Stillen Results...

Jordo! · 06-09-2014, 03:19 PM

Quote:

Originally Posted by ART_Auto

OK some updates for you.

I smoke tested the car going directly into the inlet manifold and we have zero leaks. Pressurised the system enough that it was bellowing out the air filters.

Im going to go with the decats are causing a drop in boost and thus a drop in power.

That's not exactly the way to think about this... you can make less boost, and more power, provided the mixture is timed to combust optimally.

BUT... if the mixture is blowing out too quickly (i.e., before peak torque is made in-cylinder) then VVEL timing tuning is in order.

Think of this in terms of optimal cylinder filling -- too much restriction is no good, too much flow is no good. It's gotta be just right.

That said, adding a mechanical "choke" is almost definitely less desirable than adjusting valve overlap.

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