98vtec

Don't trust the map to be displaying useful data in the timing tables. They are not what the engine sees.

-SKUM-

Can you explane some more on this theory?



On my sohc zc, I was pushing 22 - 23* of timing above 4000rpms, And I was running about 12lbs. Oh and it had stock internals.
Once I got my afr's good, I just started bumping my timing .5* at a time untill I heard a toutch of det, and backed it off 1* to be safe. Raped on it for over 20K hard, hard miles. Pulled the turbo off and thew the motor in another car N/A, and its still running.

TomBones

I think you are taking forgranted the fact that I am not such a noob taht I wouldn't set my base timing prior to tunning, so yes,the maps would and should reflect the timing the engine sees.

98vtec

uh no.

you are using an engine management that does not have the ability to turn off the stock honda ignition advancement that is being added on top of the compensation tables at all time. Table timing and actual timing are very different.

table timing does not include IAT, ECT, TPS, gearing and other ignition corrections or the stock honda ignition advance. With crome, it is not a firm representation of actual timing which is what makes plug reading so important.

your 18* of timing on the high cam at 11psi of boost is probably more like 25-26* of timing that the engine is seeing depending on how you have the rest of the advanced table compensations setup.

fior instance. Old motor was a stock bottom h22 with crower cams and Neptune. Table timing showed 30* and the actual timing going to the engine was 40+. Thats without the honda advance disabled. If you have the ability to remove the honda advancement, the tables are more of a true representation but still do not include the other advanced table ignition corrections.

TomBones

That makes sense. I forgot about all that junk. :1

98vtec

all good. Once you get to using a program that can really allow you to fine tune the engine, you really realize what you were missing out on :P