ok drove the car with the rom you sent me. well it drove the best its been since going SD. problems that it still tries to go lean at really light throttle during cruise and during initial accel. the idle is a little rich but i think that you said i should iron that out using maf smoothing. getting on the boost is still a bit rich but that i know how to take out. i am just still lost what to do with the lean issues. i'll email you the log that i just took on my way to class. (i did take out the async stuff and made it stock to see where it was going, i guess i'll add it back and see what happens)

 

Sent you some corrections.

In general the only lean part is at really low RPM where your VE map is reduced the most. What we should do is put your VE map back to something that semi flat again and then adjust the kpa vs load tables until its much closer to disired AFR.

The maf smoothing hack was just something i worked out when 2d ve maps were all that was availiable. Now that 3d is here lets try to work it out there.

 

You did state that but I was under the impression that the actual scaling for the map sensor Im using needed to be plugged into that table to work. It makes more sense now so thank you. Sometimes things dont get explained as thoroughly for me to understand. Im sorry for being difficult.

 

ok i checked the new rom u sent me and i dont understand y u made 230kpa = 250 load when u had it at 200 load before? doesnt that make it richer or am i being dumb and seeing this wrong

 

You never reached 250 load in your test and typically it needs to be richer up there than leaner. When we get to full throttle/boost tuning we'll touch it

 

Roger Captain

 

Well i discovered a huge problem, the damn formula for evoscan wideband is crazy off above 14.7, 15.6 on evoscan is like 17 in zeitronix.

also the last revision u sent me was almost undriveable i still need to go over what significant changes you made because it was extremely lean during cruise and accel. 16-19 afr (zeitronix) car would start to break apart and sputter like hell. so i reflashed at a long red light back to the tune u sent me before this one.

update: going thru the roms i see u lowered load down low where it cruises and i guess i'll bump it up a few and see what happens. also going tru my log i see the AFR column that shows what the fuel table wants (i think) well it shows 14.7 for most like usual but some times it shows 30 somthing then even 104 values???? wtf is that about.

update2: the weird area where afr goes nuts is also where the car goes rich but i remember this was during start up cold

update3: removing the weird afr table data and graphing AFR table vs Wideband shows that overall its lean but when getting on it a bit it seems to be pretty on target a few dips here and there i gotta check on

 

You mean you don't have the wideband connected via a serial port? That does make it more difficult to tune if what i see isn't reality. Seems like your getting the hang of tuning SD though .

 

lol yeah i think finally, i did dial back what u did and averaged the latest rom u sent me and the one before, a little more tweaking should get it close. i am still having a bit of an issue when accel. it goes a bit lean but nothing crazy. (ve table i assume for that but thats an assumption again lol)

the reason i am not logging serial is because the damn drivers i have for the radio shack usb to serial seems to freeze my laptop. (vista drivers no windows 7 avail)

 

Once you get it close keep it open loop and tweak with the VE map keep graphing it so you remain smooth

 

will do captain

 

Zeitronix sells a serial to USB adapter that works like a charm.

 

I got the zeitronix working with evoscan so i emailed you

 

After fixing my SD VE tables to match, then making adjustments to the SD RPM table to get the trims around 14.7-15ish, I went out for a cruise and my car did the same thing as Skylineracer. I came to the stop sign of my apartment, went to accelerate and no go. Looked at my fuel and it went way lean. Feathered enough to get on the road and it cruises fine. Im using the 96533706 ROM. I believe you were working on a 3D VE patch for one Roadspike. Have you been able to finish that? Any other suggestions? Thanks.

 

you should be using the 3d ve map made by Roadspike for full resolution and control over your SD tune, so you can adjust the VE in the troubled areas and smoothen it out.

before on 2d tables the only other ways to adjusting was either MAF comp or forced open loop and adjusting problem area.

Roadspike has filled my head full of knowledge.