1G Insight - Eco Kswap

[serialk11r]

Originally Posted by BongoBennie

It's an a3 head on an a2 block... A3 head will give any K20a2 piston an additional .5cr due to smaller CC.

It's only @5.5psi so the easiest way to drive no boost is by light throttle. The car can be driven fast as a civic without hitting boost.

Ah, I see, good to know.

It doesn't matter how little boost the turbo produces, if you have extra restriction in the exhaust at part throttle, it's wasted energy. If you lose 1psi of restriction you'll pick up on the order of 1mpg from pumping loss reduction alone. Additionally, if the turbo is reducing manifold vacuum, you're reducing the internal EGR effect at part throttle too.

That's what electronic wastegate control is basically for; you'll never see an OEM running a passive wastegate.

[BongoBennie]

Originally Posted by serialk11r

Ah, I see, good to know.

It doesn't matter how little boost the turbo produces, if you have extra restriction in the exhaust at part throttle, it's wasted energy. If you lose 1psi of restriction you'll pick up on the order of 1mpg from pumping loss reduction alone. Additionally, if the turbo is reducing manifold vacuum, you're reducing the internal EGR effect at part throttle too.

That's what electronic wastegate control is basically for; you'll never see an OEM running a passive wastegate.

Yeah, my smart friend suggested an "active wastegate" that can remain open at low power levels, maybe in a later stage

Next mods in store... 3.4:1 FD is ordered
will be going to 08 Civic Hybrid 15" rims .... might stick with 24" and go with 175/65/15 Michelin Energy savers
or
185/55/15 Yokohama ADVAN Fleva 23" which would still be taller ratio than what I have now with the 4.1 FD

I'm also starting to drive a bit slower and actually letting some people pass me, I figured the FD change will also slow down the car a bit

[Gasoline Fumes]

Originally Posted by BongoBennie

I'm also starting to drive a bit slower and actually letting some people pass me

Iron foot now?