ECUflash CeddyMod v1 (EcuFlash)

[Ceddy]

Ok, I finally flashed over to settings that actually work with my 850 injectors. It idles a little off at first start up and idle fuel trims are around 9%.

With it idling with a decent AFR (15.2 ish) I went to do a little driving. Cruising around seems to be a little lean and any significant throttle input resulted in a lot of lean. Flooring it resulted in that lean ness and then richens up a bit. Didn't have enough road to really go through a gear.

Is there a reason cruising and throttle inputs suck so much? I would have expected it to be a little better right off the bat.

What adjustments do I need to make to get this tip in situation better?

You can adjust Async Accel Multiplier vs TPS Delta to correct throttle tip in leaness.

But the stock settings should work pretty well on a MAF setup. I suspect your injector settings may not be perfect, and you are compensating for injector size with latency or the other way around.


Are you running Full Time Open Loop? If not, your idle AFR should be around 14.7. Your Wideband may need calibration, or your Front O2 may be on the way out.

 

[VETTE_50_TH]

Any thing on lean spool. I saw you mention it in the other thread but nothing on if its implemented it?

 

[Ceddy]

I maxed out my 1-byte load yesterday & today. I finally ordered a MBC the other day, so once that gets here I'll at least have real boost control until you get ECU boost control working.


If you send me over the new SD, I'll probably give it a go again.

Are you hitting 320 Load with a 16G?

Thats putting you right at the edge of the 2G MAF Limit. And probably around 500 crank HP.


I'll send the new SD version soon. Just got a new laptop and I'm fighting with Win7, want to test a few SD things on my car first.

Any thing on lean spool. I saw you mention it in the other thread but nothing on if its implemented it?

The Lean Spool maps are deleted in the DSM roms because of limited space, code is still there though, just disabled.

I never really looked into getting it working, because it seems most of the Evo guys disable it.

 

[VETTE_50_TH]

Well i was reading how some are using it to REALLY help spool their cars. Some hitting 20 psi by 3k. And if we can do that, that would be awesome. I mean, i know how they are doing it, but its a seperate map for just boost below a certain point then switches. I guess it would be helpful when your in the wrong gear but still are wanting some power.

 

[jrohner]

Are you hitting 320 Load with a 16G?

Thats putting you right at the edge of the 2G MAF Limit. And probably around 500 crank HP.

From 3800 to 4500 RPMs in my 3rd gear WOT logs.

 

[VETTE_50_TH]

At peak torque I am.

Good god man. Secrets. Unveil them now!

 

[Hubbard 0]

You can adjust Async Accel Multiplier vs TPS Delta to correct throttle tip in leaness.

But the stock settings should work pretty well on a MAF setup. I suspect your injector settings may not be perfect, and you are compensating for injector size with latency or the other way around.


Are you running Full Time Open Loop? If not, your idle AFR should be around 14.7. Your Wideband may need calibration, or your Front O2 may be on the way out.

I tweaked that table a little bit. I added 10% and it didn't seem to do much.

I'm not running full time open loop. My car has always idled in the 15 AFR range since I've owned it and am on the same front O2 sensor. I don't have an immediate way of testing my wideband though, but when I get a chance I will.

I'm using the injector size and latencies you gave me, it actually fired up quite well. Based on my fuel trims at idle, I need to increase latency a bit.

I recall seeing somewhere a guide for tuning the car with full time open loop. I think I'm going to go that direction and then use closed loop for dialing everything in. Is there anything wrong with going that direction?

 

[jrohner]

I like tuning full time open loop; fuel trims are stupid.

 

[VETTE_50_TH]

Do you have a big map for the newest release? I have one for the old ceddymod, but not for the newest revision? Does it matter?

 

[Ceddy]

Do you have a big map for the newest release? I have one for the old ceddymod, but not for the newest revision? Does it matter?

Send your email address to: ceddy @ ceddy.us

Version 1.97 is SD 1.0 (2x 2D VE maps)
Version 1.98 is SD 2.0 (1x 3D VE map)

1.95, 1.96, 1.97 just contain fixes for SD nothing else changed. So if you are not using SD, 1.94 is the same functionally.

1.98 is SD 2.0. The MAF rom is tested 100%. I still need to test the full SD rom.


I have added Version Info and Patches/Options Info to newer(1.98+) roms to reduce confusion.

 

[VETTE_50_TH]

Send your email address to: ceddy @ ceddy.us

Version 1.97 is SD 1.0 (2x 2D VE maps)
Version 1.98 is SD 2.0 (1x 3D VE map)

1.95, 1.96, 1.97 just contain fixes for SD nothing else changed. So if you are not using SD, 1.94 is the same functionally.

1.98 is SD 2.0. The MAF rom is tested 100%. I still need to test the full SD rom.


I have added Version Info and Patches/Options Info to newer(1.98+) roms to reduce confusion.

PM sent and email sent

I got the latencies from Mike Deatsch and here they are.

6v-17v

2.31 2.06 1.84 1.70 1.59 1.47 1.38 1.29 1.20 1.05 .95 .64

I thought i need to know the deadtime?

 

[jrohner]

I got the latencies from Mike Deatsch and here they are.

6v-17v

2.31 2.06 1.84 1.70 1.59 1.47 1.38 1.29 1.20 1.05 .95 .64

I thought i need to know the deadtime?

deadtime, latency, different term for the same thing.

 

[VETTE_50_TH]

deadtime, latency, different term for the same thing.

