I was recently in a debate with a "know-it-all" and I need a question answered. When over advancing ignition timing will the ecu compensate and actually retard the timing a bit to prevent detonation? The "know-it-all" says it will, I say it wont. FWIW the car is a 95 b18b teg. TIA

 

youre right

 

Yeap you are correct, the ECU wont retard it and if it did then why did honda make it so that you can adjust it??? hahaha.

 

well on the accords
obd1 you can adjust it

obd2 the ecu will adjust itself

all in the computer

 

That's kind of what the knock sensor is for... They adjust the timing in according to the base maps.

 

it will, unless you're using a P28

 

In '95 the B18B didn't have a knock sensor. Only the GS-R (B18C) had one.

I don't think its quite correct to say that the knock sensor does the adjusting.

The timing goes according to its map, either way. It assumes the base timing is set to spec, so if you set your timing a couple degrees advanced, then the whole map will be moved up the same couple of degrees. IF IT WERE A GS-R then the knock sensor would be able to pull back the timing whenever it hears knocking. It doesn't pull back the whole map, & it doesn't remember to stay back for long.