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questions after 1st tuning session

Old 04-24-2007, 10:31 AM
  #1  
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Default questions after 1st tuning session

wuzzup,

I tried tuning my car last night for the first time. I was only trying to tune the afrs on vacuum side of things, to get used to the process. I have a 1989 integra with .42/.48 t3 turbo. For tuning, I have a chipped ecu running turboEDIT, an ostrich emulator, and a datalogging cable.

So my first question:
How long does it take turboEDIT to recognize changes you make in the fuel tables while RTP with ostrich? Sometimes it felt as if all the changes I made had no effect. However, I would do a pull, put the car in neutral, and change the cells I saw needed changing, then drive again. I would never turn the car off or anything else. Tuning the idle worked fine this way, so, I donít know if I have to do anything different to tune the car while its under load.

2) How much pre-detonation does it take to kill piston rings? as in, if I hear it ping, and I let off the gas 1 sec later, can that still be too late?

3) since my wideband is not connected to my ecu, will the datalogging cable only be useful as I tune the ignition timing? I didnít see much use for it while tuning the fuel without the ecu "seeing" wideband values (it can only see narrowband output)

4) I need to verify my afr goals:
-31 -> -8: afr = 14.7
-8 -> +2: afr = 13.5
+3 -> +7: afr = 12
+7 -> +10: afr = 11

Thanx for the help.
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Old 04-25-2007, 12:26 AM
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Default Re: questions after 1st tuning session

The ostrich should change the values right away. I'm not too familiar with them other than the RTP ability, I still run stone-age with a willem burner.
As long as you back off right away when you hear detonation you should probably be ok. I'm guessing you're using some type of det-can or similar to listen to knock? Otherwise if it's quite audible when driving you could be doing some serious damage. Another factor you should look into is plugs reading...they can tell you whether you're too rich or too lean for each individual cylinder instead of the entire combination, can tell you if your engine is detonating, and whether or not you have the correct heat range plug for a complete burn. I made a post with some more in-depth spark plug reading articles, I highly suggest reading them. I can go further into detail on plug reading from my own tuning experiences the past few weeks if you need.
As for your afr's I would go something along this...14.7 area at idle only, part throttle in vaccum should be closer to 13.5 or a hair lower. Once entering boost shoot for at least a 12.5 afr (or a hair richer depending on how your engine responds) all the way up. An 11:1 afr is just too rich and will start mis-firing and fouling out plugs. Make sure to gap your plugs down as well, around a .028 gap should be sufficient.
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Old 04-26-2007, 10:42 AM
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Default Re: questions after 1st tuning session

Originally Posted by slo_crx1
The ostrich should change the values right away. I'm not too familiar with them other than the RTP ability, I still run stone-age with a willem burner.
As long as you back off right away when you hear detonation you should probably be ok. I'm guessing you're using some type of det-can or similar to listen to knock? Otherwise if it's quite audible when driving you could be doing some serious damage. Another factor you should look into is plugs reading...they can tell you whether you're too rich or too lean for each individual cylinder instead of the entire combination, can tell you if your engine is detonating, and whether or not you have the correct heat range plug for a complete burn. I made a post with some more in-depth spark plug reading articles, I highly suggest reading them. I can go further into detail on plug reading from my own tuning experiences the past few weeks if you need.
As for your afr's I would go something along this...14.7 area at idle only, part throttle in vaccum should be closer to 13.5 or a hair lower. Once entering boost shoot for at least a 12.5 afr (or a hair richer depending on how your engine responds) all the way up. An 11:1 afr is just too rich and will start mis-firing and fouling out plugs. Make sure to gap your plugs down as well, around a .028 gap should be sufficient.
cool. thanks for the advice.

the reason why I asked that first question is because all the changes i made didnt seem to do anything at first, but once i turned off the car, reloaded TE and that bin, then all of the changes were VERY obvious (i kept adding fuel, since nothing seemed to work, then when i did the restart, i was SUPER RICH). I think the reason for that was becasuse i still had the o2 enabled.

also, all the numbers in the cells should "smoothly" increase as vacuum and rpm increase, right?
I'm noticing im manually trying to make the make smooth transitions, becsaue some areas, the numbers go from high, to low, to something else!
also, what do those numbers represent...time the injector is open?

Tuning is pretty tough, but I'm just starting to get the hang of it. I just hope i dont have to turn my car off/on and reload turboeditto notice any changes...since that is what i do now.
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Old 04-26-2007, 11:55 AM
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Default Re: questions after 1st tuning session

Yeah, you should see a semi-smooth gradual increase in changes in the cells. Obviously results for entering boost will have a larger change than the rest of the vaccum map. Just be cautious on the timing map...if for any reason it doesn't seem like a smooth pull when entering boost back off some timing. Another way to tell if you have too much timing is my the electrode of the plug...after normal driving the electrode will start to build up a carbon film around it. If the electrode has a 1mm ring around the top that is perfectly clean and shiny, but still has that base film around the rest, back off your timing a hair more. You may notice an increase in afr's once you do that, just nudge them down a tad as well.
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