Thanks. Any suggestion on tuning them for open loop. The evo guys said you need to run closed loop and tune the deadtime first before you can run full time open loop

 

[steve]

Depends on how accurate your wideband is.
If you know what the target AFR is in the map and you have the injector global correct based on actual flow testing the difference between target and actual should be deadtime related.

Another way if your not sure about the global is to look at the differences in AFR (actual vs target, richer being positive and leaner being negative) between short IPW spots on the map and high IPW parts. As long as the slope of the line is 0 the deadtime is correct and any offset the correction needed for flow. A positive slope indicates not enough deadtime and a negative slope too much.

 

[jrohner]

I made a field of AFR Error in Evoscan, wideband / afrmap. This makes it easy to look at your logs and see how far off your AFR's are decide how to get them closer. Once you get it close, you can plug use the AFR Error values at different Hz points to fine tune your airflow sensor settings.

I think this is a lot easier than looking at fuel trims.

 

[Ceddy]

I got the latencies from Mike Deatsch and here they are.

6v-17v

2.31 2.06 1.84 1.70 1.59 1.47 1.38 1.29 1.20 1.05 .95 .64

That puts these injectors around +0.600. Ouch!

06v 2.31
07v 2.06 +0.245
08v 1.84
09v 1.70 +0.400
10v 1.59
11v 1.47
12v 1.38 +0.630
13v 1.29
14v 1.20 +0.615
15v 1.05
16v 0.95 +0.500
17v 0.64

Huge Deadtime and very small Pulsewidth at idle, is going to make idle tuning a pain.

 

[Hubbard 0]

Thanks. Any suggestion on tuning them for open loop. The evo guys said you need to run closed loop and tune the deadtime first before you can run full time open loop

My plan is to get the AFR Map to match wideband readings at WOT. Once that's dialed in, use fuel trims to adjust latencies for idle. Then enable full time open loop. That should be about all it takes, right?

I don't want to sound to newbish (probably way to late), but does anyone want to break down tuning for full time open loop, starting from the beginning?

 

[Ceddy]

My plan is to get the AFR Map to match wideband readings at WOT. Once that's dialed in, use fuel trims to adjust latencies for idle. That should be about all it takes, right?

I don't want to sound to newbish (probably way to late), but does anyone want to break down tuning for full time open loop, starting from the beginning?

For Full Time Open Loop:

Tune WOT same as Closed Loop. Adjust Injector Size so WB and AFR_Map match.
(Injector Size increase, makes leaner. Injector Size decrease, makes richer.)

Then tune idle. Adjust Latency so WB and AFR_Map match.
(Latency increase, makes richer. Latency decrease, makes leaner.)

Hopefully in between (cruising in low vacuum and low boost) will have matching AFRs. But you may need to fine tune with the MAF Smoothing table. Log MAF Hz, WB, AFR_Map; and adjust MAF Smoothing at the appropriate Hz.
(MAF Smoothing increase, makes richer. MAF Smoothing decrease, makes leaner.)

 

[Hubbard 0]

So I don't need to do anything with MAF Scaling? Just MAF Smoothing?

 

[GSXeclipsePSI]

Its nice to see a simple lay out to tuning that you just posted ceddy. I know when I 1st started doing all this I didn't know much of what to change.

I can't wait to get to SD 2.0 when I'm done fixing things on the car. I take the turbo out for the new FP manifold since we all got a good price on them and now I see my turbo needs a rebuild (thank ebay) so I'm still waiting for my stuff back but I got my Heavy-duty wastegate so 30psi here I come.

 

[Ceddy]

So I don't need to do anything with MAF Scaling? Just MAF Smoothing?

No, you should only use the Smoothing table. It uses a percent as scaling so its easy to see whats going on. 105% = Add 5% more fuel.


(Think some of the Evo guys use Scaling in their guides. In the end they will accomplish the same thing[Scaling and Smoothing are multiplied together], but Smoothing is a much cleaner way to do it. With Scaling you have to take into account the MAF Adder, and try to figure out how much of a increase will increase fuel how much.)


I prefer to use Smoothing for fuel fine tuning.

And Scaling for different MAFs. (Evo MAF on a 2G)

 

[VETTE_50_TH]

Hmm. Thats interesting. I had to adjust the maf scaling for my evo ecu. Then i had to adjust the maf adder. I also made sure to add more inputs to go through each voltage increment from 6-17V as well as adjust the injector size to around 1100. That should be enough to get the car running. I also have the idle kinda high at 1000 to help with the cams.

Lastly, i copied a tune from an evo with a 50 trim turbo on e85. So, i have a good idea on what AFR's i need and timing too.

 

[GSXeclipsePSI]

My idle is high around 1200 rpms for the cams and motor mounts or I think it shakes a little too much, things like the sunroof cover vibrates or the steering column. I have good idle with my settings. My fuel trims were off by i think -9 but I was using the settings temporary as I was in between parts upgrades over the past few months.

I also noticed better idle and better spark (no holding back) with my COP setup with the dwell time changes.

 

[jrohner]

Just thought I'd post that I gave 'SD 2.0' a try today. It seems as though there are some things to be worked out calculation wise with VE, but the car did run pretty good with it.

If I do get my VE map right, I get the fun of redoing it when my new [bigger] cams come. YAY!

EDIT: Working good now! Thanks Ceddy!

 

[Ceddy]

New Features Suggestions

Anyone have suggestions for new features?

I have started on CeddyMods 2.00


Speed Density 2.0 (3D VE Map) is finished, and being tested by a few people.

I've started on Window Switch Control for the FPS, EGR, and Purge Solenoid.

And am finishing up ECU Boost Control.

And am probably going to extend the MAF Smoothing map beyond the 1600 Hz limit.



Any other features you would like added?