Next Step

Vehicle specific forum for tuning the Foxbody Chassis Mustangs utilizing the LUX0, GUFA, GUFB, and GUF1 Strategy

Next Step

Unread postby nanserbe » Thu Aug 25, 2016 9:14 pm

Someone mind taking a look at my logs?

I took the A9L2 bin, put in my injector slopes, MAF, etc. and did a couple pulls.

It runs rich (10.5-11) when you get on it, during cruising and light accel it seems like it does fine.

Also kind of seems like I have a hanging idle as well...

Looking for input on what to do next, I'm a little lost in translation in the fuel writeup.

Thanks!
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Re: Next Step

Unread postby nanserbe » Thu Aug 25, 2016 9:14 pm

Another
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Re: Next Step

Unread postby nanserbe » Thu Aug 25, 2016 9:14 pm

Another.
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Re: Next Step

Unread postby decipha » Fri Aug 26, 2016 12:10 pm

calculate the fuel error at each mafv point and post back with what you come up with

hanging idle is dashpot, go kick up the dashpot decay rate function
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Re: Next Step

Unread postby nanserbe » Fri Aug 26, 2016 9:08 pm

decipha wrote:calculate the fuel error at each mafv point


What's the best way to do that?

Really new at Tunerpro, sorry.
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Re: Next Step

Unread postby decipha » Fri Aug 26, 2016 9:11 pm

while accelerating hold it steady at a specific mafv and after 10 sec see what the fuel error gauge reads
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Re: Next Step

Unread postby nanserbe » Mon Aug 29, 2016 2:57 pm

decipha wrote:calculate the fuel error at each mafv point and post back with what you come up with

hanging idle is dashpot, go kick up the dashpot decay rate function




Here's what I came up with so far.

Code: Select all
VMAF LAMBSE1   IEGO1   Error 1   LAMBSE2   IEGO2   Error 2   WBO2   WBO2 Lambda   WBO2 Error   Error Avg
4.52   0.805       0.89    1.085   0.805   0.87       1.065   10.03   0.682312925   0.877312925   1.075
3.76   0.828       0.88    1.052   0.828   0.87      1.042   10.71   0.728571429   0.900571429   1.047
4.49   0.805       0.88    1.075   0.805   0.84      1.035   10.06   0.684353741   0.879353741   1.055
3.8   0.875        0.86     0.985   0.875   0.83      0.955   10.53   0.716326531   0.841326531   0.97
3.76   0.828       0.9    1.072   0.828   0.87      1.042   10.36   0.704761905   0.876761905   1.057
4.49   0.805       0.9    1.095   0.805   0.88      1.075   9.61      0.653741497   0.848741497   1.085


Also, how much should I increase the dashpot decay at a time?
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Re: Next Step

Unread postby decipha » Mon Aug 29, 2016 6:04 pm

i dont understand that non sense you posted all you need is the mafv and err% only 2 columns

go multiply it by 2 then start honing it in
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Re: Next Step

Unread postby nanserbe » Mon Aug 29, 2016 9:01 pm

Do they need to be spot on with my MAFv or simply close?

It's hard to get it to hold exactly at say 4.52v for 10 seconds.
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Re: Next Step

Unread postby decipha » Mon Aug 29, 2016 9:11 pm

it has to be within half of the next point

so say for example you have 1.75, 2.00 mafv and 2.25 mafv as the next point up, in order to calculate 2.00 mafv you have to keep it between half of the next points otherwise it will be incorrect, so between 1.875 and 2.125 for the full 10 seconds for the hegos to control fuel accurately, ideally you want it within 0.03v when doing these error calcs, if you csnt hold it within 0.03v then you prob have some maf turbulence
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Re: Next Step

Unread postby nanserbe » Mon Aug 29, 2016 11:44 pm

Okay, round 2 of posting.

My vMAF numbers were as close as possible, and I wasn't able to really get below 1.0v so I'm not too worried about those. I calculated my error by dividing lambda/lambse as mentioned on the fuel writeup page.

I should mention that I averaged out the HEGO's (IEGO1 & IEGO2) for my lambda since sometimes they were a tad different left vs right. I do have an innovative LC-1 logging, so if I should use that for my calculations instead let me know.

vMAF` Error %
4.516 1.093
3.756 .803
2.982 .851
2.403 .810
1.831 1.016
1.354 .840
0.978 N/A
0.639 N/A
0.557 N/A
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Re: Next Step

Unread postby decipha » Tue Aug 30, 2016 6:23 am

why are your maf points so far apart? you need a lot more resolution than that

that's some pretty stout errors, you definitely need to dial it in

if your maf is calibrated for 24s why not load that in?
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Re: Next Step

Unread postby nanserbe » Tue Aug 30, 2016 9:14 am

decipha wrote:why are your maf points so far apart? you need a lot more resolution than that

that's some pretty stout errors, you definitely need to dial it in

if your maf is calibrated for 24s why not load that in?


That is the range of voltages from the flowsheet I got with my MAF from PMAS calibrated for 24's. Was going by your "ideally you want the minimal amount of points", but I will try the Fox 24# next.

Do I multiply my error by my kg/min rate for each point to get the curve moved in the correct direction?
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Re: Next Step

Unread postby decipha » Tue Aug 30, 2016 11:53 am

you want the minimum amount of points that give you the most resolution, 0.25 volt increments fill both that need and the simplicity in dialing it in, that's what I do/recommend

yep simply multiply the error at each mafv point, that's the first step to tuning a mass air ecu
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Re: Next Step

Unread postby nanserbe » Wed Aug 31, 2016 2:51 pm

Cool, loaded the simplified 24# Ford MAF like someone mentioned in another thread.

