1992 5.0L mustang MS2 PnP, heads, cam, intake. Idle with AC on?

AUBURN1111

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May 16, 2018

#21

• May 16, 2018

• #21

Driving was MUCH better, still not crisp throttle when you initially blip the throttle. Heres some logs the one ending in 17.42.57 is with AC running.

 

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• 2018-05-16_17.58.14.msl

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• 2018-05-16_17.42.57.msl

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• 2018-05-16_17.37.11.msl

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a91what

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May 17, 2018

#22

• May 17, 2018

• #22

Have not forgotten about you, just real busy.

 

AUBURN1111

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May 17, 2018

#23

• May 17, 2018

• #23

No worries, Im in Greensboro for most of the day. I was looking at some notes I have on injector dead time and required fuel, what I have written down is way off what we have in the tune, but the car seems to run fine. I can't remember which were the numbers you gave me from your excel file for the SD 60 lb injectors. Im ready to see what this thing will do at full throttle.

 

a91what

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May 17, 2018

#24

• May 17, 2018

• #24

I found a little time to take a look and adjust the fuel table for you. The crispy throttle will come once we have the fuel table closer. How is the idle doing?

go ahead and lean on it a little bit but watch the AFR gauge and be sure that it stays below 12.5ish

 

Attachments

• auburn1111 rev.5.1.3.msq

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AUBURN1111

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May 17, 2018

#25

• May 17, 2018

• #25

Ill try it out tonight, thanks! Idle seems ok, It seems to pause at 1500RPM then down to 900RPM, Ill try to make a log showing that, it doesn't drop to the point of cutting the engine off on deceleration with AC on or off.

 

AUBURN1111

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May 18, 2018

#26

• May 18, 2018

• #26

a little more spirited drive today and some logs to go with it. Im noticing almost a surge when wide open or 3/4 throttle similar to when I got to large of a gap on my plugs.

 

Attachments

• 2018-05-18_16.33.57.msl

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• 2018-05-18_16.28.31.msl

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5

5.0Thunder

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Jan 31, 2018

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May 20, 2018

#27

• May 20, 2018

• #27

Looks like the fuel table just needs some cleaning, which is part of this process. A little lean in some places where it could use more fuel, quite a lot of cruise timing, though that might be perfectly fine.

 

AUBURN1111

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May 21, 2018

#28

• May 21, 2018

• #28

Is VE Analysis good for some of this fine tuning? When I run it on one of the posted data logs with cell change to hard, it recommends very small changes to the VE table.

 

5

5.0Thunder

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Jan 31, 2018

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May 21, 2018

#29

• May 21, 2018

• #29

VEAL is pretty good at getting your VE values accurate, though they typically need some manual smoothing after each session. Cell change should probably be Normal until it feels pretty good and the datalogs show the AFR's agreeing with the targets. At that point, you can set it to Hard for fine tuning. It's usually good to highlight your idle cells and lock them out of VEAL as well.

 

a91what

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May 21, 2018

#30

• May 21, 2018

• #30

If you are going to set the veal to normal it is best to use the longest datalog you can. What you can do is get multiple logs (one to the store, one back, one to work ect.) then when you go to open them in the MegalogViewer hold the Ctrl key and select the ones taken while driving on that tune. This will open them all in as one datalog and you will get overlapping data points, I have found this to be the most accurate method by far.
once that is done highlight the entire fuel map and hit the smooth function key.

You also need to remember that a 1 point change from a ve of 50 is a 2% fuel change.

 

stanglx2002

CT Material here

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Jul 7, 2005

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May 21, 2018

#31

• May 21, 2018

• #31

a91what said:

If you are going to set the veal to normal it is best to use the longest datalog you can. What you can do is get multiple logs (one to the store, one back, one to work ect.) then when you go to open them in the MegalogViewer hold the Ctrl key and select the ones taken while driving on that tune. This will open them all in as one datalog and you will get overlapping data points, I have found this to be the most accurate method by far.
once that is done highlight the entire fuel map and hit the smooth function key.

You also need to remember that a 1 point change from a ve of 50 is a 2% fuel change.

Click to expand...

Good tip as I didn't know you can open more than one datalog within Megalog Viewer at one time.

 

a91what

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May 21, 2018

#32

• May 21, 2018

• #32

stanglx2002 said:

Good tip as I didn't know you can open more than one datalog within Megalog Viewer at one time.

Click to expand...

Its little things like this that make me money.

 

a91what

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May 22, 2018

#33

• May 22, 2018

• #33

Hows it coming along? Any issues?

 

AUBURN1111

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May 22, 2018

#34

• May 22, 2018

• #34

Im about to go drive some today, before work sends me out of town for the rest of the week. I noticed hot start after sitting for a few minutes requires me to open the throttle just a bit to get it to start.

 

AUBURN1111

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May 22, 2018

#35

• May 22, 2018

• #35

Enjoy driving this thing! Still have some minor stuff to get figured out, hard to start after reaching operating temp and letting it sit a few minutes, any fast movement of the throttle seems to make it stumble and sometimes a slight back fire 2nd and 3rd gear.

 

Attachments

• 2018-05-22_14.37.10.msl

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• 2018-05-22_12.56.23.msl

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a91what

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May 22, 2018

#36

• May 22, 2018

• #36

That last comment tells me your AE settings are likely in need of adjustment.

 

a91what

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Jun 11, 2018

#37

• Jun 11, 2018

• #37

How's this project coming?

 

Blown88GT

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Jun 15, 2018

#38

• Jun 15, 2018

• #38

If you want A/C to function as it did with the factory ECU (i.e. WOT cutoff, increase idle with A/C on, etc.)
http://forums.corral.net/forums/meg...-issues-no-power-compressor.html#post18033385

 

AUBURN1111

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Oct 17, 2000

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Mobile, AL

Jul 23, 2018

#39

• Jul 23, 2018

• #39

Got a chance to data log tonight, I notice as I go into boost range of about 5-6lbs and about 3700-4000 RPM it feels as though the engine surges as though Im losing spark(did this before, decreased plug gap and it went away.) Im using all stock ignition, plugs gapped to .038 wondering if I need a stronger coil, re-gap plugs tighter, or if I'm way off in what I'm thinking is the issue. Attached current tune and data log.

 

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• 2018-07-23_21.51.56.msl

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• CurrentTune.msq

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Blown88GT

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Jul 24, 2018

#40

• Jul 24, 2018

• #40

You're not using platinum plugs, are you?
http://www.superchargersonline.com/index.php?main_page=page&id=27