to "conventional" ALS???

any recomended values for the timing map?? (along with rpm/load) ???


Thx

BarryC

iTrader: (3)

ya need to set your timing retard limit to 255
so you can get the timing to -10,
paste this into evo 7 base,

<table name="Timing Retard Limit" category="Timing" address="173f" type="1D" level="1" scaling="uint8"/>

your car will pop and bang all over the place.

Ph3n1x

iTrader: (12)

Actually no need the max is 61 and minimum is -61, both of which you will never use.

EE

iTrader: (9)

why would i set timing retard limit to 255 if i want to get the timing to -10 only??
in your map you only go as high as 20 units of load, i doubt this will raise your boost at idle or while in gear by much...
i hv an evo 9, your abv rom table is for the evo 7, how would this help me??

EE

iTrader: (9)

this is theoretical, but the ecu rom clips everything under -10 deg.

i was looking to the logs, as i said i put the values to -15, but as i noticed in my logs the timing i was hitting was -10

that's why in the stock map you don't see values below -10 deg

TouringBubble

iTrader: (2)

I've said this before and it can be seen in the timing maps I've posted ...



Timing only registers at -10 ... but I've tuned the map at -14 to -16 because it seems to increase the backfire effect. I've made these changes simply for something to amuse myself and honestly have no idea if it actually functions as a poor man's ALS.

Even real a ALS will decrease the engine braking effect as you've described.

You only need the timing to pull when you are in heavy vacuum (decel state) so don't pull the timing above 30 or 40 load as you cruise in that area of the map.

TouringBubble

iTrader: (2)

And to answer this question based on Scott's response ... an actual ALS ignites fuel in the manifold, not in the cylinder. This means ignition isn't caused by the spark but by the heat in the manifold itself, therefore not affecting the valves.

But that is the first mention of melted valves I've heard in regard to retarded timing on lift off.

EE

iTrader: (9)

well i think ALS can be done both ways (exst manifold or in the cyl) as i've seen some rally cars over here with motec and they activate the ALS by retarding timing etc....

as for the areas where i need to retard timing, as i said before, that was done only for testing purpose, but i'll do it whenever tephra's map switching will come out. This way whenever i need to use als i switch to a different map where timing is tuned for als, whenever i want to just cruise i use the other timing map, if u see what i mean...

of course the map switch and the throttle kicker will both be connected to the same switch, so with one "click" i avtivate the throttle kicker along with its timing map... of course that's just the idea, it might not work, but i think it's realistic...

silex

iTrader: (26)

Only being to retard to -5 ont he Evo7 must be due to the number of bits each cell is addressed for. So not necessary for USDM 8's and 9's.
Very nice, haha! Can't you already do map switching with V4? Did you not richen up the fuel table in the same load/rpm?

EE

iTrader: (9)

nop, there is no map switching yet for the edm evo 9...
i didn't richen the fuel table, but it seems to work fine the way it is..
In any case, im already outside the closed loop (upto 100 load, that's in open loop i guess..), so there should be enough fuel there..

silex

iTrader: (26)

Gotcha, map switching is currently enabled on most USDM ROM's. Forgot to mention, but did you realize Map 1 is for cold starts? Any editing should be done on Map 2. Slips my mind what Map 3 was for.