Quote:
Originally Posted by ST2008
I'm also wondering if the vacuum has any impact at fuel pressure, thus the mpg. I ask this question because the fuel pressure regulator is controlled by the vacuum and I have inconsistent mpg with my Honda Civic 2000.
See my other thread.
http://ecomodder.com/forum/showthrea...tml#post518225 |
I would say, little to none. Fuel pressure should have no effect on economy, and vacuum should have no effect on fuel pressure. Your variable fillups more likely have to do with driving patterns than anything mechanical.
What you really need is instrumentation, so you can see what your fuel economy is
while you're driving it. The cheapest option is an ELM327 bluetooth dongle (available on Amazonr or eBay for $5) paired with a smartphone or tablet. Other, better options include a Scangauge or Ultragauge.