VX lean burn monitor - enhanced how to desired

[GasSavers_grasshopper]

Well the reason I said what I said is because if you read this article:

http://asia.vtec.net/spfeature/vtecimpl/vtec1.html

The author will talk about the 3 stage vtec mechanism and says stage 1 is "Below 2500rpm and with gentle accelerator pressure, neither pin gets actuated. The engine operates in 12V mode with very good fuel combustion efficiency" (which is basically vtec-e with no actuation of vtec).

Then he goes on to say "Stage-1 12V or "lean-burn" operation mode is indicated to the driver by an LED on the dashboard. The 2500rpm cutover from lean-burn to normal 16V operation in fact varies according to load and driver requirements. With gentle driving, lean-burn can operate up to 3000rpm or higher"

I'm not sure if this technology was applied to the earlier 92-95 civics but it seems like lean burn mode on those engines was simply an indicator of whether it was in the first "vtec" stage or not.

[monroe74]

"I'm not sure if this technology was applied to the earlier 92-95 civics"

Maybe you already realize this, but the passage you cited is discussing an engine that didn't exist back then. Other passages in the article discuss the earlier engine, but it's important to be clear about which engine is which.

"it seems like lean burn mode on those engines was simply an indicator of whether it was in the first 'vtec' stage or not."

Both techniques are happening, and they're happening at roughly the same time, but they're still two different techniques. And I don't think it's safe to assume that the VTEC transition is simultaneous with the lean-burn transition.