High octane increase MPG on VX? - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 08-07-2009, 02:55 PM   #1
Registered Member
 
AlainB7's Avatar
 
Join Date: Sep 2007
Posts: 62
Country: United States
High octane increase MPG on VX?

I do always use 87 octane gasoline in my VX. But 2 time I use 91 octane and my MPG was better. But colt stard is not 1/4 turn. I have to hold for almost 1 second before it start.

I just put 94 octane to se if it will be better MPG.

Also, if I change my stock coil for Neuspeed Sport 1.3/4" drop, it will help on MPG?
__________________

__________________
92 Mitsubishi Galant VR-4 4G63 A/T AWDTturbo 12.122@112.9 mph 0-60MPH:3.6s 50-75MPH:2.4s ,2x 92 Honda Civic VX (4.7l/100km)
Gone in 12 seconds GO FAST WITH CLASS, DON'T USE NOS!
AlainB7 is offline   Reply With Quote
Old 08-26-2009, 07:00 AM   #2
Registered Member
 
kamesama980's Avatar
 
Join Date: Nov 2007
Posts: 742
Country: United States
Location: Columbus, IN, USA
Send a message via AIM to kamesama980 Send a message via Yahoo to kamesama980
higher octane gas is harder to ignite hence the longer cold-startup time. the economy gain probably is from increased ignition advance since it isn't getting any knocking with higher octane (knock sensor input to ecu). with a high-mileage engine this is common because of carbon deposits taking up combustion chamber space (higher compression ratio) or glowing (or both)
__________________
-Russell
1991 Toyota Pickup 22R-E 2.4 I4/5 speed
1990 Toyota Cressida 7M-GE 3.0 I6/5-speed manual
mechanic, carpenter, stagehand, rigger, and know-it-all smartass
"You don't get to judge me for how I fix what you break"
kamesama980 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuelly API, Remote Update hufman Fuelly Web Support and Community News 6 11-26-2017 11:28 AM
Fuelly Android App - eehokie Fuelly Web Support and Community News 2 07-14-2010 09:59 PM
Humble request about ScanGauge 2 RningOnFumes Hypermiling 3 01-07-2008 06:02 PM
Electrical power and cars. DracoFelis Automotive News, Articles and Products 2 09-16-2006 02:31 PM
Honda TPS Sensors - $15/ea Matt Timion For Sale 7 06-27-2006 12:05 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 03:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.