I just put in 60 lb injectors and set the bpc vs desired egr appropiately.

However, I am having a problem with starting the car sometimes. I think that it is too much fuel on start up. IF I hold the pedal to the floor if it does not start the first time it will turn over and start. Since that puts the computer in clear flood mode and does not fire the injectors, it reinforces my too much fuel at crank idea.

My question is the below table the one that I should be modifing to compensate for the too much fuel at crank.


Location 0x0551

CRANK AF VS COOLANT TEMPERATURE

Which is a ratio amount.

... I reduce these values to add less fuel... correct

Also, any suggestions by how much

Please let me know if I am on the right track.

Thanks
-- Tom

 

I used a BPC of 85, and the following start-up setting.

And yes.

F54:
;Crank AF vs Coolant Temperature
;Ratio
FCB 29 ; -40
FCB 32 ; -28
FCB 44 ; -16
FCB 32 ; -4
FCB 36 ; 8
FCB 47 ; 20
FCB 58 ; 32
FCB 72 ; 44
FCB 77 ; 56
FCB 79 ; 68
FCB 84 ; 80
FCB 87 ; 92
FCB 97 ; 104

F56:
;Cold Engine Temp Dependent AF Ratio vs Coolant Temp And MAP
FCB 0
FCB 0
FCB 9
;Ratio 50 60 70 80 90 100 110 120 130
FCB 85, 85, 85, 85, 85, 85, 85, 85, 90 ; -40
FCB 90, 95, 95, 95, 95, 95, 105, 101, 102 ; -28
FCB 118, 118, 116, 116, 116, 116, 116, 116, 114 ; -16
FCB 120, 120, 120, 120, 117, 118, 118, 117, 118 ; -4
FCB 129, 129, 126, 126, 126, 122, 122, 122, 122 ; 8
FCB 137, 137, 134, 134, 134, 131, 131, 131, 131 ; 20
FCB 139, 139, 136, 136, 136, 133, 133, 133, 133 ; 32
FCB 143, 143, 143, 138, 138, 138, 138, 138, 138 ; 44
FCB 145, 145, 145, 145, 145, 145, 145, 145, 145 ; 56
FCB 147, 147, 147, 147, 147, 147, 147, 147, 147 ; 68

F57:
;AF Ratio vs Coolant Temp (Cold Engine & Closed Throttle)
FCB 100 ; -40
FCB 100 ; -28
FCB 115 ; -16
FCB 130 ; -4
FCB 139 ; 8
FCB 141 ; 20
FCB 143 ; 32
FCB 144 ; 44
FCB 145 ; 56
FCB 147 ; 68

 

Grumpy,

Maybe you can help me wrap my head around your post.

I understand the F54
however, the remainder of the chart I am having a tough time following, I understand the values on the right are the temp C.

However the other values I am unsure of what they represent.

I am using tunerpro and this is what my "F54" table looks like,

How would your values fit in my table.

Ex. -40 = what ratio value
-28 = ?

This way It will help me understand this type of data also.

Here is my table as it sits now.




What my guess from your data is:

-40 = 18
-28 = 21
-16 = 26
-4 = ?
8 = ?
20 = 43
32 = 52
44 = 65

etc.

if it was displayed in the chart in tunerpro,
Am I on the right track?

It is not like I am going to put in your values, I just want to unerstand your values and the trends/changes you made.

Thanks
-- Tom

 

Well I have done some more digging.

The tunerpro table is multiplied by .1 soo

when i looked at the hack it was listed

so 2.9 on my chart times .1 = .29 so that must be the 29 in the hack

3.2 * .1 = .32 so 32 etc.

I just dont see in your chart for f54 what the third # is?
Like this from above :
FCB 29 ;18 ; -40

is 29 the original number and 18 is what you set it to?

 

Look again, I reedited it.
Yes, the second value was the old one. I work in source code, so I can leave all sorts of old values, and notes in the .asm

 

Cool thanks alot that clears it up!

Just wasn't sure which was which.