How to tune Apexi Safc??

cre · 03-29-2011, 12:27 AM

Ok, I have a moment more... You need a wideband in order to effectively and safely tune. If you do not have one and cannot afford one you should take your car to a TRUSTWORTHY performance shop for tuning. The system can only be tuned for open loop operation, if you want to tune the closed loop fueling you may remove the stock O2 sensor to force the ECU to remain in open loop mode, but aside from just being lazy when tuning there's no real benefit. I recommend just tuning the open loop levels unless you have a specific reason not to.

The most affordable wide band is the very reliable LC-1 by Innovate Motorsports. I've installed a number of these, tuned with them and have found them to have very little shift as the sensor ages; You'll find a number of magazine articles and owners praising this unit if you dig around.

Conga1991 · 03-29-2011, 01:44 AM

All very great information. I have to wait to get a wideband since I am currently broke.

Everything needs to be at 0, that's everything in the settings and not the etc?? would reseting it back to factory settings be the best way?

03-29-2011, 12:27 AM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Ok, I have a moment more... You need a wideband in order to effectively and safely tune. If you do not have one and cannot afford one you should take your car to a TRUSTWORTHY performance shop for tuning. The system can only be tuned for open loop operation, if you want to tune the closed loop fueling you may remove the stock O2 sensor to force the ECU to remain in open loop mode, but aside from just being lazy when tuning there's no real benefit. I recommend just tuning the open loop levels unless you have a specific reason not to. The most affordable wide band is the very reliable LC-1 by Innovate Motorsports. I've installed a number of these, tuned with them and have found them to have very little shift as the sensor ages; You'll find a number of magazine articles and owners praising this unit if you dig around. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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03-29-2011, 01:44 AM	#2
Conga1991 3" Exhaust Join Date: Jun 2009 Location: Avondale, AZ Posts: 169	All very great information. I have to wait to get a wideband since I am currently broke. Everything needs to be at 0, that's everything in the settings and not the etc?? would reseting it back to factory settings be the best way?