[timinoakton]

Hmmm, I an not clear why external logic to override the 'puter when AC is on, but my pile doesn't have AC so it is immaterial. Looks like I just need to wire a relay to pin 41 so that it can open-collector pull the lead down to ground when the computer thinks it is time to cool. MUCH more elegant than the additional neck-sensor I added, and it deletes one more box from behind my dash. Yep, needs a relay just like any other thermostatic control would.

Cool - will validate that pin 41 pulls down when hot, and I'll move things around to support it.
Maybe I'll do this at the same time that I do HID lights, as that will bork the harnesses as well.

Good call - thanks!
timm

[decipha]

tim.. the purpose in wiring the fan to come on with the a/c is so the high pressure side doesn't get stupid high in the condenser, the fan on will aid in keeping the condenser cool thus reducing excess pressure build up on the high pressure side


the easiest way to do that is to just wire a diode from the a/c clutch to the coil of the fan relay, the diode will prevent back-feeding the a/c clutch so it doesn't power up when the ecu turns the fan on, takes all of 15 minutes to wire up

[vlydeka]

Thank you for the bin. I'm planning to try this cal on my buddy's '93 Cobra...well not the complete cal, just taking some changes that we could use from your cal. Then in couple weeks hopefully I will be able to try it on mine 89 302 engine (stroked to 331).
couple questions:
Why I don't want to keep Fan Min RPM at 1808RPM (A9L2=3600RPM)?
Why Rev limiters lowered to 6500RPM?
For the stroker engine I will have to change displacement from 302 to 331...Do I need to changes something else before first start? I'm using 60# injectors with 60# PRO-M MAF...The problem is, that I bought this setup used and it didn't come with MAF transfer function. So for now I could use 19# injector transfer functions if injector size is not changed in the cal, correct?

Thank you,

[JoeFFR5294]

For the stroker engine I will have to change displacement from 302 to 331..

Yes

Do I need to changes something else before first start?

Is your timing set at 10 deg?

I'm using 60# injectors with 60# PRO-M MAF...The problem is, that I bought this setup used and it didn't come with MAF transfer function. So for now I could use 19# injector transfer functions if injector size is not changed in the cal, correct?

No change the tune to appropriate high and low slopes for 60lb inj. Use a predefined MAF table from EA as close as you can find for your Pro M based on its diameter?

[decipha]

u can take the a9l2 put in the maf transfer and injector values then go out and make powah, its as simple and easy as it gets

set both slopes to 60 the offset is in EA load in the prom 60# curve

[PeteCleary]

Thanks for the a9i cal2! I've moved to this to work on my junk.

[vlydeka]

For the stroker engine I will have to change displacement from 302 to 331..

Yes

Do I need to changes something else before first start?

Is your timing set at 10 deg?

I'm using 60# injectors with 60# PRO-M MAF...The problem is, that I bought this setup used and it didn't come with MAF transfer function. So for now I could use 19# injector transfer functions if injector size is not changed in the cal, correct?

No change the tune to appropriate high and low slopes for 60lb inj. Use a predefined MAF table from EA as close as you can find for your Pro M based on its diameter?

Are you referring to ignition timing (10deg) or start of injection? I don't have a cooling system finished on my engine, so I wasn't able to start yet. Once it's running I will set ignition timing to 10deg with spout unplugged.

Could you please send me a MAF transfer function for 60# PRO-M?


Thank you guys for your help!

[vlydeka]

u can take the a9l2 put in the maf transfer and injector values then go out and make powah, its as simple and easy as it gets

set both slopes to 60 the offset is in EA load in the prom 60# curve

Oh, I understand now....I found the MAF number in EA and injector high and low slopes I should set to 60, or low slope has to be higher?

For my buddy's cal, should I use cobra cal and take changes from A9L2 cal and apply it on cobra cal or should I use A9L2 cal and copy transfer function and injector slopes from his cobra cal?
We swapped the engine from cobra stock to 306 with bigger cam, aluminum heads and etc., but he still has 24lb injectors and MAF from stock setup. I would like to get his engine to run property and then we will change injectors to 48lb, add 255 fuel pump and etc.

