ECU and VVT

[viceroy]

Sorry to start all this again but what would happen if you left the vvt phased from 4500 till max rpm? Would you lose power?

Ill be the first to admit that I know nothing about engines and even less about VVT but I would have thought youd gain more power by keeping the timing advanced by 16 degrees at higher revs?

 

[JAY172]

renault dephase it at 4500rpm for a reason only known to them but im sure its a good one.i would have thought on standard cams leaving it phased after 4500rpm would cause it to lose power.if you would gain power after that point why would renault dephase it.im sure some renault french boffins somewhere know why but i dont.

 

[BenR]

i have no idea why they dephase it.

But since your altering timing, not profile its hard to say without trying. You have the same amount of time with the valve open, the same lift everything. So opening it earlier will see it close earlier.