F@#cking SMOG

cre · 04-06-2012, 07:34 PM

Advance too much and you may cause pinging which causes the ecu to reduce timing advance significantly and add fuel.... Shouldn't happen from advanced an ignition timing increase of only 3? though. The O2 sensor also has a specific operating temperature range which must be met. As mentioned timing affects exhaust temp, but again 3? should have ZERO effect.

The only code stored was for the O2 sensor? Could have been knocking or excessive pinging. Is the mechanical timing spot on?

When you say "leaned out" are you just using the wrong term for ignition advance? Or are you using a fuel controller and adjusting the fuel for a specific AFR (for which that term is applicable)?

Remember, like I said, there's also the factor about the ECU needing a little time to learn the sensors and driving style. Also, make sure your spark plugs are in good shape and make sure there's no oil leaking in there with them.

04-06-2012, 07:34 PM	#22
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Advance too much and you may cause pinging which causes the ecu to reduce timing advance significantly and add fuel.... Shouldn't happen from advanced an ignition timing increase of only 3? though. The O2 sensor also has a specific operating temperature range which must be met. As mentioned timing affects exhaust temp, but again 3? should have ZERO effect. The only code stored was for the O2 sensor? Could have been knocking or excessive pinging. Is the mechanical timing spot on? When you say "leaned out" are you just using the wrong term for ignition advance? Or are you using a fuel controller and adjusting the fuel for a specific AFR (for which that term is applicable)? Remember, like I said, there's also the factor about the ECU needing a little time to learn the sensors and driving style. Also, make sure your spark plugs are in good shape and make sure there's no oil leaking in there with them. __________________ 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 ---> Last edited by cre; 04-06-2012 at 07:49 PM.