[decipha]

better off starting from the a9l2 the other stock binaries don't have the proper stabilized fuel patch so bad stuff could happen

[JoeFFR5294]

decipha

Thanks for the calibration, my car runs noticeably better great throttle response. All I needed to do was insert my injector slopes and mess with my MAF curve and it runs great. It is also nice that you have the tables scaled so they cover load up to 200. In my test run WOT run I went 15 more mph at top end and my load went from 90 peak to 108.

So is my car running in Open Loop all the time now, so all A/F adjusting will be done through my MAF table?

[decipha]

no problem, i do what i can to help out

it shouldn't be running in open loop, it should be in closed loop below half throttle-ish unless you have bad hegos

you still tune it however you would elsewise

[vlydeka]

better off starting from the a9l2 the other stock binaries don't have the proper stabilized fuel patch so bad stuff could happen

We installed quarterhorse chip today in X3Z module with A9L2 cal, all I changed was injector size (high&low) and MAF transfer function. We definitely can feel the difference between X3Z cal and A9L2.
Only it's idling at about 1100RPM. We didn't drive it that much, does it have to learn? Or I need to change something in the bin file?

[decipha]

you need to close your throttle body stop

[89ragtopgt]

don't forget about the Fuel - Injector Offset vs Battery Voltage as in my case for 60Lb injectors it is much different that the stock for the a9L

[vlydeka]

you need to close your throttle body stop

We did that, but it didn't help. I think the problem is the thermostat, he has 180F, it's little bit too low for EFI, correct?

[vlydeka]

don't forget about the Fuel - Injector Offset vs Battery Voltage as in my case for 60Lb injectors it is much different that the stock for the a9L

Could you please post injector offset vs battery voltage numbers for 60lb? I will use 60lb on my engine...
Also, for 24lb injectors, should I just pull numbers from X3Z cal?

[JoeFFR5294]

you need to close your throttle body stop

We did that, but it didn't help. I think the problem is the thermostat, he has 180F, it's little bit too low for EFI, correct?

Have you followed this proceedure to set your idle?
http://www.mustangspecialties.net/musta ... et-up.html

[decipha]

thats a stupid way of setting idle i recommend to not do it and stay away from that site as their info is garbage

i wrote an idle air 101 the math is wrong but the info is there

you can increase the ithbma - throttle body airflow scalar to reduce the idle, obviously idle isnt dialed in, do as the idle air 101 suggests

[EDS50]

thats a stupid way of setting idle i recommend to not do it and stay away from that site as their info is garbage

i wrote an idle air 101 the math is wrong but the info is there

you can increase the ithbma - throttle body airflow scalar to reduce the idle, obviously idle isnt dialed in, do as the idle air 101 suggests

I wouldnt say its garbage info or a stupid way of setting idle but it is how to set the idle with a Anderson PMS and not with a QH. I do like the and prefer the idle air 101 myself for starters.

[vlydeka]

thats a stupid way of setting idle i recommend to not do it and stay away from that site as their info is garbage

i wrote an idle air 101 the math is wrong but the info is there

you can increase the ithbma - throttle body airflow scalar to reduce the idle, obviously idle isnt dialed in, do as the idle air 101 suggests

We tried to set idle from that website, but in order for engine not to die when IAC unplugged I had to open throttle a lot, when I plugged it in, idle went to 2000RPM.
Now we have A9L2 cal in it with displacement changed to 306, injectors slopes set to 24.8 and MAF transfer function from X3Z cal.
When idle set to 896, we idling about 1100RPM, when I set low idle to 550, then it drops to 900. Now even when it's idling at 1100RPM for couple minutes, engine speed drops and engine dies.
My buddy is freaking out .... I have idle screw all the way out and RPM doesn't drop.
He has AC, but it's not on and he didn't eliminate EGR yet, but variables for this hardware I left unchanged in the cal. What is our next step to dial in low idle?

