Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Fiddling with a variable manifold

t vago · 02-01-2012, 07:41 PM

Only way to know for sure is to get a dyno chart of this engine's output, both with and without tuning valve engagement.

I did something like this when I retrofitted a tuning valve onto my intake manifold about 9 years ago:

The blue line was with the tuning valve in the open (off) position, and the red line was with the tuning valve in the shut (active) position.

02-01-2012, 07:41 PM	#6 (permalink)
t vago MPGuino Supporter Join Date: Oct 2010 Location: Hungary Posts: 1,807 iNXS - '10 Opel Zafira 111 Anniversary Suzi - '02 Suzuki Swift GL Thanks: 829 Thanked 708 Times in 456 Posts	Only way to know for sure is to get a dyno chart of this engine's output, both with and without tuning valve engagement. I did something like this when I retrofitted a tuning valve onto my intake manifold about 9 years ago: The blue line was with the tuning valve in the open (off) position, and the red line was with the tuning valve in the shut (active) position.