OpenFlash Tuning Tutorial: Crawford Billet Power Block Mapping changes

[Hagbard]

Originally Posted by Walla Walla

it's really better, you've worked at the right spot!
how much timing did you remove?

for the gas, if it's 94 petro can, it really have a bad reputation. it contain ethanol, and it seems to produce more knock. but, there are some debate on this...

Ya Petro 94 in it now, Will give the esso 93 another try again after this tank, I pulled 2, but i think i will put 1 back in to see.

[Wayno]

Whenever I reopen the bin file after modifying tables Timing Compensation Per Cylinder A and B, they are returned to the original values. Knock Correction Max Advance A saves fine. What's going on?

[steve99]

Originally Posted by Wayno

Whenever I reopen the bin file after modifying tables Timing Compensation Per Cylinder A and B, they are returned to the original values. Knock Correction Max Advance A saves fine. What's going on?

Increase your user level and it will let you save those tables

[Wayno]

Here are the changes to OTS 1.59 G (EU MT) and I (EU AT) series aussie roms.
Stage 1 has Steve's updates for our shitty 98RON fuel.
I STRONGLY recommend not using these and waiting for 2.0 for G and I series roms and hopefully 91 AKI and BPB built in.

<Removed attachments as 2.0 is released>

[steve99]

Originally Posted by Wayno

Here are the changes to OTS 1.59 G (EU MT) and I (EU AT) series aussie roms.
Stage 1 has Steve's updates for our shitty 98RON fuel.

be interesting to see how the BPB mods go as they add 2 or 3 degrees of timing over 6000 where our 98 ron does not perform to well knock wise

will add those to the knock fix post thanks

[Wayno]

I saw in the BPB beta download shiv has 91 and 93 tunes for everything. When 2.0 is released will it be better to base all our stuff on 91 instead of 93? Or would it be better to copy tables from 91?

[steve99]

Originally Posted by Wayno

I saw in the BPB beta download shiv has 91 and 93 tunes for everything. When 2.0 is released will it be better to base all our stuff on 91 instead of 93? Or would it be better to copy tables from 91?

I only had a quick look at the 91 vs 93 tunes but it appeared the only difference was ignition timing advance over about 6000 rpm and about 1 degree pulled out of the 93 tunes to make them 91 tunes its only worth a few hp top end . Probably try the 93 version if your running United Petroleum 100 octane , else i think we will have to run the 91 version on our 98 fuel , its just going to be suck it and see but its easy changes

[Wayno]

Originally Posted by steve99

I only had a quick look at the 91 vs 93 tunes but it appeared the only difference was ignition timing advance over about 6000 rpm and about 1 degree pulled out of the 93 tunes to make them 91 tunes its only worth a few hp top end . Probably try the 93 version if your running United Petroleum 100 octane , else i think we will have to run the 91 version on our 98 fuel , its just going to be suck it and see but its easy changes

Do you mean this on the right with only 4 values changed in 1 table between 91 and 93...

[steve99]

Originally Posted by Wayno

Do you mean this on the right with only 4 values changed in 1 table between 91 and 93...

Yes,

I dont have BPB so i only looked at the stg1 91/93 even less changes just the base timing B as you found

@Wayno I believe the tune changes for BPB were for V2xx ROM and not meant for V1.5X tunes as their has been substantial changes to the V2xx tunes from V1.5x.

[Silver Ignition]

did another 1st, 2nd, 3rd redline pull


http://datazap.me/u/silver-ignition/...og=0&data=1-12


now, if I look at the chart with FLKC and Ignition Advance selected, it seems like when the FLKC drops, the IA drops to about 26*, should 26 be my target number when messing with the tables in Rom Raider under that engine load? Or is it more complicated than that?

[steve99]

Originally Posted by Silver Ignition

did another 1st, 2nd, 3rd redline pull


Looks like your original fuel was better

http://datazap.me/u/silver-ignition/...og=0&data=1-12


now, if I look at the chart with FLKC and Ignition Advance selected, it seems like when the FLKC drops, the IA drops to about 26*, should 26 be my target number when messing with the tables in Rom Raider under that engine load? Or is it more complicated than that?

Tried to explain it here

http://www.ft86club.com/forums/showthread.php?t=61820

Short version

KCA=Knock Control Advance
IAM=Ignition Advance Multiplier
FLKC= Fine Learning Knock Control

FBKC (Feedback Knock Control)= does not directly impact ignition advance but it will cause the IAM to drop which will effect you ignition advance.

KCA = (values in "Knock Advance Max A table" * IAM ) - FLKC

Total_Timing = Base_timing_B + KCA + other offsets due IAT/coolant temp ect


EG Total_Timing = 25 + 3 - 2

[Silver Ignition]

Originally Posted by steve99

Tried to explain it here

http://www.ft86club.com/forums/showthread.php?t=61820

Short version

KCA=Knock Control Advance
IAM=Ignition Advance Multiplier
FLKC= Fine Learning Knock Control

FBKC (Feedback Knock Control)= does not directly impact ignition advance but it will cause the IAM to drop which will effect you ignition advance.

KCA = (values in "Knock Advance Max A table" * IAM ) - FLKC

Total_Timing = Base_timing_B + KCA + other offsets due IAT/coolant temp ect

my head hurts.








I've read that thread over and over trying to make sense of it but there's just so much that goes into this lol driving me bonkers

[steve99]

Originally Posted by Silver Ignition

my head hurts.








I've read that thread over and over trying to make sense of it but there's just so much that goes into this lol driving me bonkers

OK lets make it easier

Lets assume your IAM=1 which it is and stays at 1 and lets assume you car is warmed up to operating temp and the Intake Air temperature is in a range where no offset is applied.

Total_Timing = Base_Timing_B + Knock_Correction_Max_A + FLCK(read from log as a negative value)


Eg
Total_timing = 26 + 2 - 2(flkc)

[Silver Ignition]

Originally Posted by steve99

OK lets make it easier

Lets assume your IAM=1 which it is and stays at 1 and lets assume you car is warmed up to operating temp and the Intake Air temperature is in a range where no offset is applied.

Total_Timing = Base_Timing_B + Knock_Correction_Max_A + FLCK(read from log as a negative value)


Eg
Total_timing = 26 + 2 - 2(flkc)

So these two numbers are taken from the maps and applied to the FLKC for the final number that we're seeing in the Ignition Advance column? Am I in the area here?


This is so frustrating because I have a really good grasp on how engine performance works but this whole thing is driving me up a wall