$58 timing with DIS

[Six_Shooter]

Sorry, thought it was a later DIS sunbird.

I hope to get to testing this out again today. Off to get some things done first...

[Six_Shooter]

SUCK....SESS....

Well, I now have a $58 bin that does not lock the timing at 45 to 48 degree BTDC. lol

It follows EVERY change I make, and instantly while emulating.

These are the settings I ended up with:

Initial SA: 64
Max adv: -9.84
Max retard: -70

I had to set the initial SA to 64 degrees to get displayed commanded timing while datalogging to match my actual crank TDC timing. When it's not 10 at night I'll figure out if there's another table that I can use to accomplish the same and make sure that the timing displayed in the datalogging dash at higher RPMs matches that at the crank.

I used the RR XDF.

[delcowizzid]

so just changing reference angle fixed it thats sweet

[1project2many]

You know, I was following everything just fine until you mentioned temp...

Lessee... multiply by 1.8, carry the six, now is it add or subtract 32?? ;)

Seriously, very glad to hear this worked out. Set the "time domain to correct spark" at 0x0016 to match the V660. That might make up for the 4 deg difference.

[Six_Shooter]

I'll have to see if I can get that value from a V660 bin.

delcowizzid; it was using an XDF that seems to have correct conversions did the trick. ;)

I drove around for a while tonight tuning $58. At first it seemed to have the very same lean spike that I do with $59, but I had to adjust the inj vs batt comp table in order to get a lean enough idle, that also enriched up the high load areas, and the lean spike seems to be non existent. So I can use that data to hopefully get rid of it in $59.

Now I can tune the Turbo Regal, using $58. Inital on a Trbo 3.8 in an '86 TR should be 33 degrees, correct?
Yee haw!

[RobertISaar]

i'm seeing 152.59uSec in the 91-93 3.4DOHC automatic BIN i happen to have open.

since i have it open.... i also see -9.88* for maximum advance relative to reference pulse. -70.24 for max retard relative to reference pulse.

with the ref pulse accounted for, 50.47* max advance and -9.88 max retard.

[RobertISaar]

i want to say the 3800 ICM has a ref pulse happen at 70* BTDC, but i could be wrong.

[Six_Shooter]

i want to say the 3800 ICM has a ref pulse happen at 70* BTDC, but i could be wrong.

3.8, not 3800. ;) OLD DIS system, that was originally connected to a 1227148 ECM. ;)

I'll look at my values, thanks.

[Six_Shooter]

I had to add the Time delay to correct spark to the "good" XDF, and it has a higher value than Robert is suggesting, at 198.90. So that looks to need adjustment. lol

[1project2many]

I posted these a while ago. Now you want me to remember??

Lessee...
KREFANGL FCB 43 'DEG' SPARK REFERENCE ANGLE
*::EQU N=E*256/90 ::
KTIMELAG FCB 13 'USEC' TIME DOMAIN CORRECTION TO SPARK
KMAXADV2 FDB 122 'DEG' MAXIMUM ADVANCE RELATIVE TO REFERENCE (2'S COM
KMAXRTD2 FDB 65496'DEG' MAXIMUM RETARD RELATIVE TO REFERENCE (2'S COMP)

So those work out to
15 deg reference angle
43 deg max advance
-14 deg max retard
198.9 uSec

These are factory #'s for 1986 SEFI Buick 3.8 turbo.

I also have:

Reference angle = 199 (70 deg)
max advance = 88 (31 deg)
max retard = 65347 (-67 deg)

HTH
Can't stay awake any longer but first set of values is from factory paper while second set is from running 3.8 turbo car.