Ive been reading the faq and alot of links provided here and on pgmfi but still dont understand the relation between
The ignition fuel and injrctor tables.

And also the afr curve how do i know where to start leaning out the curve towards redline.

 

Not sure I understand your question but basically:
ignition table - tells ECU haw many degrees before TDC to fire the coil
fuel table - tells ECU how many milliseconds to hold the injector open

If we're talking about a N/A application, I always target 12:5:1 from peak tq. to the limiter (peak HP should fall somewhere in between).
After peak HP, you could lean it out a bit, but I don't for safetys sake.

 

its NA.
how do i know when to fire the coil ?

 

The objective of ignition tuning is to acheive peak cylinder pressure somewhere between 12 and 16 deg. ATDC. Optimum timing values vary due to different cylinder head efficiencies, cumbustion chamber designs, spark plug locations, engine speed, compression ratios, rod length, stroke, engine mods, fuel, and a few other variables.

If you're thinking about tinkering with an engine, I strongly recommend reading up on basic 4-stroke engine fundamentals first. Draw two lines on a piece of paper and plot out engine events in relation to cam & crank degrees (cam = 360 deg. per engine cycle / crank = 720 degrees per engine cycle). I still do the same when I'm teaching someone to this day.

Internal combustion engines have been around for what, 130+ years now. It's certainly not rocket science if I can understand it, just take it one crank degree at a time.

Wiki's article on ignition timing isn't too bad:
http://en.wikipedia.org/wiki/Ignition_timing

 

lol wikipedia who knew i looked allover and probably missed it in the search results

also few more questions that i wanted to know if im thinking correctly


1 adding MSD ignition or even coil moves the coil outside the dizzy, if were talking about milliseconds now with spark, wouldnt having that extra wire from external coil to dizzy offset the timing a bit?

2 i did a leakdown test few days ago and found that cyl#4 has about 4-8% leak through the rings. other 3 were perfect.
should that be adjusted with individual cylinder trim or still can be tuned all 4 cylinders equally?
this is all new to me i just started reading about tuning few months ago.

im not touching any maps untill i know what im doing lol or at least what the limits are so i dont blow it up

 

you are correct, the signal does take some time, but you're compensating for it when you set timing.

i wouldn't use inv. cyl. trims until you can verify what's going on in that cylinder and you'll have to learn how to accurately read spark plugs to get into that. or put individual O2 sensors on it (not common).

engines are actually very forgiving, until you start pushing the limits with them anyway. if you really want to learn about tuning, i highly recommend installing a true stand-alone ecu. aem is the cheapest & easiest for a honda enthusiast, once you learn engine fundamentals + stand alone management fundamentals = you could tune just about anything.

 

i already have wideband innovative with datalogging program that came with it. using tri-y replica header and installed another o2 bung
i can have 2 individual cylinders reading at one time because both bungs are on the twin pipes not the collector at the end

i also have the oil pressure gauge installed just in case.
leakdown tester, compression tester and some other tools to do troubleshooting.


and finally got the laptop to complete the moates tuning kit( burn2,ostrich, hulog)

i know neptune is more functional but i used moates kit on more than one car so its easier and much cheaper for me to stay with crome for now.
because a chip kit is only 30 bucks and i can chip as many ecus as i need and load basemap on it.

i pretty much want to learn how to do a basetune so i dont have to spend so much time on a dyno and lots of cash...
i will be upgrading the engine and to take it to a dyno after every upgrade to spend few 100 dollars is expensive

ill read some more and come back to this thread then