Quote:
Originally Posted by xntrx
lean burn and vtec, they are independant. Don't get stuck thinking they are connected. You can lean burn even after the change over if the load is low enough.
To clarify:
Lean burn = any time it is low load (assuming gear or temp is within spec).
Vtec (full 16v) = anytime over 2500rpm in US spec d15z1's
Notice from the above, there are 4 possible combinations, since the requirements for each are different.
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Quote:
Originally Posted by xntrx
It has nothing to do with lean burn, its all rpm vtec switch over dependent.
Its technically always using 16v. At low rpm, one only opens very slightly (to promote swirl and fuel pooling), so it might as well be 12v.
Once it reaches the change over (2500 for USDM), to two rocker arms are locked together and fully open. Since you've looked at 3 stage, its the same, just without the extra high lift rocker.
If you search youtube you can find some videos.
Sounds like cheap plugs/wires, or egr.
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Remember? XNTRX told us all on your last thread on the same subject.
why do you think you know more than all the collective minds that put the wiki together on the subject anyway?
If you did, I think your thread would be "this is how it goes" and not "does anybody know?"