Activate Quasi-fueling

G

gta324

New member
Do I need to change the *KAPMIN* also?

Looking at the AYBN hac I found this!
is this hac wrong then?


LC364 FCB 79 ; FTCLOW:
LC365 FCB 94 ; AFTCHI:
LC366 FCB 135 ; AXLEAN:
LC367 FCB 240 ; KAFDM:
LC368 FCB 0 ; KAPLH:
LC369 FCB 70 ; KAPLL:
LC36A FCB 0 ; KAPMAX:
LC36B FCB 52 ; KAPMIN:
LC36C FCB 1 ; FCOSPH:
LC36D FCB 137 ; FCOSPL:
LC36E FCB 0 ; FCOMAP:
LC36F FCB 52 ; KDFCOG:

but according to the link above
0x036A KAPLL Min Base Pulse 0.793 mSec
0x036C KAPMAX Max Asynchronous Pulse 5.997 mSec
0x036E KAPMIN Min Asynchronous Pulse 0.793 mSec

what is the correct adress?
 
S

smeagol

Active member
I forget the exacting details of how I enabled it, but I spent a lot of time trying to get quasi-asynch to run at lower pw's and then regular asynch beyond idle... i found it nearly impossible to tune the vehicle this way.

FWIW, I run the 50lb/hr injector calibrations in quasi-asynch mode full time because of this.

When i was trying to get it to run where it switched modes, it just seemed that the transition created huge issues. If you had 2 full sets of fuel maps, one for each mode... it might work.. but because there are not enough injector pw correction tables.. I just couldn't make it work well enough. The fueling needed to be scaled so much different for each mode, the transition was anything but transparent. It's difficult to explain my results, and my reasoning for going full quasi-asynch, but I just wanted to offer my $0.02 if you start having issues doing it.
 
turbodig

turbodig

Active member
smeagol said:
I forget the exacting details of how I enabled it, but I spent a lot of time trying to get quasi-asynch to run at lower pw's and then regular asynch beyond idle... i found it nearly impossible to tune the vehicle this way.
Click to expand...

Ditto. I could never get it to transition properly, either.


FWIW, I run the 50lb/hr injector calibrations in quasi-asynch mode full time because of this.

When i was trying to get it to run where it switched modes, it just seemed that the transition created huge issues. If you had 2 full sets of fuel maps, one for each mode... it might work..
Click to expand...

Ya know, this really wouldn't be all that hard.... make a copy of the
VE vs. RPM vs. MAP table, and based on the QAP flag, use one or the
other.

It kinda already has this switch for the F29 /F29s table:

Code: 
d4d8 d650                   LDAB  MPH_70
d4da f1c657                 CMPB  Lc657      ; KVSIDLE -MPH Threshold for idle table determination
d4dd 2203                   BHI   Rd4e2     ;*+$05
d4df b60156                 LDAA  L0156
d4e2 cec473     Rd4e2       LDX   #KVE_MP_F29S
d4e5 2009                   BRA   Rd4f0     ;*+$0b
d4e7 81a0       Rd4e7       CMPA  #$a0      ; compare ntrpmx to a0 =160 = 4000 RPM, upper table limit.
d4e9 2302                   BLS   Rd4ed     ;*+$04
d4eb 86a0                   LDAA  #$a0
d4ed cec41f     Rd4ed       LDX   #KVE_MAP_F29
d4f0 d63b       Rd4f0       LDAB  Z3b   ;load 1bar map variable
d4f2 54                     LSRB        ;shift right... divide by 2. 		
d4f3 c900                   ADCB  #$00 ; in case it's an odd number... like 1
d4f5 bdf5e6                 JSR   Sf5e6  ;call 3d lookup
d4f8 9b73                   ADDA  VOL_EFFIC
d4fa 2402                   BCC   Rd4fe     ;*+$04  ; overflow protection... if ve carries due to the add,
d4fc 86ff                   LDAA  #$ff              ;max is set to ff. 
d4fe 9773       Rd4fe       STAA  VOL_EFFIC


Let's say you replace d4ed with a JSR FB39, (on stock code) and had a
routine that looked like this:

Code: 
LDX   #KVE_MAP_F29
BRCLR MWAF1,$10,NOT_QAP
LDX   #KVE_F29_QAP     ;put the table somewhere in the FBC0 area
NOT_QAP:
RTS

(Note: I really didn't check the above too closely, so don't start hacking
code up with it)

It's pretty light code to do what we want... only trick is finding enough
room for the table. (It's there, I figured I can fit a 27x27 VE table in)

Just thunkin' out loud...


Dig
 
Z

z28camaro

New member
Dig ask Bruce(grumpy) on thirdgen for his $60 .bin. Basically it is $58 that has been modded to 32k instead of the stock 16k. I believe he has also fully commented his mod with instructions. That would give you plenty of space to work with.
 
S

ScotSea

New member
Re: Activate Quasi-fueling

gta324 said:
Hi...

What needs to be changed to get the quasi-fueling mode at idle?

Any adresses?

/N.
Click to expand...

It looks like you are trying to use the $58 code on a V-8. If so, the QAS won't work correctly on a V-8. It is designed for 4 and 6 cylinders only.

Sorry for the late response, I don't come here too often.

Scot
 
S

ScotSea

New member
smeagol said:
I forget the exacting details of how I enabled it, but I spent a lot of time trying to get quasi-asynch to run at lower pw's and then regular asynch beyond idle... i found it nearly impossible to tune the vehicle this way.
Click to expand...

The injector comp tables have to be right on to get this to work correctly. The stock tables are way off. The compensation becomes such a large part of the PW injected that it is hard to get right.

I set up some code so that I could flip a switch to change between normal and QAS mode. This went a long way to getting it to work. I think there were some AE issues also.

Scot
 
You must log in or register to reply here.
Top