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Tygen1 · 09-18-2009, 06:10 PM

No MAP on this car. The SG doesn't show any noticable change in the O2 sensor reading. It fluktuates between 13.5 and 15.5 ie. HI/LO. Wish I had a wideband...
I popped the hood and traced the route of the line, it's conected to some sort of valve that is also conected to the PBB and below the TB, so there is vaccum somewhere in this arangement, but that doesn't really mater... Why does unmetered air flow cause better mpg?

09-18-2009, 06:10 PM	#4 (permalink)
Tygen1 Master EcoModder Join Date: Dec 2008 Location: South Jersey Posts: 553 Little Blue - '98 Ford Escort ZX2 Cool Team ZX2 90 day: 44.75 mpg (US) Big Red - '00 Ford Excursion XLT 90 day: 15.53 mpg (US) Thanks: 5 Thanked 45 Times in 29 Posts	No MAP on this car. The SG doesn't show any noticable change in the O2 sensor reading. It fluktuates between 13.5 and 15.5 ie. HI/LO. Wish I had a wideband... I popped the hood and traced the route of the line, it's conected to some sort of valve that is also conected to the PBB and below the TB, so there is vaccum somewhere in this arangement, but that doesn't really mater... Why does unmetered air flow cause better mpg? __________________ Last edited by Tygen1; 09-18-2009 at 09:08 PM..