Hondaswap.com | Honda Technical & JDM styling Forums

liquid00meth · 02-25-2003, 06:47 PM

I have been reading some things, and it was my understanding that the optimal air/fuel ratio was always 10:1. But it seems that this isn't correct at all, especially for forced induction. Comments? Wisdom?

pills_PMD · 02-25-2003, 07:03 PM

generally it seems that 13:1 at WOT gives the most power. i got taht from hondata

Calesta · 02-25-2003, 07:53 PM

Get on the dyno, figure out which ratio gives you the most power over a range of revs, then tune to match- once you have that, you can start playing with varying ratios to get the power where you want it at each rev band. My B20/VTEC made its best power around 11.5:1. Every setup is different.

chet · 02-25-2003, 07:58 PM

yes, put your car on a dyno.

12:1 vs 13:1 is usually where the most power is made...but as calesta said every setup is different...with turbo setups usually running richer to make the most power.

02-25-2003, 06:47 PM	#1
liquid00meth Senior Member Join Date: Nov 2002 Location: Laconia, NH Posts: 3,201 iTrader: 0 / 0% Rep Power: 47	I have been reading some things, and it was my understanding that the optimal air/fuel ratio was always 10:1. But it seems that this isn't correct at all, especially for forced induction. Comments? Wisdom? __________________ "Our enemies are innovative and resourceful, and so are we. They never stop thinking about new ways to harm our country and our people, and neither do we." -The thought provoking George W. Bush

02-25-2003, 07:53 PM	#3
Calesta Admin with a big stick Join Date: Sep 2002 Location: Dallas / Fort Worth, TX Age: 32 Posts: 24,525 iTrader: 0 / 0% Ride: 2003 S2000 Rep Power: 291	Get on the dyno, figure out which ratio gives you the most power over a range of revs, then tune to match- once you have that, you can start playing with varying ratios to get the power where you want it at each rev band. My B20/VTEC made its best power around 11.5:1. Every setup is different. __________________ DO NOT PM me with tech questions! Use the forums! Intercrew Auto Salon - (972) 485-8688

02-25-2003, 07:58 PM	#4
chet Senior Member Join Date: Sep 2002 Location: st petersburg, florida Posts: 888 iTrader: 0 / 0% Rep Power: 23	yes, put your car on a dyno. 12:1 vs 13:1 is usually where the most power is made...but as calesta said every setup is different...with turbo setups usually running richer to make the most power. __________________ <a href=\'http://www.geocities.com/coker_boy/honda.html\' target=\'_blank\'>The Green Machine</a>

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
air/fuel ratio gauge with single civic pod	vtecsir1	Parts: For Sale/Trade/Wanted	6	06-21-2004 12:36 AM
Automotive Formulas	pissedoffsol	Reference Materials	0	03-01-2004 07:06 AM
How to Compute the Compression Ratio of a motor	pissedoffsol	General Tech Articles	0	01-12-2004 01:41 AM
Air/fuel Ratio And Gas Mileage	mical0259	ECU's, Electronics, and Tuning	1	04-19-2003 12:18 AM
Air/fuel Ratio Gauge Install	EKDRIFTER	ECU's, Electronics, and Tuning	4	02-21-2003 11:33 AM


Welcome, Guest! Please Register or Login: User Name Password Members have access to more features, better search, and see fewer ads! It's free, what are you waiting for?

02-25-2003, 07:03 PM	#2
pills_PMD Super Moderator Join Date: Sep 2002 Location: New Albany, OH Posts: 4,262 iTrader: 0 / 0% Ride: 01 is300, 05 s2000, 03 rx300 Rep Power: 57	generally it seems that 13:1 at WOT gives the most power. i got taht from hondata

Hondaswap.com | Honda Technical & JDM styling Forums

Air/fuel Ratio