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A/F ratio gauge help? #1025164 03/22/11 09:14 PM
Joined: Aug 2003
Posts: 2,311
Rauch_Off_Road Offline OP
Forum Moderator
I'm heavily considering the installation of an AFR gauge for the 3.0.

So heres what I want to know. My goal is to tune the mixture on a new VAFM so its within spec. Can I reasonably run a short band or do I need to go to wideband? I'm not looking at getting too crazy wtih this.

Whats a good setup?


(aka suprathepeg, aka Sean)
89 v6 SWB truck "BLACK BEAUTY" EB valves, P&P head 30 over.
95 FZJ80. Lifted. locked and rollin on 33s (my dream machine)
From the Off-Road World
Re: A/F ratio gauge help? [Re: Rauch_Off_Road] #1025165 03/22/11 09:18 PM
Joined: Aug 2003
Posts: 2,854
G
Greg_Canada Offline
Roll Me Over
If you want it accurate - wideband.
If you want to make it as close to 14.7:1 as you can, go narrowband. Wont help you if you're trying to tune closed loop.

Look for an AEM UEGO wideband... usually can find for $150 bux... or check the classifieds on customtacos.com or yotatech for a good used wideband...


89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim
Re: A/F ratio gauge help? [Re: Greg_Canada] #1025166 03/23/11 04:30 AM
Joined: Apr 2002
Posts: 3,567
Snowtoy Offline
Roll Me Over
Yes, you will need a wideband A/F if you are going to use the meter to tune the engine. The non-wideband type cycle between lean and rich when at idle or when cruising, peg at rich when at heavy/full throttle, and work better as fuel economy monitor than a tuning one.


More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed

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