Also doubled the Dashpot Decrement rate right column by 2. Had to do it in a calculator manually and re-enter each one due to Tunerpro RT just rounding to the first hundredth.

It's raining out right now, so hopefully tuning will happen once it stops. Just thought I'd give an update since I know everyone is on the edge of their seats :roll:
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Re: Next Step

Unread postby nanserbe » Tue Jun 20, 2017 11:14 pm

Bringing my thread back from the dead here after a move and a long rainy winter.

New injectors (60lb dekas) are in and all values updated. Starts and runs great, just pig rich (8-9:1 under WOT, 12:1 at idle).

Before I start messing with the MAF curve I want to bring my overall fuel into a better range. Was going to bring my high/low slopes up a bit to lean everything out a little, what's a good start to do that?
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Re: Next Step

Unread postby decipha » Tue Jun 20, 2017 11:29 pm

if they are siemens deka 60s then the published injector data is perfect and the maf is the problem

dial in the maf
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Re: Next Step

Unread postby nanserbe » Tue Jun 20, 2017 11:47 pm

Copy that, I'll start logging and messing with the MAF then.

Off-topic, if I have a 180* T-stat, is there anything in A9L2 that I need to change to reflect the temp that changes when open/closed loop happens?
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Re: Next Step

Unread postby decipha » Wed Jun 21, 2017 11:55 pm

nope
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91 4r70w - Skarlett
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93 auto - Danika
94 5spd Rionda
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98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
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00 Explorer 5L - Bernyce

Re: Next Step

Unread postby nanserbe » Fri Jun 23, 2017 9:13 pm

Did a quick log, is this what IEGO1 & IEGO 2 should look like?

Image

It was a pretty slow 3rd gear pull up a hill.
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Re: Next Step

Unread postby SlowBox » Fri Jun 23, 2017 9:20 pm

Yes. That's the computer adding and removing fuel from stoich to make the sensors switch.
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Re: Next Step

Unread postby nanserbe » Fri Jun 23, 2017 9:55 pm

Awesome, wasn't sure since I was having issues with writing the tune to the quarterhorse before this run.

Is the Fuel_Error datalog generally accurate? Could I say, take this run and find my vMAF points that are on my MAF transfer, look at the Fuel_Error for the given point, and multiply that by the kg/hr for the corresponding MAF voltage? Or do I need to calculate it manually somehow?

Picture of that run with more information for fun.

Image

The light lavender is fuel_error. Picture keeps cutting off on right. I attached a full size.
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Re: Next Step

Unread postby SlowBox » Fri Jun 23, 2017 10:14 pm

nanserbe wrote:Is the Fuel_Error datalog generally accurate? Could I say, take this run and find my vMAF points that are on my MAF transfer, look at the Fuel_Error for the given point, and multiply that by the kg/hr for the corresponding MAF voltage?


Yes, and that's exactly how you do it. Ideally you'd take your logs in hot weather because Decipha has the A9L2 set up to add fuel from there as the weather cools off.
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GT-40 upper and lower
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Re: Next Step

Unread postby nanserbe » Fri Jun 23, 2017 11:11 pm

Sweet thank you Troy!

Also, is there any way to set up a keyboard shortcut to start/stop datalogs in TunerPro?
I hate having to use the mouse pad to start one, versus being able to hit the spacebar like in binary editor.
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Re: Next Step

Unread postby SlowBox » Sat Jun 24, 2017 5:04 am

Alt-spacebar and then use shift-[ and shift-] to go forward and back frame by frame.
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GT-40 upper and lower
65mm TB
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A9L/A9L2/GUFB
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Re: Next Step

Unread postby nanserbe » Sat Jun 24, 2017 7:44 am

Whoops, I meant to start/stop recording.

Is there a keyboard shortcut for that?
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Re: Next Step

Unread postby SlowBox » Sat Jun 24, 2017 7:51 am

Cntl-alt-space bar to start, cntl-spacebar to stop I believe. I'm not at my laptop, but I know there's a place in the Preferences menu I think where you can make changes or see what does what.
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GT-40 upper and lower
65mm TB
Decapped injectors
Single 70mm snail
A9L/A9L2/GUFB
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Moates QH v1.6

Re: Next Step

Unread postby nanserbe » Fri Apr 20, 2018 3:40 pm

If I am having hot start issues after swapping to 80lb injectors, what do I need to change?

If I drive the car, stop, let it sit for a few minutes, it will only start if I blip the throttle.
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Re: Next Step

Unread postby decipha » Fri Apr 20, 2018 4:02 pm

you need to adjust the cranking pw vs ect function
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91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce

Re: Next Step

Unread postby nanserbe » Fri Apr 20, 2018 4:19 pm

Any guidance on how much and which direction to start? Up or down 3-5% maybe?
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Re: Next Step

Unread postby decipha » Fri Apr 20, 2018 4:27 pm

just change the cells your experiencing issues with

i take out 20% first and see if its better, if it is take out another 20% and keep trying til u get to the point where it wont start, then simply add the 20% back in and presto done at that point

keep in mind the engine has to be off at least 15 min between restarts for the crank pw to be affected otherwise a warm engine with vapors in it will restart with almost no pw
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90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Vehicle 2 Information: Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce


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