[JoeFFR5294]

thats a stupid way of setting idle i recommend to not do it and stay away from that site as their info is garbage

I recommended it as a start just to get the car to idle, it was not to tune the idle I have found that some folks dont even know the proceedure involving disconnecting the IAC connector

i wrote an idle air 101 the math is wrong but the info is there

What is inaccurate because I was planning on using that to fine tune my idle?

you can increase the ithbma - throttle body airflow scalar to reduce the idle, obviously idle isnt dialed in, do as the idle air 101 suggests

[89ragtopgt]

don't forget about the Fuel - Injector Offset vs Battery Voltage as in my case for 60Lb injectors it is much different that the stock for the a9L

Could you please post injector offset vs battery voltage numbers for 60lb? I will use 60lb on my engine...
Also, for 24lb injectors, should I just pull numbers from X3Z cal?

This is what i have but it will vary for each vechicle.
15.94 0.2813
14.00 0.2813
13.00 0.4375
12.00 0.5938
11.00 0.6875
10.00 0.9063
9.00 1.0938
8.00 1.4063
7.00 2.0000
6.00 3.5000
5.50 7.0000
0.00 7.0000
slopes set each to 61.50
sctba2800 maf meter tweaked to suit
very close with my setup

[vlydeka]

you need to close your throttle body stop

We did that, but it didn't help. I think the problem is the thermostat, he has 180F, it's little bit too low for EFI, correct?

Have you followed this proceedure to set your idle?
http://www.mustangspecialties.net/musta ... et-up.html

Note if you insist on using the idle control ON with the PMS, then you need to go into the PMS and set the idle control ON before setting the idle rpm. Also, you should set the air bypass to 66%, the idle rpm in the pms to 700rpm (the lowest), and the idle timing to +15* as preliminary settings, before actually setting the idle rpm at the throttle body. These are suggestions, each car will vary.

Couple questions :)
How to turn idle control ON?
How to set the air bypass to 66%?
How to set idle timing to +15*?

what is air idle 101, where can I find more information about it?

Thank you,

[crakrz]

Idle air 101

viewtopic.php?f=5&t=17439

[decipha]

it won't let me edit that post so...
heres a revised version with the math updated and a little more info

http://efidynotuning.com/ford/idleair101.htm

[crakrz]

That's a great write up.

[vlydeka]

it won't let me edit that post so...
heres a revised version with the math updated and a little more info

http://efidynotuning.com/idleair101.htm

Thanks for the link. I was reading and got couple questions:
1. Dial in fuel... what variables I'm calibrating to adjust fuel and how I know if it's ok? I have correct MAF transfer function and injectors slopes.

2. make sure your average rpm is within 50ish rpm of demanded idle
I don’t have RPM adders active, but my low idle is at 1100RPM with adjuster screw all the way out. Low idle speed set to 896RPM. What should I do if RPM delta is more than 200RPM not 50?

Update: I found that TB air flow is lower in A9L2 than X3Z (0.4 vs 0.55). I will change this value to 0.55, since I'm using 70mm TB. Is there something else I need to change.
I'm thinking to pull all the changes A9L2 vs A9l and apply it on X3Z, before I start dialing in throttle air. Would that be a good idea?

[decipha]

adjust your fuel how you would elsewise

if you read the air 101 youll understand ithbma tb airflow has no relation to tb size

ITHBMA is the amount of air the ecu can not control!!!

the other binaries arent properly patched

[vlydeka]

adjust your fuel how you would elsewise

if you read the air 101 youll understand ithbma tb airflow has no relation to tb size

ITHBMA is the amount of air the ecu can not control!!!

the other binaries arent properly patched

Ok, so I need to stay with A9L2 cal. I know I need to change these parameters:
1. Injectors slopes and injector offset vs battery voltage
2. MAF transfer function
3. Displacement

Before I can dial in air, I need to lower RPM somehow. Where would you recommend to start? It's idling at 1100RPM with TB screw all the way out.

[decipha]

increase the ithbma scalar