jordandalley

This question has probably been asked a few times but I'm getting conflicting answers and I'd like to clarify with a few of the boffins in here...

My MEVI is set to activate at 5,300 rpm but when it activates, my boost drops. I figure, the MEVI feature with boost is completely useless and I would be better off just leaving it off. Anything that drops the manifold pressure during boost has got to be counter-productive right?

Your thoughts???.. ...

t6378tp

iTrader: (69)

your have it set too high, try with it around 48-4900rpms

but the best way to find out is put it on a dyno do a pull with it closed and another with it tied open and it the activation point where they intersec on the graph

jordandalley

I still don't see how a manifold that was designed for a naturally aspirated engine can benefit a boosted one. In understanding how a mevi works, applying the same principals just doesn't make sense... As far as any boosted engine goes it seems that the shorter the intake path the better. The vq30det has a very short intake manifold. So how does lengthening it or adding more volume to compress help to achieve more power?

Flava_24/7

iTrader: (46)

Thats weird that your loosing boosts, my boost climbs up steadily with the MEVI.

t6378tp

iTrader: (69)

then dyno with a usim than with a mevi and you'll see

the lid on your mevi maybe leaking under boost

jordandalley

I had a thought... my boost gauge is attached to the same line as the mevi vac can and actuator. This I suppose could throw the readings off....

t6378tp

iTrader: (69)

seperate them